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Posted by RBM on December 20, 2007, 6:08 pm
I'm on the same wavelength as you, it seems impractical at best. The
building is fairly new, and well insulated, no windows, with foam filled
aluminum doors. The outdoor temp is 32 degrees.
>
>>Don't know if there is a formula for this and I'm not looking for a
>>typical
>>heat loss calculation. The scenario is this: Garage is 24' X 24' with 12'
>>ceiling. There is sheetrock and insulation in the ceiling and three walls.
>>The garage has two standard overhead doors. Temperature is aprox 32
>>degrees.
>>I want to raise the temperature to 60 degrees in about one hour. How many
>>BTU's do I need?
>
> Anyone who has the numbers is going to need to know how cold it is
> outside-- is it likely to get to 20 below or is 32 the coldest it gets
> outside?
>
> How much insulation and how many & what type of windows will also be
> needed if this is even doable. Hey- while you're at it- are those
> doors new, insulated doors, or 50 yr old aluminum shells?
>
> All that said- I think you're going to want something in a kerosene,
> gas or oil heater. My WAG would be something in the 50K BTU
> range- that would be about 15000 watts- [62 amps of 240 if my memory
> and math serve me]
>
> Electricity has its advantages, but IMO, heating a space up in a hurry
> isn't one of them. [though I will say I've never seen an electric
> furnace in action- if you're in the TN Valley that might be worth
> looking into]
>
> Jim
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