Quote:
Originally Posted by ed_denu
The only online calculator I've seen mentioned on this site is in an Excel spreadsheet format. While it does ask for oven dimensions, they are only used to compute internal volume. There is no calculation within it that references surface area. What other oven calculators are available?
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A good one to start with is the one linked to from the sticky thread in this forum.
http://www.heatershop.com/btu_calculator.htm
It really comes down to the fact that heat is lost through the walls. More walls = more lost heat.