The principle of heat insulation materials
Heat insulation materials in the building heat exchange performance in three ways: conduction heat + convection heat <25%, radiant heat> 75%.
Summer tiles roof temperature increases, a large number of radiant heat into the room led to the temperature continued to rise, work and living environment very uncomfortable.
Dike aluminum foil coil solar radiation absorption coefficient (normal total radiation emissivity) 0.07, very little heat of radiation. It is widely used in thermal insulation of roof and wall.
Thermal energy transmission route (without insulation film): Sun - Infrared magnetic wave - Thermal impact of the tile to the temperature rise - the tile becomes a heat source to radiate heat - thermal impact of the cast - in - place roof to raise the temperature - Roofs become heat sources radiate heat - the indoor ambient temperature continues to rise
Thermal energy transmission line (plus insulation film): sun - infrared magnetic wave - thermal impact of the tile to the temperature rise - the tile becomes a heat source of heat radiation - thermal impact aluminum foil to surface temperature rise - aluminum foil emitter Low, low heat radiation - the room to maintain a comfortable ambient temperature.