What Is This Tool?
This converter transforms heat transfer coefficient values from CHU/hour/square foot/°C to Btu (IT)/second/square foot/°F. It helps translate metric-based heat transfer units commonly used internationally into imperial units used in US customary engineering practices.
How to Use This Tool?
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Enter the heat transfer coefficient value in CHU/hour/square foot/°C
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Select or confirm the input and output units
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Click the convert button to obtain the equivalent value in Btu (IT)/second/square foot/°F
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Use the result for engineering calculations or energy modeling
Key Features
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Converts heat transfer coefficients between metric and imperial units
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Based on the exact conversion rate for steady-state conditions
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Useful for HVAC, refrigeration, and building envelope energy calculations
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Supports building code compliance and retrofit assessments
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Browser-based and easy to use without installation
Examples
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10 CHU/hour/square foot/°C converts to 0.002777778 Btu (IT)/second/square foot/°F
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50 CHU/hour/square foot/°C converts to 0.01388889 Btu (IT)/second/square foot/°F
Common Use Cases
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Comparing thermal performance (U-value) of walls, windows, and roofs
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Estimating heat loss or gain for HVAC load calculations and energy modeling
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Specifying insulation or fenestration performance in building design
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Rating convective heat-transfer coefficients for HVAC and refrigeration systems
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Calculating heat exchanger overall heat-transfer coefficients in US customary units
Tips & Best Practices
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Ensure that input values represent steady-state heat transfer conditions
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Confirm the correct use of temperature scales (°C and °F) in calculations
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Check unit consistency when combining converted coefficients with other parameters
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Use this conversion for bridging metric and imperial unit standards in engineering
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Review your results within the context of building envelope or HVAC applications
Limitations
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This conversion assumes steady-state heat transfer without transient effects
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Temperature scale differences must be handled accurately for correct results
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Users must maintain unit consistency in related engineering parameters
Frequently Asked Questions
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Why is it important to convert CHU/hour/square foot/°C to Btu (IT)/second/square foot/°F?
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Converting between these units allows engineers and designers to work within the preferred unit systems for their region, ensuring compatibility in HVAC, refrigeration, and building energy modeling calculations.
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Can I use this converter for transient heat transfer calculations?
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No, this conversion tool is designed for steady-state heat transfer conditions and does not account for transient effects.
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How does this tool handle the difference between Celsius and Fahrenheit scales?
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The conversion factor incorporates the difference between the temperature increments in °C and °F, ensuring accurate unit translation.
Key Terminology
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CHU/hour/square foot/°C
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A heat transfer coefficient unit quantifying steady-state heat flow per square foot for each degree Celsius temperature difference.
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Btu (IT)/second/square foot/°F
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An imperial heat transfer coefficient unit representing power transferred per square foot for a 1 °F temperature difference.
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Heat Transfer Coefficient
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A measure of the rate of heat flow through a surface per unit area and temperature difference.