A parametric study of the energy performance of double-skin façades in climatic conditions of Crete, Greece

Size: px
Start display at page:

Download "A parametric study of the energy performance of double-skin façades in climatic conditions of Crete, Greece"

Transcription

1 *Corresponding author: A parametric study of the energy performance of double-skin façades in climatic conditions of Crete, Greece... Niki Papadaki, Sotiris Papantoniou and Dionysia Kolokotsa * Energy Management in the Built Environment Research Unit, Department of Environmental Engineering, Technical University of Crete, Chania GR 73100, Crete, Greece... Abstract Double-skin façades (DSF) are considered an innovative energy efficient technique that gained an increasing interest worldwide. The aim of this article is to perform a parametric study for the DSFs configuration in hot climatic conditions. The parameters under investigation are the ventilation rate, the shading requirements and the cavity dimensions. A newly erected building with surface area of m 2 is considered as the basis for the parametric study. The building is monitored and simulated using Energy Plus. The parametric analysis showed that the ventilation rate in the DSFs configuration is of a major importance especially during the cooling season. The lack of adequate ventilation increases the cooling demands and deteriorates the DSF s effectiveness. Finally, the integration of shading in the overall construction, especially the external ones, results to 24% annual energy conservation. Keywords: double-skin façades; energy efficiency; hot climatic conditions Received 24 May 2012; revised 28 September 2012; accepted 3 December INTRODUCTION Nowadays, the necessity for improvement in energy efficiency in the buildings sector is very well recognized. In this context, the European energy policies are clearly oriented toward energy management and high energy efficiency of buildings through the adoption of the 2010/31/EU directive for the nearly zero-energy buildings [1]. Therefore, the energy efficient and bioclimatic design interventions for various climatic conditions should be carefully examined in terms of performance and applicability in new and existing buildings. The various techniques proposed for warm climatic conditions give priority to the maximization of solar gains in winter and to the solar control coupled with passive cooling techniques during summer [2]. Passive cooling techniques, such as natural and night ventilation provide good air quality as well as thermal comfort, reducing the building-related sickness which is strongly related to productivity [3]. Natural ventilation is proved to be so effective, which saves up to 50% of the energy consumption for cooling in Southern Europe [4]. Night ventilation is a very important passive cooling technique as it combines a significant decrease of cooling demand and improvement of thermal comfort and indoor air quality. This implies a reduction of the cooling loads by 10 40% and a decrease of 38C for the maximum temperature during the following day [5]. Shading techniques control direct and diffuse solar radiation that enters the interior of the building; as a result, they contribute radically to the reduction of the cooling and peak loads, provide conditions of thermal comfort and reduce the chance of glare [6]. An innovative building envelope construction that became increasingly interesting in the last decades is the double-skin façade (DSF) [7]. The DSF creates a cavity of air between the two envelope skins and acts as an extra insulation layer. This technique can provide 26% reduction of the energy demand for cooling in a properly designed wall of a building in warm climate, as well as good levels of thermal, visual and acoustic comfort while providing a highly esthetic result [8, 9]. Apart from the two skins, DSF can incorporate shading devices for better efficiency, as well as openings through which the ventilation of the construction is achieved [10]. Various configurations of DSF can be found in the literature. Analysis on DSF configurations for optimal energy building efficiency with the climatic data of Italy revealed a International Journal of Low-Carbon Technologies 2014, 9, # The Author Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( by-nc/3.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com doi: /ijlct/cts078 Advance Access Publication 15 January

2 A parametric study of the energy reduction of heating and cooling loads in comparison with traditional enclosures, taking into account the optics of materials, the building energy balance as well as the fluid dynamics of the DSF construction [11]. The difference between the summer and winter period configurations was based on the shading device s tilt, resulting in minimum and maximum solar gains, respectively. A comparative investigation between a single-skin base case against the possible alternatives (clear, tinted and reflective double skin) of the DSF s physical properties, carried out for buildings in hot arid climate (Cairo), indicated an achievement of more significant energy savings than a single skin with reflective glazing [12]. The effectiveness of a building in the hot arid climate of Iran with DSF was monitored and therefore assessed both in hot and cold conditions. The temperature difference between the outer skin, the inner skin and the cavity led to a significant heating energy saving during winter, while the aim of cooling loads reduction in summer can be achieved via additional techniques such as night ventilation and incorporation of shading devices into the cavity [13]. Moreover, photovoltaic panels [14] and green façades [15] can be incorporated in a DSF contributing the aforementioned zero-energy buildings concept. The optimal design of the DSF is of vital importance, without which, the effects may be devastating. The opening of the construction can reduce the energy consumption for cooling consumption from 7 to 12%, while the position, size and color of the blinds are critical parameters that may result to 6 14% reduction of the energy consumption for cooling [16]. Maloperation of the DSF though, concerning the ventilation and the position of the shading devices, can cause catastrophic results in terms of cooling loads and indoor comfort, due to overheating problems during summer. Therefore, consideration should be paid to the mechanism of ventilation that is implemented, the direction and rhythm of air that enters the cavity in conjunction with all the aforementioned parameters [17, 18]. Based on the state of the art, DSF s performance is influenced by various parameters in different climatic conditions. The DSF performance in hot climatic conditions as well as the addition of DSF in existing buildings is still under investigation. To this end, the aim of the present work is to perform a parametric study for the performance of a DSF that can be installed in an existing building situated in Crete, Greece under hot climatic conditions. The article is structured in four following sections. A building in Chania, Crete, Greece, is selected for the parametric study due to its construction elements. The building is described in Section 2. The parametric study performed is analyzed in Section 3. The results are discussed in Section 4, whereas the conclusion is included in Section 5. 2 DESCRIPTION OF THE CASE STUDY 2.1 Building s description The building selected for the DSF parametric study is an existing but newly erected dwelling located in the Technical University of Crete Campus (see Figure 1). It is consisted of two three-story wings (S-E and N-W orientation) containing mainly offices and pc labs whilst they are connected with a central, six-story space that includes, auditoriums, canteen and an atrium. Although the building was first occupied in the beginning of 2010, its energy consumption is proved to be high. Moreover, its architectural characteristics make various conventional interventions difficult to be applied (see Figure 2). Another critical point that should be mentioned here is the fact that the shading devices are of the same type and size in both south and north orientation. Finally, there are balconies that can be served as the cavity of the proposed DSF. The total heating and cooling surface area is m 2. The building is equipped with a heating ventilation and airconditioning system managed by a Building Energy Management System. All the building s technical details are tabulated in Table Climatic conditions The weather in Crete is a temperate Mediterranean climate, characterized by mild, rainy winters and hot, dry summers. There are significant differences between the coastal zone and the mountainous areas, as well as between the west and the east part of Crete, when it comes to the weather conditions. The mountains of Crete form an East West barrier to prevailing northerly winds, and they trap the clouds sweeping down the Aegean, which may be gray and wet in the north, but sunny on the south coast where often the clouds do not extend over the sea. The coastal zone is characterized by dry summer and mild winter. The rainy season is between October and March April, while snowfalls are extremely rare in the coastal zone of Crete. Figure 1. The case study building, Building of Sciences, Technical University of Crete, Crete, Greece. International Journal of Low-Carbon Technologies 2014, 9,

3 N. Papadaki et al. Figure 2. Special architectural characteristics of the case study building (sloping walls, atrium). Table 1. Building s characteristics General information Location Chania, Crete, Greece Surface area m 2 Building operation Classrooms, auditoriums, office spaces, corridors Operation hours Full operation: 08:00 14:00 Monday Friday, Partial operation: 14:00 20:00 Monday Friday Building envelope (outside to inside layer) External walls U ¼ 0.55 W/m 2 K, (0.015 m coating, 0.3-m reinforced concrete, 0.05-m rockwool, 0.03-m double plasterboard) Internal walls U ¼ 0.48 W/m 2 K, (0.015-m plasterboard, 0.04-m air gap, m plasterboard) Windows U ¼ 3.7 W/m 2 K, (double glazing with m air gap) Floor on ground U ¼ 1.8 W/m 2 K, (0.01-m astrofoil insulation, 0.18-m reinforced concrete, m coating, 0.02-m marble) Intermediate floor U ¼ W/m 2 K, (0.015-m plasterboard, 0.5-m air gap, 0.18-m reinforced concrete, m coating, 0.01-m ceramic tile) Roof U ¼ 0.35 W/m 2 K, (0.015-m coating, 0.08-m reinforced concrete, 0.08-m expanded polystyrene, m asphaltic sheets, 0.1-m lightweight concrete, 0.18-m reinforced concrete) Building systems Cooling heating system All air, VRV: 878 kw, FCUs: 306 kw Hot water Boilers: 36 kw (supply: solar collectors) Electrical loads Fluorescent lamps: 217 kw 2.3 Energy performance of the case study building The building s energy performance is evaluated though: (1) The implementation of a detailed energy audit. The various energy components (heating, cooling, lighting and equipment) are carefully monitored. (2) Monitoring of the indoor temperature and humidity in various zones. (3) Advanced simulation techniques. The detailed energy audit for the whole building showed that the energy consumption of the building is high as tabulated in Table 2. The simulation of the building is performed using Energy Plus, a process rather complicated since many difficulties may arise [19]. For simplification, the east wing of the building is simulated because it has the same size and construction characteristics of the west wing. The results analyzed are referred to the east wing of the building. Each floor of the wing is Table 2. Building s total energy consumption Building use Lights 22.4 PCs 4.6 Printers 0.02 Heating system 17 Cooling system 54 Total 98 Annual energy consumption (KWh/m 2 ) separated into three thermal zones, as depicted in Figure 3a. The 3D geometry of the building (Figure 3b) is performed through the Energy Plus plugin of Google SketchUp. To develop a valid simulation model of the building, the description as well as climatic data are needed. Therefore, apart from the geometry of the building that included the thermal zones, material and surface construction elements, the following groups of data are also imported: simulation parameters, 298 International Journal of Low-Carbon Technologies 2014, 9,

4 A parametric study of the energy Figure 3. (a) Separation of building into thermal zones, (floor plan); (b) 3D model of the case study building. Figure 4. Energy consumption for heating and cooling. location and climate, schedules, internal gains as well as zone airflow. Furthermore, two weather data files for the location of Chania are used. The first one is extracted from the global meteorological database, Meteonorm [20], whereas the second one from a meteorological mast installed in the Technical University of Crete campus ( chania/). The energy performance per floor area is extracted by the simulation model where it can be seen that as expected, during the summer period, the energy demand for cooling is significant for the upper floor areas and for the south façade (see Figure 4). The opposite is noticed during the winter periods where the south façades that are exposed to daylight require less energy for heating. Moreover, the building s indoor environmental parameters are monitored for at least 2 months to validate the model s reliability. Indoor temperature and humidity sensors (data loggers) are positioned on the ground, first and second floor zones. The extracted data are compared with the data obtained from the model, both for the corresponding thermal zone and for the respective time period climatic conditions, (see Figure 5), showing satisfactory convergence. This makes the model reliable and suitable to represent accurately the actual behavior of the building. 3 PARAMETRIC STUDY OF THE DSF Based on the energy performance analysis of the previous section, a DSF is selected for the improvement of the building s energy efficiency due to the following reasons: The building is recently built, and there is no possibility to increase insulation due to the envelope s architectural design. Most of the roof area of the building is either occupied by the electromechanical equipment or is covered by roof lights leaving little space for roof interventions. The building suffers from overheating during the summer period and this fact can be attributed to the equal distribution of openings among the various façades. The incorporation of DSF can support the further installation of photovoltaic panels. For this purpose, a parametric study is performed versus the energy efficiency achieved and the indoor comfort. The parametric study included the following: Test of the DSF performance versus the required ventilation rate. International Journal of Low-Carbon Technologies 2014, 9,

5 N. Papadaki et al. Figure 5. Validation procedure, south zone-ground floor. Figure 6. Double-skin façade construction. Test of the DSF performance based on the shading configuration. Test of the DSF performance based on the cavity dimensions. Finally, a single shading device was also tested for comparison purposes. 3.1 The DSF performance versus the ventilation rate For the analysis of the performance of a DSF versus the ventilation rate, a DSF is added on the south façade of the building, as shown in Figure 6. Double glazing is installed as the outer skin, creating an air cavity width 1 m, for the first and second floor, while the cavity width of the ground floor is m due to constructional limitations. This DSF configuration comprises a corridor-type double façade partitioned per story and provides the possibility to walk in the cavity space [10] DSF with low ventilation rate During the first approach, the ventilation rate is initially low. The openings of the outer and inner panes remain closed for whole year. As a result, the ventilation mode is a buffer zone type, meaning that the air that enters the cavity is mainly due to infiltration [10]. In this airflow pattern, the cavity benefits of the solar gains and transfers the absorbed heat by conduction in the main building. In the case of open outer skin and low ventilation rate, overheating phenomena are observed. The 300 International Journal of Low-Carbon Technologies 2014, 9,

6 A parametric study of the energy low rate of ventilation proved to be effective mainly for the winter season. Specifically, during the winter (December, January and February) the mean indoor temperature increased by 0.3, 1.1 and 0.68C at the ground floor, first and second floor, respectively. During the summer, the ground and second floor showed no temperature change, whereas on the first floor appeared a temperature increase by 0.98C (Table 3) DSF with high ventilation rate An alternative DSF scenario is examined, except that the airflow is outdoor air curtain type, more precisely, outdoor air is introduced into the gap and then exits from the outer skin of the DSF, since in this case, the openings of the outer skin are active [10]. In this scenario, airflow of six air changes per hour (ach) enters the cavity, 24-h/day throughout the year, from the open window panes of the outer skin element. The other design parameters (size and type double-skin construction) remain the same as in low ventilation rate configuration. It is apparent that this scenario and, in particular, this mode of ventilation are very effective for the summer period, causing a temperature decrease of 0.7, 0.3 and 18C on the ground, first and second floor, respectively, whereas during the winter months, a slight temperature decrease of 0.5 and 0.48C on the ground floor and second floor, respectively, is noticed. The success of this configuration is based on the high ventilation rate that cools the hot summer air, which enters the cavity, thus avoiding heat transfer into the building. As a result, the reduction of the energy consumption for cooling is up to 5.5% while a small increase of 0.7% for the heating requirements is noticed. Therefore, the DSF with increased ventilation results to 4.5% energy efficiency (Table 3). 3.2 The DSF performance versus the shading configuration DSF with internal shading system In this section, the DSF s performance versus an internal shading system using venetian blinds is studied (Figure 7a). The louvers are designed to be maintained in horizontal position during winter period, so as to allow the penetration of solar radiation in the cavity of the DSF and to the main building. During summer, the blinds are kept with 458 tilt angle from the horizontal, in order to prevent, on the one hand, the direct penetration of the solar radiation and, on the other hand, to ensure the appropriate levels of visual comfort. The DSF type tested in this case is the outdoor air curtain type since it is proved the most effective solution in the previous section. The internal shading configuration decreases the indoor temperature during summer period, by 2, 2.2 and 3.18C in thermal zones of the ground, 1st and 2nd floor respectively. The high rate of ventilation combined with the internal shading system resulted to almost 16% energy efficiency (Table 4) DSF with external shading system The DSF configuration with an external shading system is investigated. As depicted in Figure 7b the shading devices are Table 3. Energy efficiency with the alternative scenarios of ventilation rate for the east wing of the building Status quo After the proposed scenarios Energy efficiency Annual energy consumption (kwh) Annual energy consumption (kwh) Energy efficiency (kwh) Energy efficiency (%) Low ventilation rate (buffer zone type) Heating Cooling Total final consumption High ventilation rate (outdoor air curtain type) Heating Cooling Total final consumption Figure 7. (a) Scenario 4: DSF with interior shading system, (b) Scenario 5: DSF with exterior shading system. International Journal of Low-Carbon Technologies 2014, 9,

7 N. Papadaki et al. kept horizontal during winter and have a 458 angle during summer, while a high ventilation rate is considered. The indoor temperature in this case, is characterized by the maximum reduction during summer with a consequent reduction for the cooling demand. The indoor temperature decrease versus the status quo is 3, 3.9 and 58C during summer period, in the thermal zones of the ground, 1st and 2nd floor respectively. The annual energy efficiency of kwh leads to a reduction of almost 20% versus the status quo. A small increase of the heating demands is attributed to the increased ventilation rate during winter. The temperature drop in the zones is significantly larger than the ones with the internal shading system, showing the effectiveness of external shading in hot Mediterranean conditions. 3.3 The DSF performance versus the cavity dimensions In the present section various cavity dimensions are analyzed versus the energy efficiency achieved under the specific climatic conditions. It is observed that the highest cavity width the most effective is in reducing the cooling loads, coupled with varying ventilation rate and shading devices (see Table 5). More specifically, a wide cavity with increased air volume, allows significant pre-cooling of the air before it is supplied into the building, leading increased benefits in the reduction of the cooling demand. On the contrary, the smallest the cavity, the lowest are the heat losses because of less air volume, leading to more notable energy efficiency for heating. 4 DISCUSSION The conservation and rational use of energy in the building sector is nowadays of crucial importance, therefore suitable innovative technologies should be considered. Significant research is performed the latest period for the building façades configuration where the DSFs have attracted numerous research efforts. In the previous sections a parametric analysis is performed for the basic parameters that may influence DSFs effectiveness in hot climatic conditions since they can be applied to existing buildings with balconies in the tertiary sector which are very common in the Mediterranean area. Therefore a case study is selected in Crete, Greece in order to analyze the DSF s performance. As mentioned in the previous section the ventilation rate in the DSF cavity proved to be one of the most crucial parameters in the cooling load reduction while the low ventilation rate configuration is suitable during winter. A combined outdoor air curtain with buffer zone DSF configuration is therefore the optimum solution for hot climatic conditions (Table 6). Furthermore the increased ventilation rate in conjunction with external shading achieved almost 24% total energy Table 4. Energy efficiency with the alternative scenarios of shading system for the east wing of the building Status quo After the proposed scenarios Energy efficiency Annual energy consumption (kwh) Annual energy consumption (kwh) Energy efficiency (kwh) Energy efficiency (%) Interior shading system Heating Cooling Total final consumption Exterior shading system Heating Cooling Total final consumption Table 5. Cavity impact on heating and cooling consumptions of alternate DSF scenarios, east wing of building Energy consumption for heating Energy consumption for cooling m DSF cavity, ground floor 1-m DSF cavity, first floor 1-m DSF cavity, second floor m DSF cavity, ground floor 1-m DSF cavity, first floor 1-m DSF cavity, second floor Status quo (kwh) Energy efficiency for low ventilation rate scenario (%) Energy efficiency for high ventilation rate scenario (%) Energy efficiency for internal shading device scenario (%) Energy efficiency for external shading device scenario (%) International Journal of Low-Carbon Technologies 2014, 9,

8 A parametric study of the energy Table 6. Energy efficiency and CO 2 emissions reduction with the alternative scenarios Status quo After the proposed scenarios Energy efficiency CO 2 emissions reduction Annual energy consumption (kwh) CO 2 emissions (tn) Annual energy consumption (kwh) CO 2 emissions (tn) Energy efficiency (kwh) Energy efficiency (%) Emissions reduction (tn) External blinds % 27 DSF with low % 21.5 ventilation rate DSF with high % 9.8 ventilation rate DSF with interior % 35.2 shading system DSF with exterior shading system % 53 Table 7. Energy efficiency with the alternative scenarios of shading system, east wing of building Status quo After the proposed scenarios Energy efficiency Annual energy consumption (kwh) Annual energy consumption (kwh) Energy efficiency (kwh) Energy efficiency (%) External blinds Heating Cooling Total final consumption efficiency on a yearly basis and proved to be the most effective solution for the specific building and climatic conditions. The DSF configuration is also compared with simple outdoor shading devices that can be added on the southern façade and it s the most common solution for the hot climatic conditions [21, 22]. For that purpose the case of fixed, horizontal, 0.2 m wide external blinds, implemented in the glazing of the south façade of the building are considered. The energy consumption of the building is reduced versus the status quo, since the solar radiation penetration is minimized during summer. The indoor temperature decrease achieved by the outdoor shading is almost 4.58C leading to a 13.7% of energy efficiency comparing with the status quo. The higher efficiency of both DSF and single shading is observed in the 2nd floor since it is characterized by the largest area of glazing in relation to other floors (Table 7). During winter months, the outdoor air is preheated in the DSF cavity, before entering into the main building leading to reduced thermal loads in winter and an indoor temperature increase. The reduced speed of the air flow and the increased temperature of the air inside the cavity, lowers the heat transfer rate on the surface of the glass which leads to reduction of heat losses and a slight increase of indoor temperature [23]. This fact explains the optimal energy profile of the tested DSF configuration low ventilation rate of during winter. Respectively during summer, when the air is extracted from apertures, better levels of temperature could be achieved and overheating phenomena could be prevented. As radiation from absorbed radiation is emitted into the intermediate cavity, a natural stack effect results, which causes the air to rise, taking with it additional heat [23]. Based on this fact, the high ventilation rate on the tested DSF configuration indeed operates optimally during summer, achieving indoor temperature decrease as well as cooling loads. In addition to that, a more significant indoor temperature reduction and cooling loads were achieved when the DSF configuration incorporated a shading device compared with the one without it, when significant solar gains exist [24]. This fact explains sufficiently the temperature decrease on the DSF configuration, which include shading devices. By comparing all the configurations studied in the present work, the optimum solution on a yearly basis is a combination of curtain type during summer that operates as a buffer zone during winter with external shading devices. This combined configuration can improve the effectiveness of ventilation rate to 6% by reducing the negative impact during winter. Finally, DSF in the hot climatic conditions is not considered a viable and competitive solution if it is not combined with an intelligent shading system that will allow the daylight penetration without compromising thermal comfort. 5 CONCLUSIONS The present study examined the influence of ventilation rate, cavity dimensions and shading on the effectiveness of DSFs as well as the contribution of the DSF technology on the energy conservation for the building sector under hot climatic conditions. International Journal of Low-Carbon Technologies 2014, 9,

9 N. Papadaki et al. The analysis showed that DSF is a quite promising solution when it is combined with suitable shading devices in terms of energy efficiency for heating and cooling and indoor thermal comfort conditions. It remains now to future, more detailed investigations, to prove or debunk the ability of DSF combined with smart shading to contribute to energy efficiency for lighting without compromising visual comfort. REFERENCES [1] EPBD. Energy Performance Building Directive Directive 2010/..../EU of the European Parliament and of the Council of on the Energy Performance of Buildings (recast), eu/pdf/en/10/st05/st05386-ad01.en10.pdf (29 September 2011, date last accessed). [2] Tzikopoulos AF, Karatza MC, Paravantis JA. Modeling energy efficiency of bioclimatic buildings. Energ Buildings 2005;37: [3] Seppanen OA, Fisk WJ. Summary of human responses to ventilation. Indoor Air 2004;14: [4] Ghiaus C, Allard F. Potential for free-cooling by ventilation. Sol Energy 2006;80: [5] Santamouris M, Sfakianaki A, Pavlou K. On the efficiency of night ventilation techniques applied to residential buildings. Energ Buildings 2010;42: [6] Axarli KN. General Principles of Bioclimatic Design. Laboratory of Building Construction and Building Physics. Department of Civil Engineering, Aristotle University, [7] Alzoubi HH, Al-Zoubi AH. Assessment of building façade performance in terms of daylighting and the associated energy consumption in architectural spaces: vertical and horizontal shading devices for southern exposure façades. Energ Convers Manage 2010;51: [8] Chan ALS, Chow TT, Fong KF, et al. Investigation on energy performance of double skin façade in Hong Kong. Energ Buildings 2009;41: [9] Streicher W, Heimrath R, Hengsberger H, et al. On the typology, costs, energy performance, environmental quality and operational characteristics of double skin façades in European buildings. Adv Building Energy Res 2007;1:1 28. [10] Streicher W, Heimrath R, Hengsberger H, et al. State of the Art of Double Skin Facades in Europe: The results of WP1 of the BESTFAÇADE Project. AIVC 27th Conference - Lyon, France, November [11] Baldinelli G. Double skin façades for warm climate regions: Analysis of a solution with an integrated movable shading system. Build Environ 2009;44: [12] Hamza N. Double versus single skin façades in hot arid areas. Build Environ 2008;40: [13] Hashemi N, Fayaz R, Sarshar M. Thermal behaviour of a ventilated double skin façade in hot arid climate. Energ Buildings 2010;42: [14] Zogou O, Stapountzis H. Flow and heat transfer inside a PV/T collector for building application. Appl Energ 2012;91: [15] Pérez G, Rincón L, Vila A, et al. Green vertical systems for buildings as passive systems for energy savings. Appl Energ 2011;88: [16] Gratia E, De Herde A. The most efficient position of shading devices in a double-skin façade. Energ Buildings 2007;39: [17] Gratia E, De Herde A. Optimal operation of a south double-skin façade. Energ Buildings 2004;36: [18] Gratia E, De Herde A. Guidelines for improving natural daytime ventilation in an office building with a double-skin façade. Sol Energy 2007;81: [19] Kim D-W, Park C-S. Difficulties and limitations in performance simulation of a double skin façade with EnergyPlus. Energ Buildings 2011;43: [20] Global Meteorological Database for Engineers, Planners and Education Version 6.1 Meteonorm. (11 September 2011, date last accessed). [21] Palmero-Marrero AI, Oliveira AC. Effect of louver shading devices on building energy requirements. Appl Energ 2010;87: [22] Tzempelikos A, Athienitis AK. The impact of shading design and control on building cooling and lighting demand. Sol Energy 2007;81: [23] Poirazis H. Double Skin Façades for Office Buildings Literature Review. Division of Energy and Building Design, Department of Construction and Architecture, Lund Institute of Technology, Lund University, [24] Gratia E, De Herde A. Natural cooling strategies efficiency in an office building with a double-skin façade. Energ Buildings 2004;36: International Journal of Low-Carbon Technologies 2014, 9,

Modelling Analysis of Thermal Performance of Internal Shading Devices for a Commercial Atrium Building in Tropical Climates

Modelling Analysis of Thermal Performance of Internal Shading Devices for a Commercial Atrium Building in Tropical Climates Modelling Analysis of Thermal Performance of Internal Shading Devices for a Commercial Atrium Building in Tropical Climates Kittitach Pichatwatana, and Fan Wang Abstract This paper examines the TAS computer

More information

A state of art for using Double skin façade in hot climate

A state of art for using Double skin façade in hot climate 2015 4th International Conference on Environmental, Energy and Biotechnology Volume 85 of IPCBEE (2015) DOI:10.7763/IPCBEE. 2015. V85. 10 A state of art for using Double skin façade in hot climate Soad

More information

GREEN AND COOL ROOFS URBAN HEAT ISLAND MITIGATION POTENTIAL IN EUROPEAN CLIMATES FOR OFFICE BUILDINGS UNDER FREE FLOATING CONDITIONS

GREEN AND COOL ROOFS URBAN HEAT ISLAND MITIGATION POTENTIAL IN EUROPEAN CLIMATES FOR OFFICE BUILDINGS UNDER FREE FLOATING CONDITIONS GREEN AND COOL ROOFS URBAN HEAT ISLAND MITIGATION POTENTIAL IN EUROPEAN CLIMATES FOR OFFICE BUILDINGS UNDER FREE FLOATING CONDITIONS Dionysia Kolokotsa 1, Mattheos Santamouris 2 1 University of Athens,

More information

Building Technology Research in Architectural Practice: Lessons Learned from Implementations of Energy-Efficient Advanced Building Technologies

Building Technology Research in Architectural Practice: Lessons Learned from Implementations of Energy-Efficient Advanced Building Technologies Building Technology Research in Architectural Practice: Lessons Learned from Implementations of Energy-Efficient Advanced Building Technologies Ajla Aksamija and Abul Abdullah, Perkins+Will ABSTRACT This

More information

Design and retrofitting of a hybrid building in Athens

Design and retrofitting of a hybrid building in Athens International Conference Passive and Low Energy Cooling 597 Design and retrofitting of a hybrid building in Athens A. Gavalas Gavalas Architects, Athens ABSTRACT This paper s aim is to present a building

More information

Chapter 7. Passive Solar Contents

Chapter 7. Passive Solar Contents Chapter 7. Passive Solar Contents 7.1 Introduction 7.2 Types of Passive Solar Systems 7.3 Advantages and Disadvantages 7.4 General Design Principles 7.5 Design Information for Direct System 7.6 Design

More information

BUILDING DESIGN AND THERMAL INERTIA: WHEN, WHY, WHERE

BUILDING DESIGN AND THERMAL INERTIA: WHEN, WHY, WHERE Int. Journal for Housing Science, Vol.34, No.4 pp. 221-231, 2010 Published in the United States BUILDING DESIGN AND THERMAL INERTIA: WHEN, WHY, WHERE R. Albatici, S. Penasa Department of Civil and Environmental

More information

Chapter 2 Literature Review

Chapter 2 Literature Review Chapter 2 Literature Review The double façade system was first introduced in France in the early 1930s. During this time, Le Corbusier (1887-1965) designed a multiple glass layer wall called Mur Neutralisant,

More information

The Elithis Tower is an experimental and demonstration. Elithis Tower in Dijon, France. nzeb case studies

The Elithis Tower is an experimental and demonstration. Elithis Tower in Dijon, France. nzeb case studies COM Elithis Tower in Dijon, France Elithis Tower, located in Dijon, France, provides strong evidence that net zero energy office buildings are achievable in near future. The building, which was designed

More information

Nocturnal natural ventilation for low and zero energy office buildings in Central Chile

Nocturnal natural ventilation for low and zero energy office buildings in Central Chile SET2009-8 th International Conference on Sustainable Energy Technologies,.Aachen, Germany. August 31 st to 3 rd September 2009 Page 1 of 6 Nocturnal natural ventilation for low and zero energy office buildings

More information

Monitoring of Advanced Facades and Environmental Systems

Monitoring of Advanced Facades and Environmental Systems Paper presented at The whole-life performance of facades University of Bath, CWCT, 18/19 April 2001, Bath, UK Monitoring of Advanced Facades and Environmental Systems Mikkel Kragh, PhD Permasteelisa Architectural

More information

Aalborg Universitet. CLIMA proceedings of the 12th REHVA World Congress Heiselberg, Per Kvols. Publication date: 2016

Aalborg Universitet. CLIMA proceedings of the 12th REHVA World Congress Heiselberg, Per Kvols. Publication date: 2016 Aalborg Universitet CLIMA 2016 - proceedings of the 12th REHVA World Congress Heiselberg, Per Kvols Publication date: 2016 Document Version Publisher's PDF, also known as Version of record Link to publication

More information

S. LONGO. The paper shows analysis of the impact on thermal comfort of natural ventilation in a nonresidential Mediterranean case-study.

S. LONGO. The paper shows analysis of the impact on thermal comfort of natural ventilation in a nonresidential Mediterranean case-study. Natural ventilative cooling in school buildings in Sicily M. CELLURA maurizio.cellura@unipa.it F. GUARINO guarino@dream.unipa.it S. LONGO sonia.longo@unipa.it M. MISTRETTA University of Reggio Calabria

More information

Assessing the energy performance of modern glass facade systems

Assessing the energy performance of modern glass facade systems Assessing the energy performance of modern glass facade systems Abdelsalam Aldawoud * Architectural Engineering Department, University of Sharjah Sharjah, United Arab Emirates Abstract. The design and

More information

Aalborg Universitet Investigation of Different Configurations of a Ventilated Window to Optimize Both Energy Efficiency and Thermal Comfort

Aalborg Universitet Investigation of Different Configurations of a Ventilated Window to Optimize Both Energy Efficiency and Thermal Comfort Aalborg Universitet Investigation of Different Configurations of a Ventilated Window to Optimize Both Energy Efficiency and Thermal Comfort Liu, Mingzhe; Heiselberg, Per Kvols; Larsen, Olena Kalyanova;

More information

171: An urban office designed for the southern Brazilian climate

171: An urban office designed for the southern Brazilian climate 171: An urban office designed for the southern Brazilian climate Marianne Costella Elemento 5 Bioclimatic Architecture, Brazil marianne@elemento5.com Abstract The climate in southern Brazil is characterised

More information

TREES Training for Renovated Energy Efficient Social housing. Section 1 Techniques 1.2 Replacement of glazing

TREES Training for Renovated Energy Efficient Social housing. Section 1 Techniques 1.2 Replacement of glazing TREES Training for Renovated Energy Efficient Social housing Intelligent Energy -Europe programme, contract n EIE/05/110/SI2.420021 Section 1 Techniques 1.2 Replacement of glazing Bruno PEUPORTIER ARMINES

More information

ENERGETIC MONITORING AND OPTIMIZATION OF A SOLAR HOUSE

ENERGETIC MONITORING AND OPTIMIZATION OF A SOLAR HOUSE Bulletin of the Transilvania University of Braşov Vol. 3 (52) - 2010 Series I: Engineering Sciences ENERGETIC MONITORING AND OPTIMIZATION OF A SOLAR HOUSE M. MOLDOVAN 1 I. VIŞA 1 A. DUŢĂ 1 Abstract: Into

More information

A Case Study on the Daylighting and Thermal Effects of Fixed and Motorized Light Louvers

A Case Study on the Daylighting and Thermal Effects of Fixed and Motorized Light Louvers A Case Study on the Daylighting and Thermal Effects of Fixed and Motorized Light Louvers Yuxiang Chen 1, Samson Yip 1, Andreas Athienitis 1 1 Building, Civil and Environmental Engineering, Concordia University,

More information

STEADY STATE AND DYNAMIC THERMOPHYSICAL PARAMETERS OF TRANSPARENT BUILDING COMPONENTS

STEADY STATE AND DYNAMIC THERMOPHYSICAL PARAMETERS OF TRANSPARENT BUILDING COMPONENTS STEADY STATE AND DYNAMIC THERMOPHYSICAL PARAMETERS OF TRANSPARENT BUILDING COMPONENTS 1. ABSTRACT In modern architecture the buildings are often designed with large glass facades or windows. Due to these

More information

Introduction to basics of energy efficient building design

Introduction to basics of energy efficient building design Introduction to basics of energy efficient building design Pierre Jaboyedoff Seminar on Energy Efficient & Thermally Comfortable Buildings in Amravati For CRDA, Andhra Pradesh May 2 nd 2017 Indo-Swiss

More information

Using passive solutions to improve thermal summer comfort in timber framed houses in South-west France

Using passive solutions to improve thermal summer comfort in timber framed houses in South-west France Using passive solutions to improve thermal summer comfort in timber framed houses in South-west France Sylvain Boulet 1, Stéphanie Armand-Decker 2, FCBA Technological Institute I2M-TREFLE laboratory -

More information

Analysis of different shading strategies on energy demand and operating cost of office building

Analysis of different shading strategies on energy demand and operating cost of office building Analysis of different shading strategies on energy demand and operating cost of office building Kwiatkowski, J 1,2 ; Rucińska, J 1,2 ; Panek, A 1,2 1 Warsaw University of Technology, Faculty of Environmental

More information

Facade Design for Super High- Rise Building in Subtropic Region in China

Facade Design for Super High- Rise Building in Subtropic Region in China Facade Design for Super High- Rise Building in Subtropic Region in China Super high-rise building will always be iconic elements at any location. Accompanied by the growth of building technology and urbanization,

More information

Reducing energy demand in non-domestic buildings: integrating smart facades, ventilation, and surface heating and cooling

Reducing energy demand in non-domestic buildings: integrating smart facades, ventilation, and surface heating and cooling Reducing energy demand in non-domestic buildings: integrating smart facades, ventilation, and surface heating and cooling Phil Jones, Shan Shan Hou and XiaoJun Li Welsh School of Architecture, Cardiff

More information

ENERGY PERFORMANCE OF DIFFERENT TYPES OF DOUBLE SKIN FACADES IN VARIOUS CLIMATES

ENERGY PERFORMANCE OF DIFFERENT TYPES OF DOUBLE SKIN FACADES IN VARIOUS CLIMATES ENERGY PERFORMANCE OF DIFFERENT TYPES OF DOUBLE SKIN FACADES IN VARIOUS CLIMATES Ajla Aksamija, PhD, LEED AP BD+C, CDT1 1Department of Architecture, University Of Massachusetts Amherst, Amherst, Massachusetts

More information

The feasibility of natural ventilation in plus energy houses in Germany

The feasibility of natural ventilation in plus energy houses in Germany Proceedings of 4th Masters Conference: People and Buildings London Metropolitan University, Sir John Cass Faculty of Art, Architecture and Design, London, UK, 19th September 2014. Network for Comfort and

More information

Enhancing visual comfort in classrooms through daylight utilization

Enhancing visual comfort in classrooms through daylight utilization Enhancing visual comfort in classrooms through daylight utilization Kleo Axarli and Katerina Tsikaloudaki Laboratory of Building Construction & Physics, Aristotle University of Thessaloniki, Greece Corresponding

More information

Thermal Comfort Measurements in a Hybrid Ventilated Office Room

Thermal Comfort Measurements in a Hybrid Ventilated Office Room Eawag 5237 Thermal Comfort Measurements in a Hybrid Ventilated Office Room Thomas Frank 1), Herbert Güttinger 2) and Stefan van Velsen 3) 1 Swiss Federal Laboratories for Materials Testing and Research

More information

BUILDING INTEGRATED VENTILATION SYSTEMS MODELLING AND DESIGN CHALLENGES

BUILDING INTEGRATED VENTILATION SYSTEMS MODELLING AND DESIGN CHALLENGES BUILDING INTEGRATED VENTILATION SYSTEMS MODELLING AND DESIGN CHALLENGES P. Heiselberg Ph.D. 1 ABSTRACT Today, attention has turned towards optimal use of sustainable technologies like natural ventilation.

More information

ENERGY EFFICIENT TECHNIQUES AND SIMULATION OF ENERGY CONSUMPTION FOR THE SHANGHAI ECOLOGICAL BUILDING

ENERGY EFFICIENT TECHNIQUES AND SIMULATION OF ENERGY CONSUMPTION FOR THE SHANGHAI ECOLOGICAL BUILDING 01-155 The 2005 World Sustainable Building Conference, ENERGY EFFICIENT TECHNIQUES AND SIMULATION OF ENERGY CONSUMPTION FOR THE SHANGHAI ECOLOGICAL BUILDING BU Zhen M.Sc 1 LU Shanhou Ph.D 2 ZHU Weifeng

More information

AM-55, AM-56) B U I L D I N G P A R T N E R S H I P S F O R E N E R G Y S E C U R I T Y

AM-55, AM-56) B U I L D I N G P A R T N E R S H I P S F O R E N E R G Y S E C U R I T Y Nearly zero-energy building and components of the DIRECTIVE on energy performance of buildings 2010/31/EU Albin Zsebik, PhD, CEM Improving university curricula in the areas of a) energy efficiency in the

More information

ADVANCED FAÇADES AND HVAC SYSTEMS: PRELIMINARY RESULTS OF FULL-SCALE MONITORING

ADVANCED FAÇADES AND HVAC SYSTEMS: PRELIMINARY RESULTS OF FULL-SCALE MONITORING ADVANCED FAÇADES AND HVAC SYSTEMS: PRELIMINARY RESULTS OF FULL-SCALE MONITORING M. Kragh, M. Colombari and M. Zobec Permasteelisa Group, Research & Engineering, 31020 San Vendemiano (TV), Italy www.permasteelisa.com,

More information

Double layer glass façade in the refurbishment and architectural renewal of existing buildings in Italy

Double layer glass façade in the refurbishment and architectural renewal of existing buildings in Italy Double layer glass façade in the refurbishment and architectural renewal of existing buildings in Italy Silvia Brunoro 1*, Andrea Rinaldi 2 1 University of Ferrara, Department of Architecture, Architettura>Energia

More information

SOLAR PHOTOVOLTAIC ENERGY

SOLAR PHOTOVOLTAIC ENERGY SOLAR PHOTOVOLTAIC ENERGY THE PHOTOVOLTAIC TECHNOLOGY PRODUCES CLEAN ELECTRICITY FROM SOLAR ENERGY 126 m 2 of photovoltaic modules are installed that generate about 12,000 kwh electricity per year, equivalent

More information

Thermal and Energy Performance of Double Skin Facades in Different Climate Types

Thermal and Energy Performance of Double Skin Facades in Different Climate Types University of Massachusetts Amherst From the SelectedWorks of Ajla Aksamija 2017 Thermal and Energy Performance of Double Skin Facades in Different Climate Types Dr. Ajla Aksamija, University of Mass Available

More information

An enhancement of the daylighting from side-window using two-section venetian blind

An enhancement of the daylighting from side-window using two-section venetian blind An enhancement of the daylighting from side-window using two-section venetian blind Vichuda Mettanant 1,2, Pipat Chaiwiwatworakul 1,2,*, Pattana Rakkwamsuk 3 1 The Joint Graduate School of Energy and Environment,

More information

546: High Altitude Design, Optimising Residential Architecture in the Alborz Mountains, Iran

546: High Altitude Design, Optimising Residential Architecture in the Alborz Mountains, Iran 546: High Altitude Design, Optimising Residential Architecture in the Alborz Mountains, Iran Yasamin Arbabi Architectural Association, Graduate School Abstract Darbandsar is a village located in the Alborz

More information

CCHVAC REHVA Workshop in CLIMA nzeb experiences in South Europe and Mediterranean Climate

CCHVAC REHVA Workshop in CLIMA nzeb experiences in South Europe and Mediterranean Climate CCHVAC REHVA Workshop in CLIMA 2019 nzeb experiences in South Europe and Mediterranean Climate Stefano P. Corgnati Aalborg - 2016 Mediterranean climate North Europe South Europe - Control of thermal loads

More information

SKYLIGHT DESIGN PERFORMANCE EVALUATION METHOD DEVELOPMENT WITH THERMAL AND DAYLIGHT SIMULATION

SKYLIGHT DESIGN PERFORMANCE EVALUATION METHOD DEVELOPMENT WITH THERMAL AND DAYLIGHT SIMULATION SKYLIGHT DESIGN PERFORMANCE EVALUATION METHOD DEVELOPMENT WITH THERMAL AND DAYLIGHT SIMULATION Xianou Li, Frederick Wong, and Yihan Li Arup International Consultants (Shanghai) Co Ltd ABSTRACT This paper

More information

Buildings with large glazed surfaces: optimization of solar control strategies in relation to the building's thermal inertia

Buildings with large glazed surfaces: optimization of solar control strategies in relation to the building's thermal inertia Buildings with large glazed surfaces: optimization of solar control strategies in relation to the building's thermal inertia Antonio Carbonari 1 1 Department of Design and Planning in Complex Environments,

More information

Effects of Fixed and Motorized Window Louvers on the Daylighting and Thermal Performance of Open-Plan Office Buildings

Effects of Fixed and Motorized Window Louvers on the Daylighting and Thermal Performance of Open-Plan Office Buildings Purdue University Purdue e-pubs International High Performance Buildings Conference School of Mechanical Engineering 214 Effects of Fixed and Motorized Window Louvers on the Daylighting and Thermal Performance

More information

What is Sustainable Design?

What is Sustainable Design? What is Sustainable Design? Part Three: The Basic Principles of Passive Design Terri Meyer Boake BES, BArch, MArch, LEED AP Associate Director School of Architecture University of Waterloo Past President

More information

Evaluating the Building Performance of the Center for Promotion of Science in Block 39 in Belgrade, Serbia

Evaluating the Building Performance of the Center for Promotion of Science in Block 39 in Belgrade, Serbia Evaluating the Building Performance of the Center for Promotion of Science in Block 39 in Belgrade, Serbia Berrak Balci Abstract This paper presents the evaluation of the building performance of the previously

More information

Intelligent tall building envelope technologies and design alternatives for comfort and energy efficiency in hot, arid climate

Intelligent tall building envelope technologies and design alternatives for comfort and energy efficiency in hot, arid climate Intelligent tall building envelope technologies and design alternatives for comfort and energy efficiency in hot, arid climate Sameh Monna, Building Environment Science & Technology Department, Polytechnic

More information

Responsive Building Elements Actual Development and Trends Within IEA

Responsive Building Elements Actual Development and Trends Within IEA Responsive Building Elements Actual Development and Trends Within IEA Dipartimento di Energetica, Politecnico di Torino Torino (Italy( Italy) e_mail: marco.perino@polito.it Research and technological innovation,

More information

Energy consumption and thermal comfort in a passive house built in Romania

Energy consumption and thermal comfort in a passive house built in Romania Chapter 3 - High Performance Sustainable Building Solutions Energy consumption and thermal comfort in a passive house built in Romania Cristina Tanasa, Cristian Sabau, Daniel Dan & Valeriu Stoian Polytechnic

More information

Interventions for Ensuring Thermal Comfort Equality in Apartment Buildings

Interventions for Ensuring Thermal Comfort Equality in Apartment Buildings European Journal of Sustainable Development (2017), 6, 3, 40-50 ISSN: 2239-5938 Doi: 10.14207/ejsd.2017.v6n3p40 Interventions for Ensuring Thermal Comfort Equality in Apartment Buildings By Nese Dikmen

More information

The Double Glass Skin Façade: a sustainable option for the Curtain Wall in Mediterranean Climate Countries?

The Double Glass Skin Façade: a sustainable option for the Curtain Wall in Mediterranean Climate Countries? 1 The Double Glass Skin Façade: a sustainable option for the Curtain Wall in Mediterranean Climate Countries? Pere Alavedra¹, Mauricio Torres², Amado Guzmán³, Samantha Gallowayº, Daniel Alavedra" Department

More information

Sustainable Building Façade and Advanced Fenestration Systems

Sustainable Building Façade and Advanced Fenestration Systems Workshop on Potential Technological Developments for Zero Carbon Buildings 16-17 Oct 2013 Sustainable Building Façade and Advanced Fenestration Systems Tin-Tai Chow Building Energy & Environmental Technology

More information

SOLAR XXI: A Portuguese Office Building towards Net Zero-Energy Building

SOLAR XXI: A Portuguese Office Building towards Net Zero-Energy Building SOLAR XXI: A Portuguese Office Building towards Net Zero-Energy Building Helder Gonçalves PhD, Director of the Energy Laboratory, National Energy and Geology Laboratory, Portugal email: helder.goncalves@lneg.pt

More information

Cost-Benefit Analysis of Dwelling Retrofit Options

Cost-Benefit Analysis of Dwelling Retrofit Options Cost-Benefit Analysis of Dwelling Retrofit Options The objective was to study the thermal behaviour of the existing house and suggest cost effective improvements. Over recent years the energy efficiency

More information

Results from the Application of the Maltese Energy Performance Rating of Dwellings in Malta EPRDM Software to a New Block of Apartments

Results from the Application of the Maltese Energy Performance Rating of Dwellings in Malta EPRDM Software to a New Block of Apartments Results from the Application of the Maltese Energy Performance Rating of Dwellings in Malta EPRDM Software to a New Block of Apartments Charles Yousif Institute for University of Malta with Celia Pérez

More information

Thermal Characteristics of a Vernacular Building Envelope

Thermal Characteristics of a Vernacular Building Envelope Thermal Characteristics of a Vernacular Building Envelope Priyanka Dhar, M.Tech. Department of Energy, Tezpur University, Tezpur, 784028, Assam, India Pallavi Borah, M.Tech. Department of Energy, Tezpur

More information

Cool Roof Case Studies

Cool Roof Case Studies Michele Zinzi ENEA Cool Roof Case Studies 09/03/2014 European Cool Roofs Council 1 Solar reflecting materials for the building envelope were a widely used construction technology The Mediterranean region

More information

Study of the energy performance of a retrofitting office

Study of the energy performance of a retrofitting office Study of the energy performance of a retrofitting office Paolo Valdiserri CIRI Edilizia Costruzioni, Università di Bologna paolo.valdiserri@unibo.it Abstract Building retrofitting is the most feasible

More information

Effect of Building Orientation and Window Glazing on the Energy Consumption of HVAC System of an Office Building for Different Climate Zones

Effect of Building Orientation and Window Glazing on the Energy Consumption of HVAC System of an Office Building for Different Climate Zones Effect of Building Orientation and Window Glazing on the Energy Consumption of HVAC System of an Office Building for Different Climate Zones Maya Yeshwanth Pai Dept. of Electrical & Electronics Engineering

More information

Assessing external double skin envelopes coupled with night ventilation and thermal mass for passive cooling in the tropics

Assessing external double skin envelopes coupled with night ventilation and thermal mass for passive cooling in the tropics J. Zuo, L. Daniel, V. Soebarto (eds.), Fifty years later: Revisiting the role of architectural science in design and practice: 50 th International Conference of the Architectural Science Association 2016,

More information

Available online at ScienceDirect. Energy Procedia 78 (2015 ) th International Building Physics Conference, IBPC 2015

Available online at  ScienceDirect. Energy Procedia 78 (2015 ) th International Building Physics Conference, IBPC 2015 Available online at www.sciencedirect.com ScienceDirect Energy Procedia 78 (2015 ) 340 345 6th International Building Physics Conference, IBPC 2015 The influence of solar control films on energy and daylighting

More information

Thermal insulation of buildings and cooling demand

Thermal insulation of buildings and cooling demand 411 Thermal insulation of buildings and cooling demand C. Hamans Rockwool International S.A.,The Netherlands ABSTRACT Thermal insulation in the warm climate can reduce the energy demand for cooling in

More information

Available online at ScienceDirect. Energy Procedia 78 (2015 )

Available online at   ScienceDirect. Energy Procedia 78 (2015 ) Available online at www.sciencedirect.com ScienceDirect Energy Procedia 78 (2015 ) 1568 1573 6th International Building Physics Conference, IBPC 2015 Dynamic facades, the smart way of meeting the energy

More information

Comparative Study of Energy Consumption Optimization for. Different Orientations of School`s Buildings in Jordan

Comparative Study of Energy Consumption Optimization for. Different Orientations of School`s Buildings in Jordan Comparative Study of Energy Consumption Optimization for Different Orientations of School`s Buildings in Jordan Main Author: Arch. Tala Samir Awadallah Co.Author: Dr. Omaimah Ali Al-Arja School of Architecture

More information

Applications of ECOTECT and HEED in building energy analysis - Case study: A typical tube house in Hanoi

Applications of ECOTECT and HEED in building energy analysis - Case study: A typical tube house in Hanoi Applications of ECOTECT and HEED in building energy analysis - Case study: A typical tube house in Hanoi (1) Wei-Hwa Chiang (2) Nguyen Ngoc Tu (3) Jian Sheng Huang (1)whch@mail.ntust.edu.tw (2)M9602806@mail.ntust.edu.tw

More information

Healthy Buildings 2017 Europe July 2-5, 2017, Lublin, Poland

Healthy Buildings 2017 Europe July 2-5, 2017, Lublin, Poland Healthy Buildings 217 Europe July 2-5, 217, Lublin, Poland Paper ID 89 ISBN: 978-83-7947-232-1 THERMAL RETROFIT OF A RESIDENTIAL BUILDING IN ROMANIA TO REACH LOW-CONSUMPTION ENERGY TARGETS Andrei DAMIAN

More information

Optimization of air tightness and night ventilation for Passive houses in Italian climates under Fanger and Adaptive comfort models

Optimization of air tightness and night ventilation for Passive houses in Italian climates under Fanger and Adaptive comfort models L. Pagliano et al, I: Optimization of air tightness and night ventilation for Passive houses in Italian climates... 1 Optimization of air tightness and night ventilation for Passive houses in Italian climates

More information

Radical POTENTIAL!! COMFORT ZONE WHAT IS IT? WHAT DOES IT HAVE TO DO WITH GREEN BUILDING + ZERO CARBON?

Radical POTENTIAL!! COMFORT ZONE WHAT IS IT? WHAT DOES IT HAVE TO DO WITH GREEN BUILDING + ZERO CARBON? Radical POTENTIAL!! COMFORT ZONE WHAT IS IT? WHAT DOES IT HAVE TO DO WITH GREEN BUILDING + ZERO CARBON? Where is your Comfort Zone? This famous illustration is taken from Design with Climate, by Victor

More information

Solar gains in the glazing systems with sun-shading

Solar gains in the glazing systems with sun-shading 729 Solar gains in the glazing systems with sun-shading G. Oliveti, N. Arcuri, R. Bruno, M. De Simone University of Calabria, Italy ABSTRACT This paper presents the optical and thermal performances of

More information

ANALYSIS OF ENVELOPE THERMAL BEHAVIOUR THROUGH PARAMETRIC STUDIES. Civil Engineer, PhD, Assistant Professor, Civil Engineering Department (3)

ANALYSIS OF ENVELOPE THERMAL BEHAVIOUR THROUGH PARAMETRIC STUDIES. Civil Engineer, PhD, Assistant Professor, Civil Engineering Department (3) Eighth International IBPSA Conference Eindhoven, Netherlands August 11-14, 2003 ANALYSIS OF ENVELOPE THERMAL BEHAVIOUR THROUGH PARAMETRIC STUDIES Chvatal, Karin M. S. (1), Corvacho, M. Helena P. (2), Maldonado,

More information

Extended pilot study of an energy efficient glazed office building during pre-design and design. Åke Blomsterberg (WSP och LTH)

Extended pilot study of an energy efficient glazed office building during pre-design and design. Åke Blomsterberg (WSP och LTH) Extended pilot study of an energy efficient glazed office building during pre-design and design Åke Blomsterberg (WSP och LTH) 2 Project participants Client: Midroc projects Design: WSP at fixed price

More information

Chapter 9 Integration of BSA tools in building design tools 909

Chapter 9 Integration of BSA tools in building design tools 909 Chapter 9 Integration of BSA tools in building design tools 99 Integrated Approach for Intelligent Envelope Design: Simulation performance of building envelope design strategies and technologies during

More information

Building performance analysis for double skin residential buildings ABSTRACT BACKGROUND. Porooshat Akhgari

Building performance analysis for double skin residential buildings ABSTRACT BACKGROUND. Porooshat Akhgari Building performance analysis for double skin residential buildings Porooshat Akhgari ABSTRACT Many Architects and their clients prefer to have buildings with glass façade. Most of these buildings have

More information

A Study on the Analysis of Indoor Temperature. According to the PCM Temperature Applied to the. Double Skin Facade System for Saving Cooling

A Study on the Analysis of Indoor Temperature. According to the PCM Temperature Applied to the. Double Skin Facade System for Saving Cooling Contemporary Engineering Sciences, Vol. 7, 2014, no. 21, 1005-1012 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/ces.2014.49126 A Study on the Analysis of Indoor Temperature According to the

More information

Thermal Characteristics and Energy Performance of Double Skin. Façade System in the Hot Summer and Cold Winter Zone

Thermal Characteristics and Energy Performance of Double Skin. Façade System in the Hot Summer and Cold Winter Zone Thermal Characteristics and Energy Performance of Double Skin Façade System in the Hot Summer and Cold Winter Zone L.F. Shu 1, G.Q. He 1,*, S.M. Zhang 1 and Q.A. Bai 2 1 College of Civil Engineering and

More information

A STUDY ON DESIGN OPTIMIZATION OF A NEAR NET-ZERO ENERGY HOUSE

A STUDY ON DESIGN OPTIMIZATION OF A NEAR NET-ZERO ENERGY HOUSE Int. Journal for Housing Science, Vol.37, No.1 pp.23-31, 2013 Published in the United States A STUDY ON DESIGN OPTIMIZATION OF A NEAR NET-ZERO ENERGY HOUSE Narghes Doust, Gabriele Masera and Marco Imperadori

More information

CHAPTER 6 CONCLUSION

CHAPTER 6 CONCLUSION 255 CHAPTER 6 CONCLUSION This study thoroughly assessed the design principles employed in simple, durable and eco-friendly vernacular dwellings in the coastal regions of Tamil Nadu and their effectiveness

More information

Evaluation of PV technology implementation in the building sector

Evaluation of PV technology implementation in the building sector International Conference Passive and Low Energy Cooling 677 Evaluation of PV technology implementation in the building sector J.J. Bloem and A. Colli EC DG Joint Research Centre, Renewable Energies, Ispra,

More information

Simulation and Energy Analysis of Thermal Environment of Unassisted Passive Solar House

Simulation and Energy Analysis of Thermal Environment of Unassisted Passive Solar House , pp.84-89 http://dx.doi.org/10.14257/astl.2016.123.17 Simulation and Energy Analysis of Thermal Environment of Unassisted Passive Solar House Hou Gang 1, Li Bing 2 1 School of Civil Engineering and Architecture,

More information

Proceedings of BS2013: 13th Conference of International Building Performance Simulation Association, Chambéry, France, August 26-28

Proceedings of BS2013: 13th Conference of International Building Performance Simulation Association, Chambéry, France, August 26-28 CLIMATIC BASED CONSIDERATION OF DOUBLE SKIN FAÇADE SYSTEM: NATURAL VENTILATION PERFORMANCE OF A CASE STUDY WITH DOUBLE SKIN FAÇADE IN MEDITERRANEAN CLIMATE ABSTRACT There is an unexploited opportunity

More information

International Journal of Civil and Environmental Engineering 3:2 2011

International Journal of Civil and Environmental Engineering 3:2 2011 Investigating the Effectiveness of Self-Shading Strategy on Overall Thermal Transfer Value and Window Size in High Rise Buildings Mansour Nikpour, Mohd Zin kandar, Mohammad Ghomeshi, Nima Moeinzadeh, Mohsen

More information

The effect of shading design and control on building cooling demand

The effect of shading design and control on building cooling demand International Conference Passive and Low Energy Cooling 953 for the Built Environment, May 25, Santorini, Greece The effect of shading design and control on building cooling demand A. Tzempelikos and A.K.

More information

Thermal comfort in a 21st century climate

Thermal comfort in a 21st century climate CIBSE Briefing Thermal comfort in a 21st century climate Addressing the impact of climate change on the built environment Summary This briefing summarises the key findings of research* commissioned by

More information

Comparison of the Effects of Various Countermeasures on Energy Consumption in a Residential Building

Comparison of the Effects of Various Countermeasures on Energy Consumption in a Residential Building Comparison of the Effects of Various Countermeasures on Energy Consumption in a Residential Building TAKAHIRO UEMOTO 1, DAISUKE NARUMI 1, YOSHIYUKI SHIMODA 1 1 Division of Sustainable Energy and Environmental

More information

362: Indoor climate control effect of AAC panels as determined by house model measurements and simulations

362: Indoor climate control effect of AAC panels as determined by house model measurements and simulations PLEA 8 th Conference on Passive and Low Energy Architecture, Dublin, 22 nd to 24 th October 8 362: Indoor climate control effect of AAC panels as determined by house model measurements and simulations

More information

ADJUSTABLE SOLAR SHADING AND HEAT CONSERVATION LOUVRES FOR TRANSPARENT, MULTI-LAYERED GLASS FACADES

ADJUSTABLE SOLAR SHADING AND HEAT CONSERVATION LOUVRES FOR TRANSPARENT, MULTI-LAYERED GLASS FACADES ADJUSTABLE SOLAR SHADING AND HEAT CONSERVATION LOUVRES FOR TRANSPARENT, MULTI-LAYERED GLASS FACADES Werner Lang, Thomas Herzog Chair of Building Technology, Institute for Architectural Design and Engineering

More information

Available online at ScienceDirect. Energy Procedia 57 (2014 )

Available online at  ScienceDirect. Energy Procedia 57 (2014 ) Available online at www.sciencedirect.com ScienceDirect Energy Procedia 57 (2014 ) 1659 1668 2013 ISES Solar World Congress Application of Building Integrated Active and Passive Solar Technology in Harsher

More information

European Timber Windows & Doors

European Timber Windows & Doors European Timber Windows & Doors Providers of Passivhaus building performance solutions Passive House Pty Ltd 7-9 Raglan St North Melbourne VIC p 03 9329 3693 e info@passivehouse.com.au Building Thermal

More information

Energy performance of a ventilation system for an apartment according to the Italian regulation

Energy performance of a ventilation system for an apartment according to the Italian regulation Int J Energy Environ Eng (2016) 7:353 359 DOI 10.1007/s40095-014-0159-4 ORIGINAL RESEARCH Energy performance of a ventilation system for an apartment according to the Italian regulation P. Valdiserri C.

More information

Daylight, Solar Gains and Overheating Studies in a Glazed Office Building

Daylight, Solar Gains and Overheating Studies in a Glazed Office Building Issue 2, Volume 2, 2008 129 Daylight, Solar Gains and Overheating Studies in a Glazed Office Building Hasim Altan, Ian Ward, Jitka Mohelníková, František Vajkay Abstract The Glazed envelopes represent

More information

Experimental Study to Evaluate the Performance of Iraqi Passive House in Summer Season

Experimental Study to Evaluate the Performance of Iraqi Passive House in Summer Season Journal of Energy and Power Engineering 9 (2015) 386-392 doi: 10.17265/1934-8975/2015.04.008 D DAVID PUBLISHING Experimental Study to Evaluate the Performance of Iraqi Passive House in Summer Season Ghanim

More information

Thermal Control in Buildings by John Straube (updated )

Thermal Control in Buildings by John Straube (updated ) building science.com 2006 Building Science Press All rights of reproduction in any form reserved. Building Science Digest 011 Thermal Control in Buildings 2006-11-02 by John Straube (updated 2011-12-12)

More information

Architectural Design with Environmental Solutions as a Scope for Sustainability: Achieving Energy Efficiency in Buildings Passively

Architectural Design with Environmental Solutions as a Scope for Sustainability: Achieving Energy Efficiency in Buildings Passively www.insightcore.com Journal of Buildings and Sustainability 2016 Vol. 1 No. 2 Architectural Design with Environmental Solutions as a Scope for Sustainability: Achieving Energy Efficiency in Buildings Passively

More information

Financing Energy Efficiency in Malta and Italy

Financing Energy Efficiency in Malta and Italy Financing Energy Efficiency in Malta and Italy Westin Dragonara Resort, St Julians, Malta 22 November 2018 Overview of Energy Performance of the Maltese Housing Stock Prof. Vincent Buhagiar Department

More information

JOTUN Cool Shades. Impact of the TSR Value on the Users Comfort and the Energy Performance of Buildings. ai³ Werner Jager

JOTUN Cool Shades. Impact of the TSR Value on the Users Comfort and the Energy Performance of Buildings. ai³ Werner Jager JOTUN Cool Shades Impact of the TSR Value on the Users Comfort and the Energy Performance of Buildings ai³ Werner Jager Exclusion of warranty: All tables, graphical charts and results presented within

More information

HEADQUARTERS OF THE COMISIÓN NACIONAL DEL MERCADO DE VALORES. DOUBLE FAÇADE SIMULATION STUDY. Barcelona, Spain.

HEADQUARTERS OF THE COMISIÓN NACIONAL DEL MERCADO DE VALORES. DOUBLE FAÇADE SIMULATION STUDY. Barcelona, Spain. HEADQUARTERS OF THE COMISIÓN NACIONAL DEL MERCADO DE VALORES. DOUBLE FAÇADE SIMULATION STUDY Carla Planas 1, Raquel Clemente 1, Vanessa Escalona 1, Mauricio Torres 2,, Pere Alavedra 2, Amado Guzmán 2,

More information

additional cooling energy consumption. Because the thermal resistance of windows has always been a weak point, even with vacuum glass or low-e glass,

additional cooling energy consumption. Because the thermal resistance of windows has always been a weak point, even with vacuum glass or low-e glass, Simulation Study of Automated Blinds Control Strategy for Minimizing Cooling and Lighting Energy Consumptions L. Xiao 1, F. Wang 2,*, Y. Gao 2, T. Gong 2, Y. Di 2, Y. Qian 2, and X. Luo 2 1 School of Mechanical

More information

Characterization and performance evaluation of solar shading devices

Characterization and performance evaluation of solar shading devices Characterization and performance evaluation of solar shading devices Inês P. Santos, Research Assistant, Department of Civil Engineering, Technical University of Denmark; isa@byg.dtu.dk, www.byg.dtu.dk

More information

Q-Air unique selling propositions in detail

Q-Air unique selling propositions in detail Q-Air unique selling propositions in detail Afraid of sitting at the window in winter? Q-Air offers a U value so low that there can be no perceptible cold air movement at the panoramic window even in coldest

More information

ADAPTIVE LOW-E DOUBLE GLAZING WINDOW

ADAPTIVE LOW-E DOUBLE GLAZING WINDOW ADAPTIVE LOW-E DOUBLE GLAZING WINDOW Hussein Abaza 1 and Ihab Sa ad 2 ABSTRACT This paper investigates the thermal performance of a new adaptive window which is seasonally reversible. The new window is

More information

Hamza N, Qian Z. Validating the Performance of a Double Skin Facade in Winter in a Hot Arid Context.

Hamza N, Qian Z. Validating the Performance of a Double Skin Facade in Winter in a Hot Arid Context. Hamza N, Qian Z. Validating the Performance of a Double Skin Facade in Winter in a Hot Arid Context. In: Passsive and Low Energy Architecture (PLEA2016):. 2016, Los Angeles, USA. Copyright: The conference

More information

Best Practice Guidelines for Double Skin Facades

Best Practice Guidelines for Double Skin Facades Best Practice Guidelines for Double Skin Facades A. Blomsterberg 1 1 Energy and Building Design, Lund Institute of Technology, P.O. Box 118, SE-22100 Lund, Sweden and WSP Environmental, Slagthuset, SE-21120

More information