heaters (patio heater?)
" Have you thought of using something like this? http://tinyurl.com/3y8z55 You'd have to make sure you had good ventilation, of course. With regard to frost protection, the formula is exactly the same as that used for calculating normal heating requirements, but the numbers are different. Decide what temperature you want to maintain under what conditions - e.g. 5 degC inside when it's -5 degC outside (say) - then work out the heat losses, taking into account the U value and area of each external surface (walls, windows, doors, roof, floor). Whatever heater you put in there needs to be able to replace the heat which is going out. A greenhouse heater of a few hundres watts may well suffice, but you'll need to work it out. -- Cheers, Roger Radiant heat heaters heat YOU if pointed at you - not too close though, else you may combust !! Little point in trying to maintain the whole room above ambient - it would take a load more heat input to do that without good insulation. Nick |
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