National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Validation of the Thermal Effect of Roof-Spraying and Green Plants in an Insulated Building.

DE2004833572

Publication Date	2004
Personal Author	Zhou, N.; Gao, W.; Marnay, C.; Nishida, M.; Ojima, T.
Page Count	12
Abstract	In recent years, roof-spraying and rooftop lawns have proven effective on roofs with poor thermal insulation. However, the roofs of most buildings have insulating material to provide thermal insulation during the winter. The effects of insulation has not previously been quantified. In this study, the authors collected measurements of an insulated building to quantify the thermal effects of roof-spraying and rooftop lawns. Roof-spraying did not significantly reduce cooling loads and required significant amounts of water. The conclusion is that roof spraying is not suitable for buildings with well-insulated roofs. Rooftop lawns, however, significantly stabilized the indoor temperature while additionally helping to mitigate the heat island phenomenon.
Keywords	Thermal insulation Buildings Roofs Relative humidity Performance Temperature measurement Cooling load Roof spraying Rooftop lawns
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA.; Waseda Univ., Tokyo (Japan).; Department of Energy, Washington, DC.; University of Kitakyushu (Japan).
Supplemental Notes	Prepared in cooperation with Waseda Univ., Tokyo (Japan). and University of Kitakyushu (Japan). Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200515

Validation of the Thermal Effect of Roof-Spraying and Green Plants in an Insulated Building.

Validation of the Thermal Effect of Roof-Spraying and Green Plants in an Insulated Building.
DE2004833572

Publication Date	2004
Personal Author	Zhou, N.; Gao, W.; Marnay, C.; Nishida, M.; Ojima, T.
Page Count	12
Abstract	In recent years, roof-spraying and rooftop lawns have proven effective on roofs with poor thermal insulation. However, the roofs of most buildings have insulating material to provide thermal insulation during the winter. The effects of insulation has not previously been quantified. In this study, the authors collected measurements of an insulated building to quantify the thermal effects of roof-spraying and rooftop lawns. Roof-spraying did not significantly reduce cooling loads and required significant amounts of water. The conclusion is that roof spraying is not suitable for buildings with well-insulated roofs. Rooftop lawns, however, significantly stabilized the indoor temperature while additionally helping to mitigate the heat island phenomenon.
Keywords	Thermal insulation Buildings Roofs Relative humidity Performance Temperature measurement Cooling load Roof spraying Rooftop lawns
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA.; Waseda Univ., Tokyo (Japan).; Department of Energy, Washington, DC.; University of Kitakyushu (Japan).
Supplemental Notes	Prepared in cooperation with Waseda Univ., Tokyo (Japan). and University of Kitakyushu (Japan). Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200515