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Comparison Study of a Novel Tank PV/T Hot Water System and a Heat Pipe PV/T System

Journal of Thermal Science 2022年第6期31卷 2009-2021页

作者： XIE Yujie simbamba mzee mohamed CAO Xiaoling SUN Liangliang ZHOU Jinzhi YUAN Yanping School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China

A novel tank-Photovoltaic-thermal(PV/T) system is presented in this paper, and its energy performance has been compared with a traditional heat pipe PV/T system. The novel tank PV/T system combines photovoltaic cell, heat absorbing plate and hot-water storage tank which expands the heat exchange area, shortens the heat transfer path and saves the module installation space. A prototype system is constructed and tested in a cold weather condition and then compared with a heat pipe PVT system. The experimental results indicate that during the 10 days’ testing, the electrical, thermal and overall efficiency of the tank PV/T system ranges from 14.3% to 15.6%, 38.6% to 43.8% and 53.1% to 58.1%, respectively, while the heat pipe PVT system ranges from 10.9% to 12.2%, 39.3% to 41.2% and 50.5% to 53.4%, respectively. Based on these data, the electrical and thermal efficiency curve of the system with the novel tank-PVT system and heat pipe PVT system were generated. According to the comparison result, it shows that the novel tank-PVT system has a better thermal and electrical efficiency. This system provides a new design method for the development of the PV/T systems, which has a potential for PV/T systems building integration in the future.

关键词： tank PV/T heat pipe thermal and electrical efficiency instantaneous efficiency

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