What Is This Tool?
This converter transforms heat transfer coefficient values from kilocalorie (IT) per hour per square foot per degree Celsius into the SI unit watt per square meter per kelvin. It enables users to switch between imperial and metric thermal units for engineering, HVAC, and building energy calculations.
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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Select the from unit as kilocalorie (IT)/hour/square foot/°C and the to unit as watt/square meter/K
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Click convert to obtain the result in watt/square meter/K
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Use the output for HVAC design, thermal calculations, or building energy analysis
Key Features
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Converts heat transfer coefficients expressed in kcal (IT)/hour/ft²/°C to W/m²/K
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Supports building and HVAC thermal performance analysis
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Browser-based and easy to use with straightforward interface
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Facilitates comparison between imperial and metric unit systems
Examples
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Convert 2 kilocalorie (IT)/hour/square foot/°C: Result is 25.036855641 watt/square meter/K
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Convert 0.5 kilocalorie (IT)/hour/square foot/°C: Result is 6.25921391025 watt/square meter/K
Common Use Cases
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Specifying overall heat transfer coefficients (U-values) in building energy calculations using imperial units
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Sizing heating and cooling loads and choosing HVAC equipment based on kcal (IT)/h·ft²·°C measurements
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Reporting convective heat transfer coefficients in experimental and empirical studies
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Converting building envelope U-values from imperial to SI units for design and comparison
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Thermal management of electronics and heat exchangers involving surface heat transfer
Tips & Best Practices
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Ensure temperature differences are interpreted correctly, as Celsius and kelvin intervals match
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Use the conversion for interoperability between regional engineering and energy standards
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Verify unit selection before converting to avoid errors
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Cross-check converted values when using them in critical thermal design decisions
Limitations
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Conversion accuracy depends on exact constants; rounding may introduce slight errors
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Assumes temperature difference units are equivalent in interval size (°C and K)
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Experimental setups or standards could require adjustments beyond unit conversion
Frequently Asked Questions
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What does kilocalorie (IT)/hour/square foot/°C measure?
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It measures the heat transfer coefficient representing how many kilocalories per hour pass through one square foot of surface per degree Celsius temperature difference.
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Why convert kilocalorie (IT)/hour/square foot/°C to watt/square meter/K?
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Converting to watt/square meter/K allows the use of SI units preferred in international engineering standards and facilitates compatibility in HVAC and building energy analysis.
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Are °C and K interchangeable in this conversion?
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Yes, for temperature difference measurements used here, Celsius and kelvin intervals are equivalent, enabling direct conversion between these units.
Key Terminology
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Kilocalorie (IT)/hour/square foot/°C
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A unit representing heat transfer coefficient as the heat flow rate in kilocalories per hour through a square foot area per degree Celsius temperature difference.
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Watt/square meter/K
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The SI unit of heat transfer coefficient quantifying power per unit area per kelvin temperature difference.
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Heat Transfer Coefficient
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A measure of heat transfer per unit area and temperature difference between a surface and its surroundings.