GRS Green Roofs Solar Steel Systems

Are GRS & GWS a good solution for indoor thermal comfort & energy saving?

Among these, GRs and GWs are generally effective solutions related to improving indoor thermal comfort and energy saving ( Yaghoobian & Srebric, 2015 ), ( Rakotondramiarana et al., 2015) because roofs and all building envelope elements are exposed to the highest solar irradiance ( Costanzo et al., 2016 ).

Does GR affect wind speed under PV panels?

For wind speed under PV panels, the cooling effect of GR on PV panels is influenced by air velocity under the panel as narrow systems do not allow good air flow and, therefore, store more hot air under the PV panels ( Zluwa & Pitha, 2021 ).

What is the temperature of GR under a PV panel?

Besides the temperature of the PV panel, the temperature of the roof itself can be beneficially controlled. The surface temperature of the GR under PV panels is cooler than that of the black roof by 0.6˚K to 2.3˚K in tropical climates ( Alshayeb & Chang, 2018 ).

How does GR affect PV performance?

Moreover, GR in this integrated system not only promotes the global trend in maintaining the natural environment and reducing the footprint of built-up areas, but also GR has a positive effect on PV performance (the second part of the system).

Do GRS improve outdoor thermal comfort and air temperature?

Therefore, applying GRs on low buildings (12 m) improves outdoor thermal comfort and air temperature at the pedestrian level more than for tall buildings (exceeding 30 m) in the hot arid climate of Egypt ( Aboelata, 2021 ). 3.2.14. Spread of GR on the urban scale

Are PV-green roofs sustainable?

Finally, there is a need for standardized codes and methods to be shared around the world to adopt the PV-green roof as a sustainable practice, and there is a need to perform an experimental study of PV-green roofs on a larger scale to precisely define its benefits in the real world.