Design & SizingQuestion 16 of 110
A propane appliance is rated at 150,000 BTU/hr. Propane has a heating value of about 2,500 BTU per cubic foot. What is the required gas flow in cfh?
a.15 cfh
b.30 cfh
c.150 cfh
d.60 cfh
Explanation
cfh = 150,000 / 2,500 = 60 cfh. Propane packs about 2.5 times the energy of natural gas per cubic foot, so the same BTU load needs far fewer cubic feet, which is why propane piping is often smaller than natural-gas piping for the same appliance.
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