Quote:
Originally Posted by missp_32
6. Once I got settled in on a nice flame and started melting, I was impressed with the ease I was able to melt boro. I don't understand how the flame temperature itself can only be about 10 degrees different, but the BTU's 2.5 times hotter with propane.
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There is a big difference between temperature and heat. A BTU(the non metric measurement for heat) is the amount of energy that is required to raise one pound of water one degree Fahrenheit. Propane is a much denser gas than Methane(natural gas), so at the same pressure there is more fuel available to burn.