摘要
为降低系统运行能耗和提高出口热水可利用性,提出一种新型采用定容式冷却的低倍聚光光伏/光热(PVT)系统。于南京选择一晴朗天气,在进水温度为20℃和出水温度为40℃的条件下,进行室外实验。实验结果表明该系统的热效率可达39.4%,电效率可达14.1%。同时,还采用有限容积法对该系统进行建模,以实验当天的环境数据为基础对系统热性能和电性能进行模拟,模拟结果与实验吻合良好,为进一步优化该系统打下基础。
A novel low concentration photovoltaic/thermal system with constant-volume cooling was proposed. The outdoor experiment, carried out in Nanjing, showed that the thermal efficiency could approach to 39. 4%, while the electrical efficiency could approach to 14. 1%. Applying the finite-difference method, a model of this system was also derived in the paper. Based on the measured environment data, the performance of this system was simulated and validated by the experiment data.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第9期1638-1643,共6页
Acta Energiae Solaris Sinica
关键词
光伏
光热系统
效率
定容冷却
PVT集热器
photovoltaic/thermal system
efficiency
constant-volume cooling
PVT collector
