Green Roof Heat Transfer

Green roofs provide aesthetic value and habitat for plant and animal species.

Green roof heat transfer.

Thermal mass the ability to store heat in something heavy like a big rock or a chunk of steel or a potato. 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. 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. They improve human interaction with nature by introducing green space into the built environment.

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. It is a simple concept but describing mathematically how the heat comes and goes can be very difficult. Then the heat transfer processes in green roof with heterogeneous approximation is a porous medium where the heat transfer process takes place. 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.

During the last few years several cities in north america have seen a surge in interest in installing. This work reviews and criticisms the most important mathematical models for heat and mass transfer in green roofs developed and published during the last three decades. Improved quality of life. Improved human health and comfort.

A test model of a green roof was built at the alternative energy.