I am trying to figure out how the cost of propane compares to that of natural gas. I found some websites with the price of propane/gal and natural gas/Mcf. But I am trying to figure out how many gallons of propane are in a Mcf of NG.
I am also trying to figure out how many Btus each burns. I've seen that natural gas burns about 1,025 Btus/cf. I am ok with that number. Propane is a bit more confusing i have seen some say propane burns about 91,300 Btus/gallon but I have also seen about 2,500 Btus/cf. This would mean that there are about 36.5 gallons of propane in a cubic foot.
Anyone know if these number sound right and where I can find better concrete information on this?
I ran these values out years ago and your numbers appear to be correct except that there is about 36.5 standard cubic feet of natural gas in one gallon of propane, not the reverse. Propane has a higher heating value (2.5 times) than natural gas, that is why the orifices in bar-b-q grills and forced air heaters are smaller.