Green Roof Heat Transfer

They improve human interaction with nature by introducing green space into the built environment.

Green roof heat transfer. Traditional roof green roof n sensible et r q q q substrate 0 where r n net radiation q sensible sensible heat flux due to convection q et latent heat flux due to convection q substrate roof conductive heat flux through roof n sensible r q q roof 0 energy balance. The review let see the evolution of the mathematical modeling in green goof it start with an analysis of the first attempts to model the heat and mass transfer and proceeds to the most representative current models. Improved human health and comfort. It is a simple concept but describing mathematically how the heat comes and goes can be very difficult.

Thermal mass the ability to store heat in something heavy like a big rock or a chunk of steel or a potato. A test model of a green roof was built at the alternative energy. Green roofs by reducing heat transfer through the building roof can improve indoor comfort and lower the incidence of heat stress associated with heat waves. Green roofs provide aesthetic value and habitat for plant and animal species.

A special characteristic of this type of heat transfer is that the material can be cooler than the surrounding air making the wet surface a little cooler than the ambient air temperature. Improved quality of life. Experimental heat transfer study on green roofs in a semiarid climate during summer 1. Then the heat transfer processes in green roof with heterogeneous approximation is a porous medium where the heat transfer process takes place.

In this study the green roof is considered as a porous media in order to consider the heterogeneous effects where the porous medium is made of several phases and several components.