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Title
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Heat insulation panels with multilayer, low-emissivity aluminum-polyethylene sheets
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Author
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Abstract
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| Buildings are large consumers of energy in all countries. The proper use of thermal insulation in buildings does not only contribute in reducing the required air-conditioning or heating size, reducing the thickness of walls but also in reducing the annual energy cost. As the heat flows through the building envelope (walls, roofs, floors) in the way of radiation, conduction and convection, there are buildings in which the radiation is the dominant method of heat transmission. Reflective Insulation System is formed by a combination of low emittance surfaces and air spaces that provide reflective cavities which have low levels of radiant energy transmission. In this research insulation panels with multilayer, low-emissivity aluminum-polyethylene sheets were prepared and investigated with a thermal box. The investigation includes the analysis of the effects of changing the number of reflecting layers, ranging from zero to seven, as well as the number and thickness of air spaces, within the same total insulation thickness (40 mm). This study showed that surface emissivity and convection have important influence on heat flow. The aluminum-polyethylene sheets were effective in reflecting heat and reducing heat transfer by radiation. |
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Language
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English
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Source (book)
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Proceedings of the 3rd International Conference on Advanced Constructon, 18-19 October 2012, Kaunas, LITHUANIA
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Publication
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Kaunas
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2012
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ISSN
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2029-1213
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Volume/pages
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p. 192-200
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ISI
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000333218400049
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