Investigation on the annual thermal performance of a photovoltaic wall mounted on a multi-layer façade
Investigation on the annual thermal performance of a photovoltaic wall mounted on a multi-layer façade
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DOI：
10.1016/j.apenergy.2012.12.026
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发表时间：
2013-12
期刊：
影响因子：
11.2
通讯作者：
Jinqing Peng;Lin Lu;Hongxing Yang;Jun Han
中科院分区：
文献类型：
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作者：
Jinqing Peng;Lin Lu;Hongxing Yang;Jun Han
本文研究了安装在多层外墙上的光伏墙（PV墙）的全年热性能。基于已发展的光伏墙体和普通墙体的非稳态传热模型，对两种墙体的全年热性能进行了模拟。与普通墙相比，在香港的天气条件下，朝南的光伏墙在夏季可以减少51%的热量。首次研究了光伏墙对冬季围护结构得热和热损失的影响，结果表明，光伏墙不仅可以显著减少白天围护结构得热，而且可以减少夜间围护结构的热损失。与普通墙体相比，冬季光伏墙体的得热量和损失热量分别减少了69%和32%。总的来说，通过将每平方米朝南的普通墙替换为光伏墙，实现了每年减少52.1 kW h的热能消耗，相当于为建筑物中的空调系统节省18.6 kW h的电能。还讨论了风道厚度对光伏墙热性能的影响。
This paper studied the annual thermal performance of a photovoltaic wall (PV wall) mounted on a multi-layer façade. Based on some developed unsteady-state heat transfer models for a PV wall and a normal wall, the annual thermal performance of two types of walls was simulated. Compared with a normal wall, the south-facing PV wall could reduce heat gain through the envelope by 51% in summer under Hong Kong weather conditions. The impact of the PV wall on the envelope’s heat gain and heat loss in winter was investigated for the first time, and the results indicated that the PV wall could not only significantly reduce the heat gain through the envelope in daytime, but also reduce the heat loss at nighttime. The heat gain and heat loss through the PV wall in winter were reduced by 69% and 32% respectively compared with a normal wall. Totally, an annual thermal energy consumption reduction of 52.1 kW h was achieved by replacing each square meter of a south-facing normal wall by a PV wall, which is equivalent to a saving of 18.6 kW h of electric energy for the air conditioning system in a building. The impact of the thickness of an air duct on the thermal performance of the PV wall was also discussed.