System analysis of a multifunctional PV/T hybrid solar window |
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| Authors: | Henrik Davidsson Bengt Perers Björn Karlsson |
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| Affiliation: | 1. Department of Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea;2. Division of Construction Engineering and Management, Purdue University, West Lafayette, IN 47907, United States;1. Building, Energy and Environment Group, International Center for Numerical Methods in Engineering (CIMNE), 08224 Terrassa, Spain;2. Barcelona Supercomputing Center (BSC-CNS), 08034 Barcelona, Spain;3. Applied Physics Section of the Higher Polytechnic School (EPS), University of Lleida, Jaume II 69, 25001 Lleida, Spain;1. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;2. Department of Architectural Engineering, Yonsei University, Seoul, 03722, Republic of Korea;3. Republic of Korea Marine Corps, P.O. Box # 202-8, Yeonpyeong, Ongjin, Incheon, 23108, Republic of Korea;1. Department of Built Environment and Energy Utilization Engineering, Taiyuan University of Technology, Taiyuan, China;2. Solar Energy Department, National Research Centre, Dokki, Giza, Egypt;3. School of the Built Environment, Heriot-Watt University, Dubai, United Arab Emirates |
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| Abstract: | The work presented in this article aims to investigate a PV/T hybrid solar window on a system level. A PV/T hybrid is an absorber on which solar cells have been laminated. The solar window is a PV/T hybrid collector with tiltable insulated reflectors integrated into a window. It simultaneously replaces thermal collectors, PV-modules and sunshade. The building integration lowers the total price of the construction since the collector utilizes the frame and the glazing in the window. When it is placed in the window a complex interaction takes place. On the positive side is the reduction of the thermal losses due to the insulated reflectors. On the negative side is the blocking of solar radiation that would otherwise heat the building passively. This limits the performance of the solar window since a photon can only be used once. To investigate the sum of such complex interaction a system analysis has to be performed. In this paper results are presented from such a system analysis showing both benefits and problems with the product. The building system with individual solar energy components, i.e. solar collector and PV modules, of the same size as the solar window, uses 1100 kW h less auxiliary energy than the system with a solar window. However, the solar window system uses 600 kW h less auxiliary energy than a system with no solar collector. |
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