1. What is BTU and CFH?

BTU (British Thermal Unit) is a unit of energy measurement, while CFH (Cubic Feet per Hour) measures gas flow rate. This calculator converts gas flow rate to energy output assuming 1000 BTU per cubic foot of natural gas.

2. How Does the Calculator Work?

The calculator uses the simple conversion formula:

Where:

• \( BTU \) — British Thermal Units per hour
• \( CFH \) — Cubic Feet per Hour
• \( 1000 \) — BTU content per cubic foot of natural gas

Explanation: This calculation assumes standard natural gas with an energy content of 1000 BTU per cubic foot. Actual BTU content may vary slightly depending on gas composition.

3. Importance of BTU Calculation

Details: Accurate BTU calculation is essential for sizing heating equipment, calculating fuel consumption, estimating energy costs, and ensuring proper system performance for gas appliances.

4. Using the Calculator

Tips: Enter the gas flow rate in cubic feet per hour (CFH). The value must be greater than zero. The calculator will output the corresponding BTU per hour.

5. Frequently Asked Questions (FAQ)

Q1: Why use 1000 BTU per cubic foot?
A: This is the standard energy content for natural gas in most regions, though it can range from 950-1150 BTU/ft³ depending on the gas source.

Q2: What appliances use this calculation?
A: Furnaces, water heaters, stoves, dryers, and any gas-fired equipment where energy output needs to be determined from gas flow rate.

Q3: How accurate is this calculation?
A: Very accurate for standard natural gas. For propane or other gases, different conversion factors apply.

Q4: Can I use this for propane calculations?
A: No, propane has approximately 2500 BTU per cubic foot, so you would need to use a different conversion factor.

Q5: What if my gas has a different BTU content?
A: Contact your gas provider for the exact BTU content of your gas supply and adjust the calculation accordingly.