Documentation of pilot project Apartment building in Vaives street 4, Cesis city

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1 Documentation of pilot project Apartment building in Vaives street 4, Cesis city Market Transformation Towards Nearly Zero Energy Buildings Through Widespread Use of Integrated Energy Design (MaTrID): IEE/11/989/SI Reporting template Ekodoma, Latvia Work Package 4 Salvatore Carlucci, eerg-polimi, Italy Ronnie Hollsten, KanEnergi, Sweden Stefan Amann, e7, Austria

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3 Contact details of MaTrID partners Salvatore Carlucci, PhD end-use Efficiency Research Group, Energy Department, Politecnico di Milano Via Lambruschini Milano, Italy Ronnie Hollsten KanEnergi Sweden AB Box Skara, Sweden Stefan Amann e7 Energie Markt Analyse GmbH Theresianumgasse 7/1/ Vienna, Austria Disclaimer The MaTrID project is supported by the European Commission in the Intelligent Energy for Europe Programme. The sole responsibility for the content of this publication lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission is responsible for any use that may be made of the information contained therein. The MaTrID project duration is from June 19, 2012 December 18, 2014 (Contract Number: IEE/11/989/SI ).

4 Documentation of pilot project Apartment building in Vaives street 4 Table of content 1 Background information About this pilot project Design goals Work organisation Team composition ID facilitator: role and function ID facilitator mandate Communication among the team members Use of Building Information Model (BIM) tools File sharing system Information sharing Transfer of knowledge ID Strategy Workflow Quality assurance plan & Quality control plan Setting responsibles, milestones and highlighting critical points per each design phase Innovation and Demonstration Innovative solutions Demonstration (Results and Process) Trials/evaluation Awareness rising

5 1 Background information All pilot projects in WP4 have to be clearly documented. The following structure helps to keep track on IED processes in partner countries. This template emerges from work done in WP5 and WP6. 2 About this pilot project Name/acronym of the pilot project: Apartment building in Vaives street 4 Owner: flat owners Name of contact person: Raivo Damkevics Function of contact person: director Location: Cēsis city, Latvia Type of the building: Residential apartment building Gross floor space in m²: 2437,6 Investment costs in EUR: More information: 3 Design goals The candidate partner can here describe the design goals that are inspiring the design effort. For each of them, please report explicitly the target values or the acceptability conditions. 2

6 Table 1: Design goals per design phase. Design goal Aesthetics Describe the goal and the set-point values if applicable Before renovation building represents typical soviet period buildings. Such buildings represent the biggest share of all building stock not only in Latvia but also in other east European countries. The aim of the renovation is not only to ensure comfortable indoor climate and decrease energy consumption, modernize other engineering systems but also significantly improve building aesthetics value. Beside energy efficiency measures during the project design phase it s planned to refurbished and repainted, the balconies, cold water supply system and all staircases. Building before renovation 3

7 Design goal Accessibility Cost-effectiveness Describe the goal and the set-point values if applicable The entrance doors and staircases have been redesigned and partly rebuild. Main entrances were redesign for use by disabled persons and overall security of the doors was improved. Energy service contract (EPC) has been used to cover building renovation costs and implement the project. As well support from structural funds have been attracted. EPC contract is based on the principle that apartment owner of the building during the whole validity period of the building pays to the ESCO company for the same amount of energy this building would consume without renovation. So the aim is not to increase payments for the building residents and in the same time renovate the building. As EPC contract is used, before building renovation during project initial phase different renovation options are analyzed starting from some basic measures to comprehensive building renovation with integration of mechanical ventilation and RES systems to achieved very low energy building level. 4

8 Design goal Energy efficiency Describe the goal and the set-point values if applicable The main objectives of this project are to renovate the building envelope, technical systems, reduce energy consumption and improve indoor comfort in building. Energy consumption before renovation for space heating and hot water 202 kwh/m 2 a. The plan The main targets are to reduce energy consumption for space heating from148 kwh/m 2 a to 63 kwh/m 2 a. The measures planned: Insulation of outer walls Insulation of the attic slab and basement ceiling Replacement of windows Space heating system of the building Domestic hot water system Energy monitoring system Reconstruction of the roof Refurbishment of the entrance Refurbishment of the staircase Renovation of cold water system Reconstruction of loggias Refurbishment of ventilation shaft Building envelop and ventilation technical information: Before renovation Walls: U value from 0,77 to 0,93 W/(m 2 K); Attic: U value from 0,77 W/(m 2 K); Windows: U value from 1,8 to 2.6 W/(m 2 K) Entrance doors: U value = 3,7 W/(m 2 K) Planned after renovation Walls: U 0,27 W/(m 2 K) Attic: U 0,12 W/(m 2 K) Windows: U 1,4 W/(m 2 K) Entrance doors: U 1,8 W/(m 2 K) Basement: 0,62 W/(m 2 K) Basement: U 0,21 W/(m 2 K) Ventilation: natural ventilation non balanced Ventilation: mechanical ventilation with heat recovery (planned efficiency>75%) 5

9 Design goal Functional/Operational goals Historic preservation Describe the goal and the set-point values if applicable One of the main challenges during renovation was to ensure that building can operate also during renovation process. The refurbishment scenario chosen: to avoid internal works as possible to allow operating during renovation works. It s planned that new ventilation system ducts will be placed along the façade in the insulation layer. Not applicable Productivity Secure/Safety It is planned to improve indoor climate in the building. New energy monitoring system will allow not only to follow energy consumption in the building but also to follow indoor climate conditions. Mechanical ventilation system is planned to ensure fresh air to the residents after building renovation. During post-occupancy evaluation phase CO 2 and relative humidity measurements are planned to optimize ventilation system to ensure high quality. The new windows and entrance doors improve the safety of the building. Sustainability One of the highest energy efficiency potential and possibilities to reduce CO 2 emissions is in existing housing stock. At the moment the renovation of the existing building stock is of the biggest challenges not only in Latvia but in Europe at all. After renovation in building energy consumption decreased and reduced costs for space heating and hot water preparation. As well higher indoor climate for residents will be ensured. Full renovation of building prolongs a longer buildings lifetime. Significant benefits in reduction of harmful emissions (CO 2, CH 4, N 2 O, NO x, CO and VOC). After building renovation Other Procurement process and included environmental and energy criteria were used to define appropriate and energy-efficient selection of materials, building components, techniques, and suitable companies for work implementation. 6

10 4 Work organisation 4.1 Team composition Has been the design team the same during the whole process? Has the multidisciplinary team increased the effectiveness of the design phase? Has the multidisciplinary team anticipated interferences between activities and avoided problems? Do you consider useful the constitution of a multidisciplinary team from the beginning of the design activities? The work of the team has been lead by ESCO company project manager who is specialized in building renovation projects. The team consisted from different engineers, energy auditors, engineering consultants to develop building renovation alternatives (Ekodoma). During the design phase work team didn t change. Already after the tendering process when constructions works have began the construction company joined the team. The manager from ESCO company was organizing and managing whole design process. 4.2 ID facilitator: role and function Describe the role of the ID facilitator during the development of the pilot project. Describe within maximum one page your level of actual involvement in the respective phase: Initial planning phase, Competition phase (if applicable in your country), Concept design phase, Detailed design phase, Construction phase. Table 2: Role of the ID Facilitator per design phase. Design phase Initial planning phase Describe the involvement of the ID Facilitator high Competition phase high Concept design phase high Detailed design phase Medium Construction phase low 7

11 Design phase Describe the involvement of the ID Facilitator 4.3 ID facilitator mandate Has the ID facilitator received a mandate from the owner? Please, attach a copy of the mandate in the Annex X at the end of this report if possible. There was not specially assigned ID facilitator, the process itself was collaborative but ESCO company manager has organizing and managing all process. ESCO company manager is assigned from client side to renovate the building and it s their responsibility to organize whole process. 5 Communication among the team members 5.1 Use of Building Information Model (BIM) tools In case more than one BIM tool was used during the design, there were problems in sharing the numerical model among the team members? Can you briefly report your experience in using BIM tools, basically by referring to the lessons learnt? Do you think that the level of development of the software you used is adequate to be used in the practice? Can you point out some lacks you found in using BIM tools? The file sharing system and parametric modelling tool Autodesk Revit has been used within the team. This allows planning and tracking progress at various stages in the building's lifecycle, from concept to construction 5.2 File sharing system How do you evaluate the efficiency of your file sharing system? On the base of the experience gained during this project, would you take in consideration the adoption of more advanced systems to share files? All files have been placed in common server that all design team members can access the files. But the communications between different tram members have been organized during regular meetings, phone calls and s. 8

12 5.3 Information sharing How do you evaluate the efficiency of sharing information during this project? On the base of the experience gained during this project, would you take in consideration the adoption of more advanced systems to share information? Sometimes file-sharing systems contains the same files and it was hard to understood which of the files are the latest version and weather something has been changed recently. It would require some improvements in a future. 5.4 Transfer of knowledge Transfer of knowledge is about how the ID process increases understanding and knowledge of all specialists work conditions. The aim of transferring this knowledge is that by increasing awareness and knowledge during all stages of the planning process it should provide even better ID processes in the future. Describe how transfer of knowledge took place among architects, engineers and developer. From the very beginning the common workshop has been organized for all companies and experts involved. The common workshop and training has been organized for all team participates. 6 ID Strategy Workflow 6.1 Quality assurance plan & Quality control plan A Quality Assurance Program describes the overall goals for the building. The values have to be described both as goals and demands. It may also be useful to weight the goals or rank them. It is important that the Quality Assurance Program is deeply rooted in the decision makers of the project and it should be given the same status as the budget and time schedule for the project. The Quality Assurance Program has to be followed up by a Quality Control Plan. This plan is a tool for the project team and a document that makes it possible for the building owner to control and follow up the goals. The quality control plan defines goals and related sub goals, defines milestones through the planning and construction phases, and specifies who is responsible for each task. 9

13 In project preparation phase the short work programme has been prepared where the main milestones, responsibilities and time frame has been presented. 6.2 Setting responsibles, milestones and highlighting critical points per each design phase The responsible in charge for a given design phase helps the ID facilitator in managing the whole process. He/she has the responsibility for the correct implementation of the tasks planned in a specified phase and for the on-time execution of the activities. A milestone is a formal checkpoint defined by the whole design team during the initial planning phase. It can be a formal approval by the owner or the delivery of one or a set of documents. The approval of a milestone allows access to a subsequent phase. A critical point is an unexpected situation that has occurred during a given design phase. Please report the solution discussed within and proposed by the design team. 10

14 Documentation of pilot project Apartment building in Vaives street 4 Table 3: Responsibles, milestones, critical points and outcomes per design phase. Design phase Responsible(s) in charge for the phase Milestone(s) Critical point(s) Outcome(s) Initial planning phase ESCO company and Ekodoma To prepare proposal for renovation to achieve low energy building standard and to see how building could be financed. Energy audit for existing building with aim to investigate possibilities to decrees energy consumption and improve indoor environment. Availability of reliable energy consumption data. To prepare proposal for renovation to achieve low energy building standard and to see how building could be financed. Competition phase ESCO company To prepare procurement and attract financing Concept design phase ESCO company, Ekodoma and architect company Balts un Melns To plan targets for: Indoor temperatures; Energy consumption after renovation; Possibilities to utilise renewable energy As project is partly financed by grant there should be public procurement organized. Public procurement rules makes difficult to procure services with are based on performance achieved. To prepare green procurement To plan targets for: Thermal bridges; Air tightness; Indoor temperatures; Energy consumption after renovation; Possibilities to utilise 11

15 Detailed design phase Architect company Balts un Melns and engineering company Green lab Construction phase Supervision of ESCO company Develop technical design. Quality control and measurements on site: Infrared inspections with Thermal Imaging Camera ; General temperature measurements; renewable energy. Develop technical design. Quality control and measurements on site: Infrared inspections with Thermal Imaging Camera ; General temperature measurements; 12

16 Documentation of pilot project Apartment building in Vaives street 4 7 Innovation and Demonstration 7.1 Innovative solutions To achieve environmental and economic objectives energy efficiency in Latvian building sector should be drastically increased. More solution to reach very low energy building standard is needed. Improvement of energy efficiency level in buildings is a complex problem combination as decision involves many different factors that should be taken in account. Standards like Latvian Building Code LBN can t be used to achieve reasonable expenses in renovation. Analyses conducted enabled determination of optimal sets of measures for energy efficiency for similar type of buildings dormitories. The analysis demonstrates that in considering long-term investments in measures for energy efficiency, it is necessary to implement complex renovations that enable achievement of energy consumption for heating that corresponds to very low energy building standard. 7.2 Demonstration (Results and Process) At the moment building technical design is finished and buildings are under renovation. 7.3 Trials/evaluation During renovation energy and indoor environment monitoring system will be installed to check results achieved. 7.4 Awareness rising Information about the project has been placed in the company s webpage and regular meetings with residents organized to informed about project development. 13