L R AS Published on Tuesday 5 April 2022 - n° 400 - Categories:various sectors
Photovoltaic installations on roofs as a shading and cooling agent
An international group of researchers has studied how rooftop photovoltaic installations can act as a shading and cooling agent for uninsulated buildings in moderately dry and hot climatic zones (in Jordan). The aim of their work was to assess, in particular, how a rooftop photovoltaic panel can potentially reduce the cooling load for a middle-income household in Amman, Jordan.
The photovoltaic system was designed to cover 4.9% of the roof surface. The total installed capacity of the building was 480 kW.
The shading effect of the PV panels can reduce the building's cooling demand by 11%, which means 137 kWh less energy consumption in the cooling months.
"Conversely, the PV panels increased the winter heating load by 4%, meaning that the increase in heating loads during the heating months was 175%."
https://www.pv-magazine.com/2022/04/01/rooftop-pv-to-reduce-cooling-demand-of-uninsulated-buildings/
PV Magazine1 April 2022
