THEORETICAL PROOF OF CONCEPT OF AN OPTIMAL SOLAR RECEIVER TO PRODUCE LOW-TEMPERATURE (-40 C) COOLING USING A THERMOACOUSTIC TRI-THERMAL MACHINE

Size: px
Start display at page:

Download "THEORETICAL PROOF OF CONCEPT OF AN OPTIMAL SOLAR RECEIVER TO PRODUCE LOW-TEMPERATURE (-40 C) COOLING USING A THERMOACOUSTIC TRI-THERMAL MACHINE"

Transcription

1 THEORETICAL PROOF OF CONCEPT OF AN OPTIMAL SOLAR RECEIVER TO PRODUCE LOW-TEMPERATURE (-40 C) COOLING USING A THERMOACOUSTIC TRI-THERMAL MACHINE S. Cordillet 1, P. Duthil 2, F. Nepveu 3, T. Le Pollès 4, G. Olalde 3, A. Salome 3 and J-P. Thermeau 2 1 Ph.D student, Université de Paris Sud (PXI), Orsay / IPNO-IN2P3-CNRS, BP1, ORSAY cedex, and PROMES-CNRS, 7 rue du Four Solaire, ODEILLO (France), +33 (0) , 2 IPNO-IN2P3-CNRS, BP1, ORSAY cedex (France) 3 PROMES-CNRS, 7 rue du Four Solaire, ODEILLO (France) 4 Hekyom, 2 rue Jean Rostand, ORSAY (France) Abstract The innovative part of this project is to develop a thermoacoustic refrigeration system driven by concentrated solar energy. Solar thermoacoustic refrigeration offers three significant advantages: first, the possibility to easily reach a large range of low temperatures, second, the absence of moving parts, which is conducive of high reliability, and finally a low environmental impact. A few preliminary investigations have described the concept of the solar-powered thermoacoustic prime mover, but not on a kw production scale. It is considered here that 1.5 kw of cooling power is a challenging proof of concept, considering the overall targeted performance (40% of the ideal Carnot s efficiency) for the combination of the thermoacoustic prime-mover and the heat pump. The solar receiver s purpose is to induce mechanical power production by producing an efficient energy transfer from the solar concentrator to the oscillating working pressurized gas within the thermoacoustic prime mover. Acoustic waves are indeed the power carrier, as they travel from this prime mover to the thermoacoustic refrigerator. Since acoustic waves are very sensitive to external perturbations (e.g., spatial or temporal changes in the temperature of the hot heat exchanger), the goal of this study is to investigate ways to maintain both the temperature and the power transferred to the gas as constant as possible over space and time. This paper focuses on the steady-state spatial homogeneity, using a series of appropriate models. Preliminary design considerations are offered for the jot heat exchanger and its optimal location within the solar cavity. Keywords: solar receiver, solar refrigeration, thermoacoustics, spatial temperature homogeneity, concentration 1. Introduction In the current global warming context, the refrigeration industry is one of the most constrained by the Kyoto protocol. Considering that cooling demand increases with the intensity of solar radiation, solar refrigeration has been looked upon as a possible solution to reduce greenhouse gases. In thermoacoustic systems, the direct conversion from solar energy to mechanical energy is done without any moving component, which makes the process simple and reliable. Moreover, the working fluid that is used to develop the acoustic motion is usually a noble gas, such as helium, with no environment hazard. It is also a carbon-free process with virtually no energy costs as long as the sun is not obscured. Thermoacoustic systems are relatively new, and so far have been used for a few specific applications only, like space refrigeration at low temperatures. It is a tri-thermal machine : the refrigerator is at the cold temperature, solar source powered at a high temperature the prime mover and both exhaust the heat at ambient. Current thermoacoustic systems on the market are powered by electricity. Preliminary investigations (reviewed below) have suggested that thermoacoustic refrigeration machines could be operated

2 by a renewable energy source, such as solar. A solar-driven thermoacoustic device constitutes an alternative to systems based on absorption, adsorption or vapor compression cycles in the solar thermal field. Moreover, thermoacoustic systems are not limited by a specific working temperature (their range is large, from ambient to cryogenic temperatures) and are potentially more efficient than conventional systems. A few small-scale experimental solar thermoacoustic systems have been described in the literature. For instance, Chen [1] constructed the first solar-powered thermoacoustic cooler a decade ago. A parabolic dish collector heated it. However, the cooler just achieved a 1.5 C temperature drop due to gas leakage and thermal losses. Adeff and Hofler [2] experimentally studied a thermoacoustic refrigerator that was powered by solar radiation concentrated with a Fresnel lens. The refrigerator produced 2.5 W of cooling power, with the cold temperature reaching 5 C and a temperature drop of 18 C. Considering the current intensive development in concentrating solar power devices able to deliver cost-effective and scalable power in the multi-kw range at high temperatures, it now appears logical to combine a solar concentrator and a thermoacoustic device for cooling production on a kw scale. The whole project, whose initial phase is reported here, is supported by the ANR (French National Research Agency). It is conducted jointly by three research laboratories: PROMES-CNRS for the solar study, IPNO for the thermoacoustic and integration studies, LaTEP for the transient modeling of the global system and cold storage, and by an industrial partner specialized in thermoacoustics, HEKYOM. The goal of the work described here is to model, for steady-state conditions, a solar receiver capable of transmitting a power of 4.4 kw to pressurized helium at 50 bar, and with a targeted outlet temperature of 1000 K. The solar receiver consists of a heat exchanger placed inside a cavity irradiated by concentrated solar energy. A high temperature of about 1000 K is necessary for the thermoacoustic prime-mover to reach a sufficiently high efficiency. The principle of this system is as follows (Fig. 1): Solar radiation is collected by a parabolic dish (1) and focused onto a hot heat exchanger (2) inside a cavity (3). The gas, which circulates inside the hot heat-exchanger tubes, absorbs a power of about 4.4 kw. When the thermoacoustic prime mover reaches a sufficient temperature ( 1000 K), it generates a traveling wave with large acoustic power. This power is then used into a thermoacoustic refrigerator to pump heat from the cold heat-exchanger. Fig. 1: Solar thermoacoustic system For thermoacoustic prime movers currently manufactured, an electric resistance surrounds the hot heat exchanger and allows very good temperature homogeneity. For the present research, the hot heat exchanger has to be adapted to a solar source. The main difficulty here is to design an absorber with an ideally homogeneous spatial distribution of temperature, even though the distribution of the concentrated solar power that is incident in the cavity has a Gaussian-like shape. The latter spatial distribution limits the overall thermal performances of the absorber and may introduce high mechanical stresses. A detailed theoretical study is needed to optimize the prototype s dimensions. Otherwise, the thermal spatial variations may alter the performances of the thermoacoustic system. Therefore, any prospective change in the design of an existing and working thermoacoustic prime mover is a delicate proposal. This explains why

3 an existing design of the thermoacoustic system is considered here, thus placing strong geometric constraints on the solar receiver. 2. System modelling The development of accurate simulation tools allows the evaluation of the system s thermal behavior in relation to specific physical and geometrical parameters, and also in relation to a spatially non-uniform power source. This simulation method provides a way to optimize geometries and materials as a function of the targeted system performance. To reduce the detrimental effects of spatial inhomogeneity in the solar source, three research topics are being explored simultaneously: - adapting the parabolic dish design to obtain a homogeneous flux profile; - optimizing both the absorber position relative to the dish s focal plane and the cavity s shape (to limit thermal losses and homogenize temperatures around the receiver); - optimizing the heat exchanger s architecture (dimensions and geometry) and the materials of the absorber to homogenize its spatial temperature distribution and maximize the power transferred to the gas. The development of the necessary models needed to accomplish these tasks is described in what follows Flux map modeling The thermoacoustic system is designed to produce 1.5 kw of cooling power at -40 C. For this power target, the gas must acoustically transfer 4.4 kw (as mentioned previously), thus requiring a solar power input between 5 and 10 kw onto the receiver. However, the parabolic dish currently available for this experiment is largely oversized, since it delivers 50 kw of concentrated solar energy, with a peak flux of 9.5 MW/m 2. The power at the focus must therefore be considerably reduced. This can be achieved by installing a flux modulator between the concentrator and the receiver and by selecting the most appropriate absorber location relative to the focal plane. The concentrated solar radiation delivered by the concentrator is simulated with SOLTRACE, a raytracing model developed by the National Renewable Energy Laboratory (NREL). It is used to model interactions between solar radiation and optical systems, and then analyze the latter s performance. A detailed measurement campaign on the 50-kW solar concentrator [3] led to its simulation using an optical model composed of 4400 parabolic elements [4], and in which macroscopic optical errors (distortion of element, error of normal vector ) were associated to each element. This optical model provides satisfying results: the modeled flux peaks are 5% lower than the measured peaks, and the modeled power peaks are 1% lower than the measured values [3]. SOLTRACE is run specifically here to generate a map of the solar flux distribution on the absorber plan (as shown in Fig. 2). It allows for comparisons between various possible ways to reduce the useful concentrator area and to evaluate its impact on the intensity, geometry and homogeneity of the heat flux distribution in the focal plane. Fig. 2: Example of a solar flux map (12 cm behind the focal plane, mirror reflectance 94%)

4 2.2. Cavity modeling To characterize the thermal behavior of the solar receiver, the heat transfer processes (by radiation, conduction and convection) that take place inside and outside of the cavity, or around the hot heat exchanger, are considered in a detailed specific model that has been developed in the MATLAB environment. This model takes into account the cavity s geometry (circular aperture diameter and internal cavity diameter), the hot heat exchanger dimensions, as well as its position relative to the focal plane. The cavity is modelled as a cylindrical shape having a circular aperture (cf. Fig. 3). Internal surfaces are considered opaque, grey and diffuse for both reflection and emission. Through successive model iterations, the cavity s geometrical constraints have been optimized to increase the system s performance (i.e., to obtain the most homogeneous flux on the absorber s top surface, while generating sufficient transmitted power and only minimal thermal losses). Fig. 3: The cavity design The results of this optimization study show that a heat exchanger s surface smaller than 16x16 cm does not intercept the whole concentrated solar energy transmitted by the concentrator/flux modulator assembly. For instance, a 5x8 cm absorber intercepts only 61% of the incoming power at the optimal position, without taking into account thermal losses. In contrast, a 16x16 cm absorber, placed behind the focal plane, can absorb 90% of the total incident power (still without considering thermal losses). In the latter case, the main source of losses is thermal emission from the hot heat exchanger, which is at high temperature. Its optimal position is found at 10 cm behind the focal plane. This position actually offers two main advantages: - the cavity s aperture can be placed right in the focal plane and can therefore have a small diameter, which effectively reduces the thermal emission losses of the absorber (in the cavity) through it. The graph in Fig.4 presents, for four surface absorber temperatures (from 1000 K to 1300 K in 100 K increments), the global thermal efficiency of two different cases: a 16x16 cm absorber without any cavity; and the same absorber surrounded by an optimized cavity. The cavity can reduce losses up to 20% in the 1000 K case. Fig. 4: Thermal efficiency of the solar absorber as a function of distance from the focal plane, with or without a cavity around it.

5 - the peak flux on the absorber can be reduced: at a distance 15 cm behind the focal plane, a 16x16 cm absorber gets 83.4% of the total incident energy, while the power flux peaks at only 820 kw m - ², compared with 4450 kw m - ² at the focal plane. It is concluded that the optimal absorber location just defined offers a more homogeneous flux, since it can effectively avoid hot spots, which otherwise could impact the heat exchanger core homogeneity and induce thermo-mechanical stress. Moreover, according to this model, the highest efficiency of the solar energy transfer to the absorber is 70% Solar heat exchanger modeling The geometry of the solar heat exchanger is simulated as a parallelepiped box with internal layers of parallel tubes. The thermal model is constructed by porting the COMSOL code into MATLAB. COMSOL is a finite element analysis solver that can simulate coupled phenomena [5]. This powerful computational tool is used to analyze the heat transfer processes (by radiation, convection and conduction) inside and around the absorber. It is assumed that the exchanger s top surface is irradiated by a Gaussian power density distribution given by the flux map model (from Section 1.1) at the optimized distance to the focal plane defined by the cavity study (Section 1.2). To predict the heat transfer coefficient, which depends on both the pressurized gas and the acoustic wave characteristics, a thermoacoustic analysis of the acoustic field has been carried out by HEKYOM. From the numerical value thus found for this coefficient, 7 kw m -2 K -1, it has been evaluated that the optimal total number of tubes should be 100, each having an internal diameter of 3 mm and a length of 230 mm. With this arrangement, the acceptable range of concentrated solar flux on the absorber is between 125 and 450 kw m -2. The thermoacoustic dimensional specifications further require that the tubes must be placed in different layers to gain compactness and to fit the absorber (and its cavity) within the highefficiency solar area, i.e., the area irradiated at a distance of 10 cm from the focal plane (Section 1.3). A large number of simulations have been conducted to reduce the number of a priori geometric possibilities and to look for the best 2D geometrical distribution of the tubes. In turn, this arrangement would create the most efficient solid-gas heat transfer with an acceptable 2D temperature field: a difference between the highest and the lowest temperatures of 40 K inside the exchanger s core, and a difference of 10 K at any tube s internal surface. 3. Results 3.1. Silver /Inconel absorber To homogenize the absorber temperature and, consequently, to reduce thermal stresses, the first step is to use silver in the absorber to benefit from its high thermal conductivity. This should also reduce the scatter in the helium temperatures throughout the successive tube layers. To evaluate the performance of such an arrangement, the thermal behavior of an exchanger consisting of a filling material with high thermal conductivity (silver in this case) and of Inconel tubes (which must resist the high gas pressure) was compared to what would be obtained with an absorber entirely made of Inconel. The results of these simulations show that the silver/inconel absorber successfully reduces the temperature inhomogeneity by almost 95%, and that the thickness of the Inconel tubes has no notable influence, as long as it is less than 0.3 mm Geometrical distribution of the tubes Different configurations, obtained by increasing the number of layers, N, and the number of tubes in each layer, have been considered. For each configuration, the effect of varying the distance between the tubes has been studied. The goal is to optimize the absorber s temperature homogeneity based on the difference between the highest and the lowest temperatures ( Tsol) and to achieve the required gas temperature of 1000 K, based on the internal temperature reached by the tubes (Tmax).

6 The number of tubes per layer and their spatial distribution is modeled as follows. A parameter, q, is defined to represent the number of additional tubes from a layer to the next one: if q = 0, each layer has the same number of tubes; if q > 0, the number of tubes increases from the top layer to the bottom layer; if q < 0, the number of tubes decreases from the top layer to the bottom layer. The number of tubes for the first (or the last) layer is m 1 = 1 2 [2M tube,total N (N 1)q] (1) Thus, the numbers of tubes for all other layers are: m = m 1 q (2) i i + The results of these simulations appear in Figs. 5 and 6. They show that, for a solar heat exchanger placed 10 cm behind the focal plane, the optimal configuration consists of 3 layers of tubes, with a total thickness of about 2 cm. The best distances between the tubes are 0.5 and 2 mm along width and thickness, respectively. The former dimension is linked to the irradiated solar area dimensions, whereas the latter allows the best heat radial diffusion into the absorber core. Figure 7 shows the simulated temperature field for the optimized hot heat exchanger. It is found that the temperature field varies from a minimum of 1035 K around the edges of the heat exchanger to 1070 K around its center. Such a spatial gradient of 35 K is relatively low, but can still impair the performance of the thermoacoustic system. Further steps to improve the current preliminary design of the system are therefore desirable, and are outlined in the next section.

7 Fig. 5: Effect on the temperature field within the absorber of the number of layers (N) and the number of tubes in a layer. Fig. 6: Effect on the temperature field of the longitudinal (ex) and vertical (ey) distances between tubes Fig. 7: Result of simulations of the temperature field (in K) for a receiver with optimal dimensions

8 4. Further research To reduce temperature inhomogeneities, it is anticipated that the prototype absorber will have a curved shape. This will better fit the Gaussian distribution of the concentrated solar energy than a planar shape. Furthermore, the absorber will be advantageously covered with an Inconel layer. This intends to protect the silver plate against oxidation and to provide higher mechanical resistance. Such variations from the simpler initial design will need to be modeled and optimized. Absorber Further theoretical research will be devoted to the study of the heat transfer through the receiver under transient conditions. This is needed to evaluate the impact of any intermittent effect caused by rapid solar flux variations, due for instance to partial cloudiness. The computational tools developed for the present work will still be useful to evaluate these transient effects. An experimental study of this solar thermoacoustic pilot system is planned to start during the summer of The objectives of this experiment will be threefold: study and qualify the main sub-systems (solar cavity, solar absorber, thermoacoustic heat pump, cooling loop ), as well as the whole system, under different operational conditions; better understand the physical phenomena in the thermoacoustic prime mover; and validate the calculation tools developed during this project. Fig. 8: Solar heat exchanger into the thermoacoustic motor If, as anticipated, the calculation tools presented here are validated during the future experimental study, a new generation of thermoacoustic refrigeration systems of larger capacity (in the kw range) could be developed relatively easily. Acknowledgements This study as well as first author s doctoral studies has been made possible by the financial support of ANR, which is gracefully acknowledged. The authors also thank Dr. C. GUEYMARD for his help with the manuscript. References [1] R-L. CHEN, Design, Construction, and Measurement of a Larger Solar Powered Thermoacoustic Cooler, Pennsylvania State University, [2] J. A. ADEFF, T. J. HOFLER, Design and construction of a solar-powered, thermoacoustically driven, thermoacoustic refrigerator, in: Acoustical Society of America 139th Meeting Press Release, Melville, New York, April 26, [3] W. REINALTER, S.UMLER, P. HELLER, T. RAUCH, J-M GINESTE, A. FERRIERE, F. NEPVEU, Detailed performance analysis of the 10kW CNRS-PROMES Dish/Stirling system, Proc. 13 th Solar PACES International Symposium, Seville, Spain, [4] F. NEPVEU, Production décentralisée d électricité et de chaleur par système Parabole/Stirling : Application au système EURODISH, Thèse de Doctorat, Université de Perpignan, November 28, [5] COMSOL,

Syllabus Specialization Solar Thermal. European Master in Renewable Energy. Provider: University of Perpignan Via Domitia and PROMES-CNRS

Syllabus Specialization Solar Thermal. European Master in Renewable Energy. Provider: University of Perpignan Via Domitia and PROMES-CNRS Syllabus Specialization Solar Thermal European Master in Renewable Energy Site Félix Trombe d Odeillo : 7 rue du Four Solaire 10 Odeillo-Font-Romeu, France Tel. (0) 8 07 700 Fax. (0) 8 0 90 Site Tecnosud

More information

DESIGN AND EXPERIMENT OF PARABOLIC TROUGH COLLECTOR WITH NORTH-SOUTH ORIENTATION

DESIGN AND EXPERIMENT OF PARABOLIC TROUGH COLLECTOR WITH NORTH-SOUTH ORIENTATION DESIGN AND EXPERIMENT OF PARABOLIC TROUGH COLLECTOR WITH NORTH-SOUTH ORIENTATION Mr. Shailesh Prajapati 1 and Mr. Dip Shah 2 1,2 Assistant Proffesor,Mechanical Enginnering Department,Institute of Technolgy

More information

Tel: Laboratory for Renewable Energy and Dynamic Systems, FSAC - UH2C (Morocco) 2

Tel: Laboratory for Renewable Energy and Dynamic Systems, FSAC - UH2C (Morocco) 2 2024 Design and Thermodynamics performance evaluation of a new Stirling engine prototype M. Oulhazzan1, M. Nachtane1, D. Saifaoui1, D. Winninger2, Y. Aroussy1 E-mail: m_oulhazzan@yahoo.com, Tel: +212-611-973435

More information

SUPERVISED ROCK-MASS STORAGE OF THERMAL ENERGY PRODUCED BY A SOLAR THERMAL PANEL

SUPERVISED ROCK-MASS STORAGE OF THERMAL ENERGY PRODUCED BY A SOLAR THERMAL PANEL SUPERVISED ROCK-MASS STORAGE OF THERMAL ENERGY PRODUCED BY A SOLAR THERMAL PANEL Fabien Delaleux 1-2, Xavier Py 1, Régis Olives 1, Antoine Dominguez 2, Sandra Lanini 3, Denis Nguyen 3 1 Laboratoire PROcédés

More information

UNIT FOUR SOLAR COLLECTORS

UNIT FOUR SOLAR COLLECTORS ME 476 Solar Energy UNIT FOUR SOLAR COLLECTORS Concentrating Collectors Concentrating Collectors 2 For many applications it is desirable to deliver energy at temperatures higher than those possible with

More information

Thermoacoustics is going to make a lot of nnnnnnnoise

Thermoacoustics is going to make a lot of nnnnnnnoise PATXI DUTHIL*, JEAN-PIERRE THERMEAU*, THIERRY. LE POLLES** *Institut de Physique Nucléaire d Orsay **Société HEKYOM Thermoacoustics is going to make a lot of nnnnnnnoise DR Thanks to thermoacoustics, we

More information

A High Frequency Thermoacoustically Driven Thermoacoustic-Stirling Cryocooler

A High Frequency Thermoacoustically Driven Thermoacoustic-Stirling Cryocooler A High Frequency Thermoacoustically Driven Thermoacoustic-Stirling Cryocooler E.C. Luo, G.Y. Yu, S.L Zhu, W. Dai Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100080,

More information

Funded by. EU GCC CLEAN ENERGY NETWORK II Join us: Contact us:

Funded by. EU GCC CLEAN ENERGY NETWORK II Join us:   Contact us: EU GCC CLEAN ENERGY NETWORK II Join us: www.eugcc-cleanergy.net Contact us: contact@eugcc-cleanergy.net The sun as energy source The sun as energy source The sun as energy source The solar components Radiation

More information

SOLAR COOLING WITH SMALL SIZE CHILLER: STATE OF THE ART

SOLAR COOLING WITH SMALL SIZE CHILLER: STATE OF THE ART SOLAR COOLING WITH SMALL SIZE CHILLER: STATE OF THE ART F. Asdrubali, G. Baldinelli, A. Presciutti University of Perugia (Italy) - Industrial Engineering Department 14 th European Conference - Renewable

More information

Guidance page for practical work 1: modeling of a thermodynamic solar plant

Guidance page for practical work 1: modeling of a thermodynamic solar plant Guidance page for practical work 1: modeling of a thermodynamic solar plant 1) Objectives of the practical work The project objective is to study the operation of thermodynamic solar plants, to show how

More information

20-CSP Technologies. ECEGR 452 Renewable Energy Systems

20-CSP Technologies. ECEGR 452 Renewable Energy Systems 20-CSP Technologies ECEGR 452 Renewable Energy Systems Overview Parabolic Trough Collector (PTC) Centralized Receiver Systems (solar towers) Dish Thermal Energy Storage Hybrid Systems Dr. Louie 2 PTC Technology

More information

COMPARATIVE STUDIES ON THERMAL EFFICIENCY OF SINGLE AND DOUBLE GLAZED FLAT PLATE SOLAR WATER HEATER

COMPARATIVE STUDIES ON THERMAL EFFICIENCY OF SINGLE AND DOUBLE GLAZED FLAT PLATE SOLAR WATER HEATER COMPARATIVE STUDIES ON THERMAL EFFICIENCY OF SINGLE AND DOUBLE GLAZED FLAT PLATE SOLAR WATER HEATER J. Manikandan and B. Sivaraman Department of Mechanical Engineering, Annamalai University, Chidambaram,

More information

Design of a new concentrated photovoltaic system under UAE conditions

Design of a new concentrated photovoltaic system under UAE conditions Design of a new concentrated photovoltaic system under UAE conditions Ahmed Amine Hachicha, and Muahammad Tawalbeh Citation: AIP Conference Proceedings 1850, 110004 (2017); View online: https://doi.org/10.1063/1.4984478

More information

Photovoltaics under concentrated sunlight

Photovoltaics under concentrated sunlight Photovoltaics under concentrated sunlight April 2, 2013 The University of Toledo, Department of Physics and Astronomy Principles and Varieties of Solar Energy (PHYS 4400) Reading assignment: Sections 9.4

More information

Thermal Analysis of Solar Flat Plate Collector Using CFD

Thermal Analysis of Solar Flat Plate Collector Using CFD Thermal Analysis of Solar Flat Plate Collector Using CFD 1 Mohammed Abdul Junaid, 2 Mohammed Nazimuddin, 3 Mohd Arifuddin, 4 Mohammed Faisal Asst. Prof, Mechanical Engg Dept. Lords Institute of Engg &

More information

Thermal Analysis of Solar Flat Plate Collector

Thermal Analysis of Solar Flat Plate Collector Thermal Analysis of Solar Flat Plate Collector # Yakoob Kolipak,Associate Professor, ME Dept, E-mail:yakoob.cjits @gmail.com # Kranthi Kumar Guduru,Assistant Professor,ME Dept, E-mail: kranthicjits1@gmail.com

More information

Simulation And Optimization of a Solar Absorption Cooling System Using Evacuated Tube Collectors

Simulation And Optimization of a Solar Absorption Cooling System Using Evacuated Tube Collectors Simulation And Optimization of a Solar Absorption Cooling System Using Evacuated Tube Collectors Jean Philippe Praene, Alain Bastide, Franck Lucas, François Garde and Harry Boyer Université de la Réunion,

More information

Medium temperature solar thermal collector with an internally integrated CPC

Medium temperature solar thermal collector with an internally integrated CPC Ahmad Mojiri Medium temperature solar thermal collector with an internally integrated CPC Ahmad Mojiri, Cameron Stanley, David Rodriguez-Sanchez and Gary Rosengarten RMIT University, 115 Queensberry St.,

More information

Solar Thermal Energy

Solar Thermal Energy Solar Thermal Energy Content Fundamentals of Solar Energy Introduction to Solar Thermal Systems Solar Collectors Power Systems from Solar Thermal Fundamentals of Solar Energy Solar energy is the energy

More information

Innovation in carbon-ammonia adsorption heat pump technology: a case study

Innovation in carbon-ammonia adsorption heat pump technology: a case study Innovation in carbon-ammonia adsorption heat pump technology: a case study Angeles Rivero Pacho 3 rd December 2015 Introduction The Carbon Plan and the Strategic Framework stated that meeting the 80% CO

More information

Heat Transfer Simulation to Determine the Impact of Al-5Mg Arc Sprayed Coating onto 7075 T6 Al Alloy Fatigue Performance

Heat Transfer Simulation to Determine the Impact of Al-5Mg Arc Sprayed Coating onto 7075 T6 Al Alloy Fatigue Performance 11 th International LS-DYNA Users Conference Simulation (5) Heat Transfer Simulation to Determine the Impact of Al-5Mg Arc Sprayed Coating onto 7075 T6 Al Alloy Fatigue Performance G. D Amours, B. Arsenault,

More information

Solar cooling plants: how to arrange solar collectors, absorption chillers and the load

Solar cooling plants: how to arrange solar collectors, absorption chillers and the load Solar cooling plants: how to arrange solar collectors, absorption chillers and the load Renato M. Lazzarin Dipartimento di Tecnica e Gestione dei Sistemi industriali, DTG Università di Padova (Italy) E-mail:

More information

Simulation of Solar Air-Conditioning System with Salinity Gradient Solar Pond

Simulation of Solar Air-Conditioning System with Salinity Gradient Solar Pond Available online at www.sciencedirect.com ScienceDirect Energy Procedia 79 (2015 ) 746 751 2015 International Conference on Alternative Energy in Developing Countries and Emerging Economies Simulation

More information

Solar Cooling Technologies for Southern Climates - A System Comparison

Solar Cooling Technologies for Southern Climates - A System Comparison Solar Cooling Technologies for Southern Climates - A System Comparison Dirk Pietruschka 1, Uli Jakob 2, Ursula Eicker 1 1 Centre of Applied Research Sustainable Energy Technology - zafh.net, Stuttgart

More information

Concentrated Solar Power

Concentrated Solar Power Professorship of Renewable Energy Carriers Institute of Energy Technology Concentrated Solar Power Martina Neises-von Puttkamer Department of Mechanical and Process Engineering, ETH Zurich 8092 Zurich,

More information

EU Renewable Energy Masters. SPECIALISATION SYLLABUS Solar thermal energy. Contents: TOTAL HOURS ECTS. 1. Fundamentals 60 6

EU Renewable Energy Masters. SPECIALISATION SYLLABUS Solar thermal energy. Contents: TOTAL HOURS ECTS. 1. Fundamentals 60 6 EU Renewable Energy Masters SPECIALISATION SYLLABUS Solar thermal energy Contents: TOTAL HOURS ECTS 1. Fundamentals 0. Simulation and system optimization 0. Energy 0. Materials 0. Project, case study and

More information

A Review of Solar Collectors in Solar Thermal Applications

A Review of Solar Collectors in Solar Thermal Applications A Review of Solar Collectors in Solar Thermal Applications Kartik Somalwar Department of Mechanical Engineering,G.H. Raisoni College of Engineering, Nagpur, India Abstract - Thermal applications are drawing

More information

An experimental investigation on the effect of ferrofluids on the efficiency of novel parabolic trough solar collector under laminar flow conditions

An experimental investigation on the effect of ferrofluids on the efficiency of novel parabolic trough solar collector under laminar flow conditions An experimental investigation on the effect of ferrofluids on the efficiency of novel parabolic trough solar collector under laminar flow conditions Mustafa Alsaady, Yuying Yan, Rabah Boukhanouf Faculty

More information

The Promise of Concentrating Solar Power Technology

The Promise of Concentrating Solar Power Technology The Promise of Concentrating Solar Power Technology a Mature and Utility-Scale Renewable Peaking Power Option Eckhard Lüpfert, Robert Pitz-Paal DLR Solar Research Division, Cologne Stuttgart Almería Concentrating

More information

Receivers for Solar Tower Systems

Receivers for Solar Tower Systems Receivers for Solar Tower Systems Prof. Dr. Bernhard Hoffschmidt June 25-27, 2014 Font Romeu, France CSP Characteristics η max = η th,carnot * η absorber Parabolic Dish Solar tower systems: higher concentration

More information

Performance evaluation of hybrid solar parabolic trough concentrator systems in Hong Kong

Performance evaluation of hybrid solar parabolic trough concentrator systems in Hong Kong Performance evaluation of hybrid solar parabolic trough concentrator systems in Hong Kong Huey Pang* 1, Edward W.C. Lo 1, TS Chung 1 and Josie Close 2 * 1 Department of Electrical Engineering, The Hong

More information

Technology for Process Heat Applications. and Solar Field Optimization

Technology for Process Heat Applications. and Solar Field Optimization Technology for Process Heat Applications and Solar Field Optimization erfis PARABOLIC TROUGH Technical Data Sheet Parabolic Trough Collector Design Solar Field Engineering Construction Erection Fields

More information

Energy Technology & Conservation. Week_05. Instructor: Mr. Adnan Qamar. Mechanical Engineering Department

Energy Technology & Conservation. Week_05. Instructor: Mr. Adnan Qamar. Mechanical Engineering Department 1 Energy Technology & Conservation Week_05 Instructor: Mr. Adnan Qamar Mechanical Engineering Department 2 Lecture Contents Solar Air Heaters Energy Efficient Buildings Crop Driers Space Cooling Water

More information

Design Optimization of a Non-evacuated CPC Collector

Design Optimization of a Non-evacuated CPC Collector Design Optimization of a Non-evacuated CPC Collector Dariush Zare a,*, Hossein Ebadi a a Biosystems Engineering Department, College of Agriculture, Shiraz University, Shiraz, Fars, Iran * Corresponding

More information

Solar thermal energy: A promising source for Energy Intensive Industries

Solar thermal energy: A promising source for Energy Intensive Industries Solar thermal energy: A promising source for Energy Intensive Industries Abhilash S G Lecturer, Department of Mechanical Engineering, University of Gondar, Ethiopia. Abstract: Sun is the basic source for

More information

Thermoacoustics for cold production

Thermoacoustics for cold production SPACE TRIPS SUMMER SCHOOL Space TRIPS Riga Latvia June 17-20, 2 0 1 4 Thermoacoustics for cold production Kees de Blok Aster Thermoacoustics 9 juni 2014 1 Introduction SUMMER SCHOOL ON: THERMO ACOUSTIC

More information

Smart Integration of Thermal Management Systems for Electronics Cooling

Smart Integration of Thermal Management Systems for Electronics Cooling Smart Integration of Thermal Management Systems for Electronics Cooling Dr. Ir. Wessel W. Wits, University of Twente, Faculty of Engineering Technology, Laboratory of Design, Production and Management,

More information

Development of a Diaphragm Stirling Cryocooler

Development of a Diaphragm Stirling Cryocooler 1 Development of a Diaphragm Stirling Cryocooler A. Caughley 1, M. Sellier 2, A. Tucker, M. Gschwendtner 3 1 Callaghan Innovation, Christchurch, New Zealand 2 University of Canterbury, Christchurch, New

More information

Components of building integrated solar collectors

Components of building integrated solar collectors Components of building integrated solar collectors István Fekete 1* and István Farkas 2 1 Department of Technical Engineering, College of Szolnok Tiszaligeti sétány 14., Szolnok, H-5000 Hungary Email:

More information

EXPERIMENTAL STUDY ON SOLAR HEATING BY NATURAL HEAT CONVECTION AND RADIATION

EXPERIMENTAL STUDY ON SOLAR HEATING BY NATURAL HEAT CONVECTION AND RADIATION International Journal of Recent Advances in Mechanical Engineering (IJMECH) Vol., No.3/, November 17 EXPERIMENTAL STUDY ON SOLAR HEATING BY NATURAL HEAT CONVECTION AND RADIATION SeifA. Ahmed Mechanical

More information

Performance Analysis of a Solar Powered Adsorption Cooling System

Performance Analysis of a Solar Powered Adsorption Cooling System Paper ID: ET-263 Performance Analysis of a Solar Powered Adsorption Cooling System Sai Yagnamurthy 1 Dibakar Rakshit *1 Sanjeev Jain 2 1 Centre for Energy Studies, Indian Institute of Technology, Delhi-110016,

More information

Energy Resources. Assosciate Professor

Energy Resources. Assosciate Professor Energy Resources Dr. Fahad Noor Engr. Adnan Qamar Assosciate Professor Lecturer f.noor@uet.edu.pk adnan@uet.edu.pk Lecture Contents Solar Air Heaters Energy Efficient Buildings Crop Driers Space Cooling

More information

Compound ejectors with improved off-design performance

Compound ejectors with improved off-design performance Compound ejectors with improved off-design performance Dr M. Dennis 1, Dr K. Garzoli 2 1,2 Centre for Sustainable Energy Systems School of Engineering The Australian National University Canberra, ACT 0200

More information

WATER COOLING OF PHOTOVOLTAIC PANELS FROM PASSIVE HOUSE LOCATED INSIDE THE UNIVERSITY POLITEHNICA OF BUCHAREST

WATER COOLING OF PHOTOVOLTAIC PANELS FROM PASSIVE HOUSE LOCATED INSIDE THE UNIVERSITY POLITEHNICA OF BUCHAREST U.P.B. Sci. Bull., Series C, Vol. 75, Iss. 3, 2013 ISSN 2286-3540 WATER COOLING OF PHOTOVOLTAIC PANELS FROM PASSIVE HOUSE LOCATED INSIDE THE UNIVERSITY POLITEHNICA OF BUCHAREST Ana-Maria CROITORU 1, Adrian

More information

Dimensioning a small-sized PTC solar field for heating and cooling of a hotel in Almería (Spain)

Dimensioning a small-sized PTC solar field for heating and cooling of a hotel in Almería (Spain) Available online at www.sciencedirect.com Energy Procedia 30 (2012 ) 967 973 SHC 2012 Dimensioning a small-sized PTC solar field for heating and cooling of a hotel in Almería (Spain) Manuel Quirante a,

More information

Design and Analysis of Hydraulic Oil Cooler by Application of Heat Pipe

Design and Analysis of Hydraulic Oil Cooler by Application of Heat Pipe Design and Analysis of Hydraulic Oil Cooler by Application of Heat Pipe Abstract Heat pipe is an essentially passive heat transfer device having high thermal conductivity. In hydraulic power pack use of

More information

Characteristics of a VM Type Thermal Compressor for Driving a Pulse Tube Cooler

Characteristics of a VM Type Thermal Compressor for Driving a Pulse Tube Cooler 300 1 Characteristics of a VM Type Thermal Compressor for Driving a Pulse Tube Cooler W.Dai 1, X.Wang 1, Y.Zhao 1,2, E.Luo 1, Y.Zhou 1 1 Key Laboratory of Cryogenics, Technical Institute of Physics and

More information

Analysis of Solar Thermal Cooling System Using TRANSOL

Analysis of Solar Thermal Cooling System Using TRANSOL RESEARCH ARTICLE New Frontier in Energy, Engineering, Environment & Science ( NFEEES-2018 ) Feb - 2018 Analysis of Solar Thermal Cooling System Using TRANSOL Khagendra Kumar Upman*, Deepak Goyal, Dhawal

More information

Photoetched Regenerator for Use in a High Frequency Pulse Tube

Photoetched Regenerator for Use in a High Frequency Pulse Tube Photoetched Regenerator for Use in a High Frequency Pulse Tube W.F. Superczynski, G.F. Green Chesapeake Cryogenics, Inc. Arnold, MD 21012 ABSTRACT To produce refrigeration at 20 K in a single stage regenerative

More information

Southwest Solar Technologies, Inc. ASSETS FOR COLLABORATION IN CONCENTRATING SOLAR Herb Hayden, CTO

Southwest Solar Technologies, Inc. ASSETS FOR COLLABORATION IN CONCENTRATING SOLAR Herb Hayden, CTO Southwest Solar Technologies, Inc. ASSETS FOR COLLABORATION IN CONCENTRATING SOLAR Herb Hayden, CTO Southwest Solar Technologies Phoenix-based technology company developing efficient, no-water-use solar

More information

Effect of Distance between Double Glazing on the Performance of a Solar Thermal Collector Control

Effect of Distance between Double Glazing on the Performance of a Solar Thermal Collector Control Journal of Mechanics Engineering and Automation 5 (215) 161-166 doi: 117265/2159-5275/21534 D DAVID PUBLISHING Effect of Distance between Double Glazing on the Performance of a Solar Thermal Collector

More information

Available online Journal of Scientific and Engineering Research, 2017, 4(1): Research Article

Available online   Journal of Scientific and Engineering Research, 2017, 4(1): Research Article Available online www.jsaer.com, 2017, 4(1):105-109 Research Article SSN: 2394-2630 CODEN(USA): JSERBR Design and Testing Parabolic Trough Solar Collector S. Abdelhady, M. Shaban, M. Fathy, A. Ahmed Aswan

More information

Solar Thermal Conversion

Solar Thermal Conversion Solar Thermal Conversion Major Functions: Solar Radiation collection and concentration Conversion to heat Storage of energy Generation of electricity Use of waste heat in refrigeration and air-conditioning

More information

Technical Guide to Solar Thermal. Better World Energy. How to harness the sun s energy and create hot water with a Solar Thermal System

Technical Guide to Solar Thermal. Better World Energy. How to harness the sun s energy and create hot water with a Solar Thermal System Technical Guide to Solar Thermal Better World Energy How to harness the sun s energy and create hot water with a Solar Thermal System Introducing Ritter XL Solar Ritter XL Solar Thermal Systems have been

More information

IMPROVED ENERGY DELIVERY FOR SELECTIVE LASER SINTERING Carl Deckard and David Miller Clemson University Clemson, SC ABSTRACT INTRODUCTION

IMPROVED ENERGY DELIVERY FOR SELECTIVE LASER SINTERING Carl Deckard and David Miller Clemson University Clemson, SC ABSTRACT INTRODUCTION IMPROVED ENERGY DELIVERY FOR SELECTIVE LASER SINTERING Carl Deckard and David Miller Clemson University Clemson, SC 29634 ABSTRACT Selective Laser Sintering (SLS) is a leadingtechnology in the important

More information

Future Solar Fuels H 2, Syngas, and Jet Fuels

Future Solar Fuels H 2, Syngas, and Jet Fuels FFF Hybrid Conference on Solar Fuels and High Temperature Solar Applications Johannesburg, South Africa, August 20-21, 2014 Future Solar Fuels H 2, Syngas, and Jet Fuels Dr Anton Meier Solar Technology

More information

Optimized front-end cooling module with COOL3D

Optimized front-end cooling module with COOL3D Optimized front-end cooling module with COOL3D French GT Conference 2017 Wednesday, May 17 LECLERCQ Cyril CHARDEL Fabrice AGENDA o Context & motivation o GT-SUITE evaluation plan o COOL3D approach for

More information

Development of a thermoacoustic travelling-wave refrigerator

Development of a thermoacoustic travelling-wave refrigerator Development of a thermoacoustic travelling-wave refrigerator Matthieu Pierens, Jean-Pierre Thermeau, Thierry Le Pollès, Patxi Duthil To cite this version: Matthieu Pierens, Jean-Pierre Thermeau, Thierry

More information

Performance Testing of A Parabolic Trough Collector Array

Performance Testing of A Parabolic Trough Collector Array Performance Testing of A Parabolic Trough Collector Array İbrahim Halil Yılmaz *, Hakan Hayta, Recep Yumrutaş, Mehmet Sait Söylemez Department of Mechanical Engineering University of Gaziantep, 27310 Gaziantep,

More information

Passive Thermal Control for Window Insulation

Passive Thermal Control for Window Insulation Passive Thermal Control for Window Insulation E. Konroyd-Bolden 1, Dr. Z. Liao 1, 1 Ryerson University; Dept. of Architectural Science *Corresponding Author: 392 Pine Avenue, Unit 602, Oakville, Ontario,

More information

Spray cooling of IGBT electronic power modules

Spray cooling of IGBT electronic power modules Thermal Challenges in Next Generation Electronic Systems, Joshi & Garimella (eds) 2002 Millpress, Rotterdam, ISBN 90-77017-03-8 G. Mitic, W. Kiffe, G. Lefranc, S. Ramminger Siemens AG, Corporate Technology

More information

Solar Cooling for Southern Climates, Double Effect Absorption Chillers with High Concentrating Collectors Versus Standard Single Effect Systems

Solar Cooling for Southern Climates, Double Effect Absorption Chillers with High Concentrating Collectors Versus Standard Single Effect Systems Solar Cooling for Southern Climates, Double Effect Absorption Chillers with High Concentrating Collectors Versus Standard Single Effect Systems Dirk Pietruschka 1, Uli Jakob 2, Ursula Eicker 1 1 Centre

More information

POWER MANAGEMENT OF THERMOELECTRIC GENERATOR IN A PARABOLIC DISH SOLAR COLLECTOR

POWER MANAGEMENT OF THERMOELECTRIC GENERATOR IN A PARABOLIC DISH SOLAR COLLECTOR International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 6, June 2018, pp. 849 855, Article ID: IJMET_09_06_095 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=6

More information

Development of an Innovative 2.5 kw Water- Silica Gel Adsorption Chiller

Development of an Innovative 2.5 kw Water- Silica Gel Adsorption Chiller Development of an Innovative 2.5 kw Water- Silica Gel Adsorption Chiller E.-J. Bakker R. de Boer S. Smeding N. Sijpheer M. van der Pal September 2013 ECN-B--13-011 DEVELOPMENT OF AN INNOVATIVE 2.5 kw WATER-SILICA

More information

EFFECTIVE UTILIZATION OF PARABOLIC DISH SOLAR COLLECTORS FOR THE HEATING AND THERMO-ELECTRIC POWER GENERATION

EFFECTIVE UTILIZATION OF PARABOLIC DISH SOLAR COLLECTORS FOR THE HEATING AND THERMO-ELECTRIC POWER GENERATION International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 2, February 2018, pp. 657 662, Article ID: IJMET_09_02_067 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=2

More information

AR No. # - Solar Thermal

AR No. # - Solar Thermal AR No. # - Solar Thermal Recommendation We recommend installing a solar thermal array on the building roof. This will provide an alternative source for 10% of the facilities energy consumption and reduce

More information

EXPERIMENTAL STUDY ON A HIGH CONCENTRATION PHOTOVOLTAIC/THERMAL SYSTEM WITH PLANE MIRRORS ARRAY

EXPERIMENTAL STUDY ON A HIGH CONCENTRATION PHOTOVOLTAIC/THERMAL SYSTEM WITH PLANE MIRRORS ARRAY S517 EXPERIMENTAL STUDY ON A HIGH CONCENTRATION PHOTOVOLTAIC/THERMAL SYSTEM WITH PLANE MIRRORS ARRAY by Haifei CHEN a, Jie YANG a,*, Jie JI b,*, Wenzhu HUANG b, Gang PEI b, and Yang ZHANG c a School of

More information

SOLAR CONCENTRATORS IN HEAT BALANCE OF THE BUILDING

SOLAR CONCENTRATORS IN HEAT BALANCE OF THE BUILDING MOTROL. COMMISSION OF MOTORIZATION AND ENERGETICS IN AGRICULTURE 2014, Vol. 16, No. 5, 99 104 SOLAR CONCENTRATORS IN HEAT BALANCE OF THE BUILDING Tetiana Denysova National Academy of Nature Protection

More information

EXERGY LOSS ANALYSIS OF THE REGENERATOR IN A SOLAR STIRLING ENGINE

EXERGY LOSS ANALYSIS OF THE REGENERATOR IN A SOLAR STIRLING ENGINE S729 EXERGY LOSS ANALYSIS OF THE REGENERATOR IN A SOLAR STIRLING ENGINE by Wenlian YE a, b, Zhe YANG a, and Yingwen LIU a* a Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy

More information

Development and performance analysis of a hybrid solar gas turbine. Lars-Uno Axelsson and Darsini Kathirgamanathan, OPRA Turbines, the Netherlands

Development and performance analysis of a hybrid solar gas turbine. Lars-Uno Axelsson and Darsini Kathirgamanathan, OPRA Turbines, the Netherlands Development and performance analysis of a hybrid solar gas turbine Lars-Uno Axelsson and Darsini Kathirgamanathan, OPRA Turbines, the Netherlands With the increased amount of non-controllable renewables

More information

Heat Exchanger activities at TWI SOLEGLASS Project Overview All glass Mid temperature Direct flow thermal solar vacuum tube

Heat Exchanger activities at TWI SOLEGLASS Project Overview All glass Mid temperature Direct flow thermal solar vacuum tube Heat Exchanger activities at TWI SOLEGLASS Project Overview All glass Mid temperature Direct flow thermal solar vacuum tube Maxime Mrovcak 20 th May 2014 Project Context Solar Thermal systems are rapidly

More information

ANALYSIS AND MITIGATION OF THERMAL EFFECTS ON A LARGE FACADE-MOUNTED PV ARRAY

ANALYSIS AND MITIGATION OF THERMAL EFFECTS ON A LARGE FACADE-MOUNTED PV ARRAY ANALYSIS AND MITIGATION OF THERMAL EFFECTS ON A LARGE FACADE-MOUNTED PV ARRAY A. Driesse 1, S. J. Harrison 2, Q. Lin 2 1 Queen's University, Integrated Learning Center, Kingston, ON, Canada; 2 Queen's

More information

Design and Analysis of a Solar Refrigeration System with a Rotating Generator

Design and Analysis of a Solar Refrigeration System with a Rotating Generator Design and Analysis of a Solar Refrigeration System with a Rotating Generator K. Bouhadef, S. Chikh, A. Boumedien, and A. Benabdesselam Abstract A solar refrigeration system based on the adsorptiondesorption

More information

Available online at ScienceDirect. Procedia Engineering 121 (2015 )

Available online at  ScienceDirect. Procedia Engineering 121 (2015 ) Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 121 (2015 ) 1413 1419 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International

More information

S O L A R C O OL I N G F O R A S U S T A I N A B L E EN E R G Y F U T U R E MARA MORBIN ITALY

S O L A R C O OL I N G F O R A S U S T A I N A B L E EN E R G Y F U T U R E MARA MORBIN ITALY S O L A R C O OL I N G F O R A S U S T A I N A B L E EN E R G Y F U T U R E MARA MORBIN ITALY 1 THE PROBLEM For several years, in industrial countries, the demand for air conditioning in Summer has been

More information

SorTech package solution description

SorTech package solution description SorTech package solution description Version 2.0 Edited by: Jörg Rupp Lotta Koch, Edo Wiemken, Björn Nienborg Freiburg, 06.10.2009 Table of Contents 1 Introduction... 3 2 The Chiller... 4 3 System s Components...

More information

Evaluation of an Organic Rankine Cycle Using a Non-Imaging Solar Concentrator for Different Working Fluids

Evaluation of an Organic Rankine Cycle Using a Non-Imaging Solar Concentrator for Different Working Fluids Evaluation of an Organic Rankine Cycle Using a Non-Imaging Solar Concentrator for Different Working Fluids * 1 Abid Ustaoglu, 2 Junnosuke Okajima, 3 Xin-Rong Zhang, 2 Shigenao Maruyama 1 Engineering Department,

More information

Supplementary Figure 1 Optical properties of the DLS. (a) The transmittance of water and

Supplementary Figure 1 Optical properties of the DLS. (a) The transmittance of water and Supplementary Figure 1 Optical properties of the DLS. (a) The transmittance of water and the DLS in the wavelength range of 300-1500 nm (b) the reflectance of the DLS structure in the wavelength range

More information

SOLAR VACUUM MEMBRANE DISTILLATION FOR SEA WATER DESALINATION. Slimane GABSI,

SOLAR VACUUM MEMBRANE DISTILLATION FOR SEA WATER DESALINATION. Slimane GABSI, SOLAR VACUUM MEMBRANE DISTILLATION FOR SEA WATER DESALINATION Slimane GABSI, Nader FRIKHA, Béchir CHAOUACHI Unit of research: Environment, Catalysis & Processes Analysis National School of Engineers Gabès,

More information

Solar Flat Plate Thermal Collector

Solar Flat Plate Thermal Collector Solar Flat Plate Thermal Collector 1 OBJECTIVE: Performance Study of Solar Flat Plate Thermal Collector Operation with Variation in Mass Flow Rate and Level of Radiation INTRODUCTION: Solar water heater

More information

ASI funded Solar Thermal Storage and Steam Programs at the CSIRO and ANU

ASI funded Solar Thermal Storage and Steam Programs at the CSIRO and ANU ASI funded Solar Thermal Storage and Steam Programs at the CSIRO and ANU R. McNaughton 1, R. Benito 1, G Burgess 2, G.J. Duffy 1, J.H. Edwards 1, J.S. Kim 1, K Lovegrove 2, J Pye 2, and W. Stein 1 1 CSIRO

More information

Observation of Liquid-filled Window without Presence of Liquid in Test Chamber

Observation of Liquid-filled Window without Presence of Liquid in Test Chamber SSP - JOURNAL OF CIVIL ENGINEERING Vol. 11, Issue 2, 2016 DOI: 10.1515/sspjce-2016-0020 Observation of Liquid-filled Window without Presence of Liquid in Test Chamber Ján Lojkovics Technical University

More information

CHAM Case Study Heat Transfer. within a Solar Panel

CHAM Case Study Heat Transfer. within a Solar Panel CHAM Limited Pioneering CFD Software for Education & Industry CHAM Case Study Heat Transfer within a Solar Panel PHOENICS demonstration PHOENICS has been applied to the simulation of heat transfer within

More information

SOLAR ENGINEERING OF THERMAL PROCESSES

SOLAR ENGINEERING OF THERMAL PROCESSES SOLAR ENGINEERING OF THERMAL PROCESSES Second Edition JOHN A. DUFFIE Emeritus Professor of Chemical Engineering WILLIAM A. BECKMAN Professor of Mechanical Engineering Solar Energy Laboratory University

More information

High temperature gas heat pumps to recover industrial waste heat

High temperature gas heat pumps to recover industrial waste heat High temperature gas heat pumps to recover industrial waste heat Authors Duclos, Julien, GDF SUEZ, Saint Denis La Plaine, France Gosselin, Dominique, GDF SUEZ, Saint Denis La Plaine, France Buchet, Philippe,

More information

THERMAL ANALYSIS OF A FACADE-MOUNTED PV ARRAY

THERMAL ANALYSIS OF A FACADE-MOUNTED PV ARRAY SESCI 23 CONFERENCE Queen's University Kingston, Ontario, Canada August 18 to 2, 23 THERMAL ANALYSIS OF A FACADE-MOUNTED PV ARRAY S. J. Harrison 1, A. Driesse 2, Q. Lin 1 1 Queen's University, Solar Calorimetry

More information

Design Progress and Analysis for ITER Thermal Shield

Design Progress and Analysis for ITER Thermal Shield 1 IT/P7-21 Design Progress and Analysis for ITER Thermal Shield W. Chung 1), K. W. Nam 1), C. H. Noh 1), B. C. Kim 1), J. W. Sa 1), Y. Utin 2), K. Ioki 2), N. I. Her 2), J. Yu 2), H. J. Ahn 1), K. J. Jung

More information

The Novel Solar Water Heating by Means of Thermoelectric Modules

The Novel Solar Water Heating by Means of Thermoelectric Modules International Journal of Renewable Energy, Vol. 3, No. 2, July 2008 The Novel Solar Water Heating by Means of Thermoelectric Modules Somchai Maneewan a*, Sirinuch Chindaruksa a and Jompob Waewsak b a Physics

More information

ISSN: ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 4, Issue 3, September 2014

ISSN: ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 4, Issue 3, September 2014 Evaluation of the Thermal Performance of a Thermo Syphon Water Heating System Using a Compound Parabolic Solar Collector Okoronkwo C.A, Nwufo, O.C, Ogueke, N.V, Nwaigwe, K.N, Anyanwu E.E Department of

More information

Available online at ScienceDirect. Energy Procedia 49 (2014 ) SolarPACES 2013

Available online at   ScienceDirect. Energy Procedia 49 (2014 ) SolarPACES 2013 Available online at www.sciencedirect.com ScienceDirect Energy Procedia 49 (2014 ) 1147 1156 SolarPACES 2013 Simulation of a hybrid solar gas-turbine cycle with storage integration B. Grange a, C. Dalet

More information

Customized Absorption Heat Pumps for Utilization of Low-Grade Heat Sources

Customized Absorption Heat Pumps for Utilization of Low-Grade Heat Sources Customized Absorption Heat Pumps for Utilization of Low-Grade Heat Sources Christian Keil, Stefan Plura, Michael Radspieler, Christian Schweigler ZAE Bayern, Bavarian Center for Applied Energy Research

More information

An Experimental and CFD Analysis of CuO-H 2 O (DI) Nanofluid Based Parabolic Solar Collector

An Experimental and CFD Analysis of CuO-H 2 O (DI) Nanofluid Based Parabolic Solar Collector An Experimental and CFD Analysis of CuO-H 2 O (DI) Nanofluid Based Parabolic Solar Collector Ketan Ajay 1, Kundan Lal 2 1,2 ( Mechanical Engineering Department, Thapar University, India) Abstract : Parabolic

More information

Performance Evaluation of an Integrated Hybrid Photovoltaic/Thermal (PV/T) Greenhouse

Performance Evaluation of an Integrated Hybrid Photovoltaic/Thermal (PV/T) Greenhouse 12 EAAS & ARF. All rights reserved Performance Evaluation of an Integrated Hybrid Photovoltaic/Thermal (PV/T) Greenhouse Shahana Parveen 1, Dr. Qamar Parvez Rana 2 Jamia Hamdard, India Shahanaparveen_amu@gmail.com

More information

5 / KWh Electricity from Concentrated Solar Power (CSP) Finally a Reality

5 / KWh Electricity from Concentrated Solar Power (CSP) Finally a Reality 5 / KWh Electricity from Concentrated Solar Power (CSP) Finally a Reality The Renewable Energy industry has been projecting lower cost per KWh of electricity from CSP for many decades. Although steady

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

SOLAR COOLING: STATE OF THE ART, TECHNICAL ANALYSIS AND FIRSTS APPLICATIONS

SOLAR COOLING: STATE OF THE ART, TECHNICAL ANALYSIS AND FIRSTS APPLICATIONS SOLAR COOLING: STATE OF THE ART, TECHNICAL ANALYSIS AND FIRSTS APPLICATIONS F. Asdrubali, G. Baldinelli, A. Presciutti, M. Caporali University of Perugia - Industrial Engineering Department, Via G. Duranti

More information

Thermoacoustic heat pumps for energy savings

Thermoacoustic heat pumps for energy savings ECN-RX--05-159 Thermoacoustic heat pumps for energy savings S. Spoelstra M.E.H. Tijani Presented at the seminar "Boundary crossing acoustics" of the Acoustical Society of the Netherlands on 23 November

More information

PERFORMANCE ANALYSIS OF PARABOLIC TROUGH SOLAR COLLECTOR FOR THREE DIFFERENT FLOW RATES

PERFORMANCE ANALYSIS OF PARABOLIC TROUGH SOLAR COLLECTOR FOR THREE DIFFERENT FLOW RATES PERFORMANCE ANALYSIS OF PARABOLIC TROUGH SOLAR COLLECTOR FOR THREE DIFFERENT FLOW RATES Anil Kumar 1, Kanhaiya Saw 2, Shabbir Ali 3 1,2,3 M.Tech student, Department of Mechanical, Indian School of Mines,

More information

[Patidar, 8(2) April-June. 2018] ISSN: Impact Factor: 5.085

[Patidar, 8(2) April-June. 2018] ISSN: Impact Factor: 5.085 INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & MANAGEMENT DESIGN AND FABRICATION OF SOLAR PARABOLIC TROUGH & ANALYSIS OF DIFFERENT TYPE OF MATERIAL USING FOR STEAM GENERATION Jitendra Patidar 1 Ranu Rajoria

More information

Héctor Rubio Plana Gas Natural, SDG S.A. 18th. June 2009

Héctor Rubio Plana Gas Natural, SDG S.A. 18th. June 2009 1 Héctor Rubio Plana Gas Natural, SDG S.A. 18th. June 2009 Table of contents 1. Introduction 2. How does it work? 3. Experiences 4. Conclusions and future scenario 5. Future previsions 2 3 Solar Cooling

More information