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

TitleValidation of the Thermal Effect of Roof-Spraying and Green Plants in an Insulated Building
Publication TypeConference Paper
Year of Publication2004
AuthorsNan Zhou, Weijun Gao, Chris Marnay, Masaru Nishida, Toshio Ojima
Conference NameSimBuild 2004, IBPSA-USA National Conference, August 4-6, 2004
Date Published08/2004
Conference LocationBoulder, CO
Keywordsbuilding, buildings, China Energy Group, energy analysis and environmental impacts department, insulation, plant, roof-spraying, thermal effect
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.