Browse Forums Windows & Doors Re: Double Glazing - Scorched curtains anyone? 11May 13, 2010 2:45 pm dymonite69 ed @ EcoClassic Double glazing does indeed trap radiant heat, but when it traps radiant heat, it is no longer radiant heat, but heat that has energised the material it fell on, where it dissipates mostly as conducted heat, warming the air and the surroundings. Any object above -273 degrees Celsius will radiate heat (including the 'energised' objects in the room). As you know this is how low-e windows work - because it further reduces the radiant heat loss from inside the house. Normal glass does this to some degree but not as well as low-e. DG might let less solar radiation enter (Solar Heat Gain Co-efficient - SGHC) but I am wondering if this is offset by also letting less radiant heat out. Anyway the question is largely academic. To reach really high temperatures you would some kind of setup like a solar oven where the material is designed in a way to reach really high temperatures without being losing it's heat. I agree, and I am sure there is some offset with DG by letting less radiant heat out... how much? Not sure... Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 This is one of the reasons I decided to go overseas for my double glazed windows. As the builder indicated, he's worked on many upmarket builds, these were the most well… 13 19232 have you used any of the motorised curtain systems available from Ebay? Which one and how is it? 0 2431 For your reference Performance Labels: Window assemblies in housing, except timber windows, must be labelled so the label can be seen when it is in situ. For timber… 6 7712 |