Originally Posted by KnP
By the way, how the Propane Heater works. For what I read, seems to enhance the moisture inside. My understanding is the combustion is vented outside. Another thing that I read was about the stove. The humidity is from the food been cooked, not the burned propane, is that correct or is both.
The furnace exhausts its combustion products outside, so it does not affect the indoor humidity in any way.
Humidity from cooking comes from both the food and the propane. A stovetop burner will produce about 7 ounces of water per hour from burning the propane. That's almost half a pint.
For the mathematically inclined, this is how I arrived at the 7 oz:
C3H8 + 5O2 = 3CO2 + 4H2O
Molar mass of propane = 44. Molar mass of water = 18.
1 molecule of propane produces 4 molecules of water.
So 1 lb propane produces 4x18/44 = 1.64 lb water. (The added 0.64 lb comes from oxygen used.)
Propane produces 21,600 BTU per lb.
A 6,000 BTU burner consumes 6,000/21,600 = 0.278 lb/hr
This produces 0.278 x 1.64 = 0.455 lb water
This is equal to 0.455 x 16 = 7.3 oz water