What Is This Tool?
This converter transforms heat transfer coefficient units from kilocalorie (IT)/hour/square foot/°C into Btu (IT)/second/square foot/°F. It helps translate thermal performance parameters between two imperial measurement systems using different energy, time, area, and temperature units.
How to Use This Tool?
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Enter the heat transfer coefficient value in kilocalorie (IT)/hour/square foot/°C
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Choose the conversion to Btu (IT)/second/square foot/°F
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Click the convert button to get the equivalent value in the target unit
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Use the result for HVAC design, heat loss calculations, or thermal performance assessments
Key Features
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Converts heat transfer coefficient units between kcal (IT)/h·ft²·°C and Btu (IT)/s·ft²·°F
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Supports HVAC, refrigeration, and building energy modeling needs
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Handles differences in time and temperature scales automatically
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Provides exact conversion based on international-table definitions
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Browser-based and simple to use without software installation
Examples
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5 Kilocalorie (IT)/hour/square foot/°C equals 0.003061976 Btu (IT)/second/square foot/°F
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10 Kilocalorie (IT)/hour/square foot/°C equals 0.006123952 Btu (IT)/second/square foot/°F
Common Use Cases
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Specifying overall heat transfer coefficients (U-values) for building materials in HVAC calculations
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Sizing heating and cooling loads with energy units in kcal (IT) and imperial area units
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Comparing convective heat transfer coefficients from experiment data reported in kcal (IT)/h·ft²·°C
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Rating heat exchangers and coated surfaces using Btu (IT)/s·ft²·°F units
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Calculating heat loss or gain through building components using US customary units
Tips & Best Practices
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Ensure input values are steady-state heat transfer coefficients without transient effects
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Always confirm the energy and temperature unit definitions before converting
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Use the tool to facilitate cross-region HVAC design where unit systems differ
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Verify inputs are based on international-table calorie and Btu definitions for consistency
Limitations
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Conversion involves different units of temperature and time which must be accounted for carefully
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Precision relies on consistent international-table unit definitions for kilocalorie and Btu
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Assumes steady-state heat transfer, not suitable for transient or dynamic thermal conditions
Frequently Asked Questions
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Why do the conversion units involve different temperature scales?
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The units convert from degrees Celsius to degrees Fahrenheit, reflecting the difference in how temperature intervals are measured in the two systems.
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Can this conversion be used for transient heat transfer calculations?
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No, the tool is designed for steady-state heat transfer coefficients and does not account for transient thermal effects.
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What industries commonly use these unit conversions?
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HVAC engineering, building energy modeling, refrigeration design, and thermal performance analysis commonly require these conversions.
Key Terminology
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Kilocalorie (IT)/hour/square foot/°C
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A unit of heat transfer coefficient indicating heat flow through one square foot per hour per degree Celsius using international-table kilocalories.
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Btu (IT)/second/square foot/°F
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An imperial unit measuring heat power transferred through one square foot per second for a 1 °F temperature difference.
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Heat Transfer Coefficient
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A value expressing how much heat passes through a unit area per unit temperature difference over time.