Green Roof Heat Loss

Co benefits of heat island mitigation strategies reduced air pollution and greenhouse gas emissions.

Green roof heat loss. Energy conservation translates into fewer greenhouse gas emissions. In winter the green roof minimizes heat loss through added insulation on the roof. They can reduce heating by adding mass and thermal resistance value also can reduce the heat island by increasing evapotranspiration. This energy is known as latent heat.

Because green roofs store water in the growing media and plants latent heat loss is accomplished via transpiration from plants and evaporation of moisture from the growing medium collectively referred to as evapo transpiration. Importantly this also moderates heat flow through a building by shading increased insulation and thermal mass. Green roofs improve and reduce energy consumption. By lowering air conditioning demand green roofs can decrease the.

Green roofs improve air quality. The positive effect on the temperature of the membrane under a green roof protects the membrane from the effects of uv frost and sunlight. Thermal reduction and energy conservation. This paper discusses about the effects on the surrounding temperatures if the existing flat roofs in the.

A 2005 study by brad bass of the university of toronto showed that green roofs can also reduce heat loss and energy consumption in winter conditions. Under a green roof however the fluctuations were in the order of 6ºc.