两种不同结构的光伏光热一体化系统的性能分析

The analysis on the performance of the photovoltaic/thermal system with two different kinds of structures

文章对光伏光热一体化热泵(PV/T-HP)系统和光伏光热一体化热管(HP-PV/T)系统进行了对比实验,并分析了这两种PV/T系统的热水温度、光热转化效率、光电转化效率、光伏电池板温度、火用效率以及一次能源节约效率等参数。研究结果表明:PV/T-HP系统的光热转化效率、光电转化效率相对较高;通过火用效率分析可知,以节约用电或发电为主要目的时,宜采用HP-PV/T系统;通过一次能源节约效率分析可知,PV/T-HP系统节约化石能源的能力要优于HP-PV/T系统,并且以供热为主要目的且需热量较大时,适宜采用PV/T-HP系统。

This article conducts the comparative trial for the photovoltaic/thermal integrated heat pump （PV/T-HP） system and the photovohaic/thermal heat pipe （HP-PV/T） system, analyzes the parameters of hot water temperature, thermal efficiency, photoelectric efficiency, temperature of PV, exergy efficiency and primary energy saving efficiency for the system of these two kinds of PVYF. The result of the research shows that the PV/T-HP system is more efficient in terms of thermal efficiency and photoelectric efficiency. At the same time, the exergy efficiency analysis shows that in the case of the main purpose of power saving or generating electricity, it is suitable for HP-PV/T system. Through the analysis of primary energy saving efficiency, it can be known that the PV/T-HP system in the role of fossil energy saving is more efficiency than the HP-PV/T system and in the case of heating as the main purpose, it is appropriate to use PVYF-HP system.