Aluminium reflective foil/harga aluminium foil
Aluminum has a natural low emissivity value of .03. This means that aluminium will only allow 3% of radiant heat that comes in contact with its surface to pass through it, the rest will be reflected back to the source. Reflective foil insulation has a long and interesting history that you may not know about. Perhaps its most colorful use is in the space program. During the space race of the 1950s, NASA scientists were confronted with the challenge of developing an insulating product that would protect astronauts from extreme temperature shifts, ranging from -273 degrees Celsius to +238 degrees Celsius. It was impossible to craft a useful space suit from conventional insulating materials because the suit would have to be several feet thick to work properly. The solution to this tricky problem was to employ reflective foil insulation within it to streamline it more and making it bearable to wear. Aluminium reflection foil is an inexpensive way to make your underfloor heati...