太陽能光伏光熱一體化系統運行實驗研究

摘要：【中文摘要】 太陽能光伏光熱一體化系統(hybrid photovoltaic-thermal solar system-PVT系統)作為一種利用太陽能同時獲得電收益和熱收益的新型能源利用方式,近年來受到學者的廣泛關注。本文搭建了PVT系統電、熱性能綜合實驗臺,通過全天實驗,分別研究和分析了系統的溫度特性與相對電效率的關系。結果表明,在日照條件較好,系統循環水溫較低的情況下,PVT系統的電效率與普通光伏電池相比可以提高約7%。同時,文章還分析了PVT系統內水的溫度一天內的變化情況,提出了在午后太陽輻射強度逐漸減弱,環境溫度逐漸升高時如何保持PVT系統較高電效率的方法。 【英文摘要】 A new type of energy utilization way called hybrid photovoltaic-thermal solar system(PVT system),which can convert solar energy into both power and thermal energy at the same time,becomes much more popular recently.In view of this point,a hybrid experimental system for power and thermal performance of PVT is established in this paper,the relation between temperatures and relatively power efficiency is studied experimentally.The results indicate that,the PVT system can improve the power efficiency by 7% relatively under better condition of sun radiation and a lower temperature of circulating water.Meanwhile,the change of the water temperature in PVT system is analyzed and a method of how to keep a high level of power efficiency is proposed under a lower solar radiation and higher environmental temperature. 【中文關鍵詞】 太陽能; 光伏光熱一體化系統; 實驗研究; 熱電收益【英文關鍵詞】 solar energy; PVT system; experimental study; power benefits