Ddaddy
Just doing what I do
The calculations are as follows:No clue as to the BTU, it's just a little bit smaller than your average electric convection over/stove combo.
My idea would be to essentially run a tarp vertically about 24 feet from one end of the shed, across the entire 40 ft width, then drop the ceiling height using another tarp from 16 feet to 12(top of the lift) essentially making a 880 square foot room to heat vs 3200 square feet.
Harbor fright has tarps , roughly 100 bucks worth of their heavy silver tarps would do it
Stove output=30,000 btu per cubic foot of firebox size
Heating requirements are 10 btu per cubic foot of heating space to increase temp 50*F
Your proposal is around 10,500 cubic feet which would require 105k btu. If the stove is a 4 cubic foot fire box, it will put out 120,000 btu which will raise the temperature by 60* F.


, glad you are going to have warmer weather there Ben, Good morning sir 














