* Btu is a measure of heat energy, not gas flow. CFh measures the volume of gas flow. To convert Cfh to Btu, you need to know the heating value of the gas being measured.
Here's how to calculate Btu:
1. Find the heating value of the gas: This is typically measured in Btu per cubic foot (Btu/ft³). Common fuels and their heating values:
* Natural gas: ~1,000 Btu/ft³
* Propane: ~2,500 Btu/ft³
2. Multiply the gas flow rate by the heating value:
* Example: 175 Cfh of natural gas with a heating value of 1,000 Btu/ft³ would equal 175 Cfh * 1,000 Btu/ft³ = 175,000 Btu/h
Important Note: A gas meter measures flow, but it doesn't directly tell you the amount of heat energy delivered.
