Experimental Study on PV Solar Wall
The solar energy photovoltaic thermal system is a method to achieve grade utilization of solar energy to improve the comprehensive utilization efficiency of energy. A kind of solar energy photovoltaic air conditioning wall is put forward in this paper, adopting the air flow channel with a small hole on the surface and the negative pressure inside, which can provide electricity and hot air heating simultaneously. The comparison test of the solar photovoltaic cells components (PV) and the solar photovoltaic air conditioning wall (PV/T) shows, under the condition that the radiation intensity reaches above 700W/m2，and the ambient temperature exceeds 25°C, the temperature of PV/T components is slightly higher than PV components, so the power generating efficiency decreases slightly, with the average generating efficiency 12.51%, while the efficiency of the PV is 12.96%.each square meter of the solar energy photovoltaic air conditioning wall can provide the building with 40 m3 of fresh air per hour, with 20°C higher than outdoor, so the average photo-thermal efficiency is 39%.If the photovoltaic air conditioning wall is installed on outside surface of the building envelope, or replace it, to built the building integrated photovoltaic solar thermal system, the building energy consumption would greatly reduce.
Guangfan Li, Yong Huang and Chaohe Chen
D. H. Wang et al., "Experimental Study on PV Solar Wall", Advanced Materials Research, Vols. 250-253, pp. 3134-3138, 2011