Heat-Loss Calculation - assumptions


Old 10-30-08, 08:56 AM
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Heat-Loss Calculation - assumptions

I'm doing a heat-loss calculation using the Slant/Fin program. I'm using 70 deg for the indoor temp and -10 deg for the outdoor design temp.

We live in northern Illinois. The extreme min temp is around -20, but in any given year, there will only be a few times that it gets as low as -15.

So, does -10 seem reasonable for the outdoor design temp?
Old 10-30-08, 05:40 PM
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