期刊
RENEWABLE ENERGY
卷 211, 期 -, 页码 87-99出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2023.04.064
关键词
Concentrated photoVoltaic thermal system; Computational fluid dynamics; Solar energy; Solar cells; Receiver; Heat sink
This paper presents the optimization process of a low-cost custom concentrated photovoltaic thermal (CPV-T) receiver for a parabolic trough collector using silicon solar cells. The heat sink tube geometries were redesigned and tested, showing significant improvement in the overall heat transfer coefficient. The study provides technical support for solar co-generation.
Solar co-generation, i.e., the generation of electricity and heat in a single device by concentrating the sunbeams, has the potential to significantly increase the overall system performance. The main challenge is related to the cooling of solar cells. In order to do so, it is essential to reduce the thermal resistance between the cell and heat transfer fluid. This paper features the optimization procedure of a low-cost custom concentrated photovoltaic thermal (CPV-T) receiver for a parabolic trough collector using silicon solar cells. A finite volume model for the thermal process has been developed. Hence, a fluid dynamic thermal simulation of the receiver is presented. The optimized heat sink tube geometries have been manufactured and tested in a lab environment, allowing for a comparison between modelling and experimental test results. Three possible heat sink geometries have been designed and compared regarding their overall heat transfer coefficient with respect to the non-dimensional pumping power, i.e. the ratio between the overall transferred heat and the energy required for pumping. The overall heat transfer coefficient for a finned heat sink has been increased up to 60% with respect to a baseline case without fins under similar conditions.
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