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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

EFFECT OF DISTRIBUTED PHOTOVOLTAIC POWER STATION ON BUILDING COOLING LOAD IN SUMMER

Get access (open in a dialog) DOI: 10.1615/IHTC16.nee.021989
pages 7389-7394

Sinopsis

The distributed photovoltaic power station on flat roof changes the original condition of roof and affects the cooling load induced by conduction through roof. The temperatures of photovoltaic module, original roof and shadowed roof were measured in three typical photovoltaic stations including high incline, low incline and horizon bracket installation method. A mathematic model was built to describe the heat transfer in roof and calculate the conduction through roof. Modification was made for radiation time series method to calculate the cooling load induced by conduction through roof. Cooling loads of continuous sunny days and rainy days were obtained separately. Cooling loads of shadowed roof reduce about 15-20% for high and low bracket installation methods, while about 6% for horizon bracket installation method compared to the original roof in summer. The cooling load of whole roof also relates to roof utility. High roof utility leads a small cooling load under same installation method. Roof with low bracket photovoltaic station has the smallest cooling load in summer. And they are almost the same for roofs with high and horizon bracket PV station.