Thread: Moly cooling
View Single Post
  #43  
Old 08-06-2010, 01:49 PM
Edward Skeels Edward Skeels is offline
Hotshop Warlord
 
Join Date: Mar 2007
Location: St Louis
Posts: 270
Edward Skeels is on a distinguished road
diminished returns

I'd used the Heatransfer program many times and always looked at the same two numbers: heat flux in btu/Hr/sq.ft and shell temp.

I never went a step further and applied the numbers to the total surface area.

I'd always made my 300# gas furnace the same size because of space limitations on one side of the hood. (54" O.D.)

I am Ed; sheep army of one.

An increase of Fiber from 6 to 12 inches in roof and walls would save about a dollar a day at current natural gas prices.

The second increase to 18 inches thickness would save an additional 50 cents per day.

There are additional actual savings as the burner would be turned down at each thickness increment; less exhaust gasses up the stack.

I don't have the brains to figure that.
Reply With Quote