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Abstract
The U.S. Environmental Protection Agency (EPA) estimates that annual U.S. energy demand for air conditioning is an expenditure of $40 billion. Green roofs can reduce the money spent on air conditioning by regulating heat fluctuations through the roof of a building. Green roofs may reduce the roof membrane temperature during the day and maintain that temperature throughout the night. The purpose of this study is to evaluate the thermal benefits of green roof systems. A green roof system on the campus of SIUE had an average roof temperature in August 2006 between 23.6C and 29.8C or a fluctuation of 6.2. A black EPDM control roof had temperature fluctuations between 19.1C and 46.3C; this is a 27.2C range. The green roof is maintaining the roofing membrane at a more consistent temperature, which may keep the building at a more constant temperature, thus reducing the energy required to condition the interior spaces and/or maintain comfortable temperatures for occupants
The U.S. Environmental Protection Agency (EPA) estimates that annual U.S. energy demand for air conditioning is an expenditure of $40 billion. Green roofs can reduce the money spent on air conditioning by regulating heat fluctuations through the roof of a building. Green roofs may reduce the roof membrane temperature during the day and maintain that temperature throughout the night. The purpose of this study is to evaluate the thermal benefits of green roof systems. A green roof system on the campus of SIUE had an average roof temperature in August 2006 between 23.6C and 29.8C or a fluctuation of 6.2. A black EPDM control roof had temperature fluctuations between 19.1C and 46.3C; this is a 27.2C range. The green roof is maintaining the roofing membrane at a more consistent temperature, which may keep the building at a more constant temperature, thus reducing the energy required to condition the interior spaces and/or maintain comfortable temperatures for occupants
Date
5/2008
5/2008
Author(s)
Sidwell; Gibbs-Alley; Forrester; Jost; Luckett; Morgan; Yan; Noble; Retzlaff
Sidwell; Gibbs-Alley; Forrester; Jost; Luckett; Morgan; Yan; Noble; Retzlaff
Page(s)
12
12
Keyword(s)
green roof; thermal performance
green roof; thermal performance