太阳能光电–热一体化与热泵耦合系统的热力性能实验研究  

Experimental Study of Thermal Performances of the Sloar Photovoltaic-thermal Hybrid and Heat Pump Coupled Systems

作　　者：吴兴应[1] 龚光彩[2] 王晨光[2] 

机构地区：[1]湖南城市学院市政与测绘工程学院,湖南省益阳市413000 [2]湖南大学土木工程学院,湖南省长沙市410082

出　　处：《中国电机工程学报》2015年第4期913-921,共9页Proceedings of the CSEE

基　　金：湖南省教育厅项目(13C111);益阳市科技局计划项目(2012JZ49)~~

摘　　要：太阳能光电?热一体化(solar photovoltaic-thermal hybrid,PV-T)系统产生的热水的温度通常达不到生活所需的水温,如果和热泵联合工作,则可以提供较高温度的热水,系统的实用性明显提高。理论上在PV-T提供的热能与热泵吸收的热能相等时,PV-T与热泵能很好的匹配耦合,在此基础上建立了PV-T与热泵耦合的热力分析模型。结合热管式PV-T系统实验装置和热泵实验装置进行测试的实验数据,对该耦合系统的热力性能进行分析,基于两种不同算法,得出了匹配情况下PV-T耦合热泵系统的COP,实验还得出PV-T系统的火用效率为0.08左右,热泵的火用效率为0.38左右,匹配情况下耦合系统的火用效率为0.05左右,该PV-T耦合热泵系统有较好的节能效果。文中对系统提出了节能建议。该研究结果为PV-T与热泵耦合工作的应用及其系统参数的选用提供理论依据。Temperature of the hot water produced by solar photovoltaic-thermal hybrid（PV-T） system usually can not reach the required hot water temperature of daily life. Working with heat pump, the PV-T system can provide hot water with higher temperature and the practicability of this system will be improved significantly. When the heat energy produced by the PV-T system is equal to that absorbed by the heat pump, the PV-T and heat pump coupled systems can achieve a very good match in theory. Based on this condition, a theoretical model of the coupled systems was established. The thermal performance was tested and analyzed according to the experimental data obtained from the PV-T and heat pump equipments. COP of the coupled systems under matching condition was concluded by two different algorithms. The exergy efficiency of the PV-T system and heat pump were about 0.08 and 0.38, respectively. The exergy efficiency of the coupled systems was about 0.05 under matching condition, which implied that the coupled systems had a significant energy-saving potential. Some energy-saving suggestions were also put forward. Our results provided a theoretical basis for application and parameters selecting of the coupled systems.

关 键 词：太阳能光电-热一体化(PV-T) 热泵 光电效率 热能效率 [火用]效率 

分 类 号：TK513[动力工程及工程热物理—热能工程]