CFH To BTU Conversion Calculator

BTU/hr Conversion Formula:

\[ BTU/hr = CFH \times Heating Value \]

Heat Output (BTU/hr):

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1. What Is CFH To BTU Conversion?

CFH to BTU conversion calculates the heat output in British Thermal Units per hour based on gas flow rate in cubic feet per hour and the heating value of the gas. This is essential for sizing heating equipment and determining fuel consumption.

2. How Does The Calculator Work?

The calculator uses the BTU/hr conversion formula:

\[ BTU/hr = CFH \times Heating Value \]

Where:

\( CFH \) — Cubic Feet per Hour (ft³/h)
\( Heating Value \) — Energy content per cubic foot (BTU/ft³)

Explanation: The formula multiplies the volume flow rate of gas by its energy density to determine the total heat output per hour.

3. Importance Of BTU Calculation

Details: Accurate BTU calculation is crucial for proper HVAC system sizing, fuel consumption estimation, energy efficiency analysis, and compliance with building codes and standards.

4. Using The Calculator

Tips: Enter CFH in cubic feet per hour and heating value in BTU per cubic foot. Natural gas typically has a heating value around 1000 BTU/ft³, but this can vary by location and gas composition.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Typical Heating Value For Natural Gas?
A: Natural gas typically ranges from 1000-1100 BTU/ft³, but the exact value can vary by region and gas composition. Check with your local utility for precise values.

Q2: How Does Altitude Affect CFH To BTU Conversion?
A: At higher altitudes, air density decreases, which may affect combustion efficiency and actual heat output. Consult manufacturer specifications for altitude corrections.

Q3: Can This Calculator Be Used For Propane Or Other Gases?
A: Yes, simply use the appropriate heating value. Propane has approximately 2500 BTU/ft³, while butane has around 3200 BTU/ft³.

Q4: Why Is Accurate BTU Calculation Important For HVAC Systems?
A: Proper BTU calculation ensures correctly sized equipment, optimal efficiency, adequate heating/cooling capacity, and prevents energy waste or insufficient performance.

Q5: How Do I Convert BTU/hr To Other Units?
A: Common conversions include: 1 BTU/hr = 0.293 watts, 1 therm = 100,000 BTU, and 1 MBH = 1000 BTU/hr.