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권영철(Kwon Young-Cheol),김양오(Kim Yang-O) 한국건축친환경설비학회 2010 한국건축친환경설비학회 논문집 Vol.4 No.3
Reflective Insulation is a multilayer radiant barrier product with an intrinsic R-value. Comprised of layers of aluminum foil, nonwoven, and/or polyethylene, the insulation creates reflective airspaces within the cavity, thereby reducing radiant heat transfer and heat flow by convection. The use of aluminum foil as a reflective insulation ensures a minimum 95 to 97 percent reflectance of long-wave radiant heat. This study shows the process of development of a high-efficiency Low-E Insulation from normal reflective insulation and its possible application to the building envelop to satisfy the reinforced exterior wall insulating regulations. The configuration indicates the thickness of insulation could be reduced as half as that of existing mass insulation such as polystyrene foam board or glassfiber matt. The critical difference between Low-E insulation and the existing reflective insulation is whether it has self- reflective airspace or not. Low-E insulation has the self-reflective airspace between the aluminum foils.