Quote:
Originally posted by rsl12
the difference between atmospheric pressure and the propane tank pressure is greater at higher altitudes, for obvious reasons. so when you put that sucker on 'high', more gas can come out. so basically, if my theory is right, it burns hotter because you are using more propane. you will also run out faster.
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I don't think this would make a difference. The regulator on the propane tank is set to let a certain amount of gas through per minute. The difference in atmospheric pressure between 1500 and 4500 ft is very little. It would probably have little influence. Besides the pressure in the gas line after the regulator is much higher than atmospheric pressure, so the difference would not influence how fast it came out.
I think its the briquets. As basmoq said, less oxygen at increased altitude will mean less combustion and thus less heat...