Simple approach to cooling load component calculation through PV walls

摘要

The heat transfer across a photovoltaic wall (PV wall) is investigated to determine the cooling load component contributed by building-integrated PV walls. A new definition of equivalent hourly average outdoor temperature is given for simplifying the calculation procedures of the cooling load component. Calculation results show that the cooling load component can be obtained conveniently by using the average outdoor temperature and recommended film coefficients of the special building claddings. The meteorologial data of three cities (Hong Kong, Shanghai and Beijing) were used as examples to calculae the heat gains and the cooling load components of typicla building walls. Comparing with the results between PV walls and massive walls, the photovoltaic integration in building walls reduceds the corresponding cooling load components by 33/100-50/100.