What Is This Tool?
This tool converts heat transfer coefficient values from watt per square meter per degree Celsius to kilocalorie (IT) per hour per square foot per degree Celsius, enabling users to express thermal conductance in different unit systems for building, HVAC, and engineering applications.
How to Use This Tool?
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Enter the heat transfer coefficient value in watt per square meter per degree Celsius
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Select watt/square meter/°C as the input unit
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Select kilocalorie (IT)/hour/square foot/°C as the output unit
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Click the convert button to see the result in kcal (IT)/h·ft²·°C
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Use the conversion formula displayed to verify your results
Key Features
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Converts heat transfer coefficients from W·m⁻²·°C⁻¹ to kcal (IT)/h·ft²·°C
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Supports applications in building energy performance and HVAC system design
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Provides quick and accurate unit conversions with a clear formula
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Browser-based tool requiring no installation
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Helps in sizing heat exchangers and calculating heat loads
Examples
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Convert 5 watt/square meter/°C: 5 × 0.0798822356 = 0.399411178 kilocalorie (IT)/hour/square foot/°C
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Convert 10 watt/square meter/°C: 10 × 0.0798822356 = 0.798822356 kilocalorie (IT)/hour/square foot/°C
Common Use Cases
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Estimating heat loss through building elements using imperial energy and area units
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Designing HVAC systems with thermal performance values expressed in kcal (IT)/h and ft²
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Sizing heating and cooling equipment based on converted U-values
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Comparing convective heat transfer coefficients from experiments reported in kcal (IT)/h·ft²·°C
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Performing building energy assessments where mixed unit conventions apply
Tips & Best Practices
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Ensure consistent use of temperature difference units (°C or K) according to tool definitions
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Use steady-state heat transfer assumptions when applying conversion results
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Double-check unit selection before converting to avoid errors
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Apply the conversion formula for manual verification to reinforce accuracy
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Be aware of different kilocalorie standards that may slightly affect results
Limitations
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Conversion assumes steady-state heat transfer and uniform temperature differences
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Transient heat transfer or complex cases may need more detailed modeling beyond simple unit conversion
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Variations in kilocalorie definitions could slightly influence precision
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Users must maintain consistent temperature difference units (°C or K) to avoid misinterpretation
Frequently Asked Questions
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What does watt per square meter per degree Celsius measure?
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It measures the heat transfer coefficient, indicating the rate of heat transfer per unit area for each degree Celsius of temperature difference.
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Why convert from watt/square meter/°C to kilocalorie (IT)/hour/square foot/°C?
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Converting allows expression of heat transfer coefficients in units commonly used in HVAC, building energy calculations, and contexts requiring imperial area and energy units.
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Can I use this conversion for transient heat transfer situations?
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No, this conversion assumes steady-state conditions; transient or complex heat transfer scenarios require more advanced analysis.
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Are the temperature difference units °C and K interchangeable for this conversion?
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Yes, per the tool's definitions, the per-degree Celsius unit is equivalent to per-Kelvin for temperature differences in this context.
Key Terminology
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Heat Transfer Coefficient
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A measure of heat transfer rate per unit area for each degree of temperature difference across a surface.
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Watt per Square Meter per Degree Celsius (W·m⁻²·°C⁻¹)
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A unit quantifying heat transfer coefficient as the power transferred per square meter area per 1 °C temperature difference.
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Kilocalorie (IT) per Hour per Square Foot per Degree Celsius
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A heat transfer coefficient unit expressing how many international-table kilocalories pass through one square foot of surface per hour for each 1 °C temperature difference.