BTU to CFH Converter
Convert heat load from BTU per hour to Cubic Feet per Hour (CFH) for various gases.
British Thermal Units (BTU) to Cubic Feet per Hour (CFH) Conversion
To convert British Thermal Units (BTU) to Cubic Feet per Hour (CFH), we need to account for the energy content specific to each gas. The general formula is:
Conversion Formula
The formula becomes:
CFH = BTU/hr ÷ Energy content per cubic foot (BTU/ft³)Where:
- CFH = Cubic Feet per Hour
- BTU/hr = British Thermal Units per hour
- Energy content per cubic foot = Specific to the gas being used
Energy Content per Cubic Foot (BTU/ft³):
- Natural Gas: ~1,000 BTU/ft³
- Propane: ~2,500 BTU/ft³
- Butane: ~3,200 BTU/ft³
- Methane: ~1,000 BTU/ft³
- Ethane: ~1,500 BTU/ft³
- Liquefied Petroleum Gas (LPG): ~2,500 BTU/ft³ (similar to propane)
Key Insight:
This formula helps determine the flow rate of gas required to achieve a specific heating requirement based on BTU.
British Thermal Units (BTU)
A British Thermal Unit (BTU) is a unit of heat energy. It is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
- Scientific Definition: The amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
- Common Usage: Used in heating and cooling systems, such as HVAC units and refrigerators.
Cubic Feet per Hour (CFH)
CFH is a measure of gas flow rate:
- Scientific Definition: The volume of gas that flows in one hour, measured in cubic feet.
- Common Applications: Used in gas appliances and HVAC systems to specify gas flow rates for heating.
BTU to CFH Conversion Table
| BTU/hr | Energy Content (BTU/ft³) | CFH |
|---|---|---|
| 1,000 BTU/hr | 1,000 BTU/ft³ | 1.00 CFH |
| 2,500 BTU/hr | 2,500 BTU/ft³ | 1.00 CFH |
| 5,000 BTU/hr | 1,000 BTU/ft³ | 5.00 CFH |
| 10,000 BTU/hr | 2,500 BTU/ft³ | 4.00 CFH |
| 15,000 BTU/hr | 3,200 BTU/ft³ | 4.69 CFH |
| 20,000 BTU/hr | 1,500 BTU/ft³ | 13.33 CFH |
