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BTU Conversion Formula:
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BTU (British Thermal Unit) is a unit of heat energy, while CFH (Cubic Feet Per Hour) measures the flow rate of natural gas. This calculator converts natural gas flow rate to heat output using the standard conversion factor.
The calculator uses the conversion formula:
Where:
Explanation: The conversion factor 1027 represents the average BTU content per cubic foot of natural gas, which can vary slightly depending on the gas composition and local standards.
Details: Accurate BTU calculation is essential for sizing heating equipment, calculating energy consumption, estimating heating costs, and ensuring proper system design for natural gas applications.
Tips: Enter the CFH value (cubic feet per hour of natural gas flow). The value must be greater than zero. The calculator will instantly compute the equivalent BTU output.
Q1: Why is the conversion factor 1027?
A: 1027 is the standard average BTU content per cubic foot of natural gas, though it can range from 1000-1100 BTU/cf depending on gas composition and local standards.
Q2: What is a typical CFH range for residential appliances?
A: Typical ranges: furnace 100-200 CFH, water heater 30-50 CFH, stove 20-40 CFH, fireplace 30-80 CFH depending on size and efficiency.
Q3: Can this calculator be used for propane or other gases?
A: No, this calculator is specifically for natural gas. Propane has a different energy density (approximately 2500 BTU/cf) and requires a different conversion factor.
Q4: How accurate is this conversion?
A: The conversion is accurate for standard natural gas. For precise calculations, consult your local gas utility for the exact BTU content in your area.
Q5: What factors affect natural gas BTU content?
A: Gas composition, altitude, temperature, pressure, and the specific mix of methane, ethane, and other hydrocarbons in the natural gas supply.