What Is This Tool?
This converter allows you to transform values of heat flux density from Btu (IT) per hour per square foot to kilocalorie (IT) per hour per square meter. It is designed to assist professionals in building energy analysis by providing unit alignment necessary for thermal transmittance and heat transfer rate calculations.
How to Use This Tool?
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Enter the value you want to convert in Btu (IT)/hour/square foot.
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Choose the output unit as kilocalorie (IT)/hour/square meter.
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Click convert to obtain the result instantly.
Key Features
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Converts heat flux density units commonly used in building and HVAC sectors.
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Supports expressions of thermal transmittance (U-values) for various building components.
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Browser-based and easy to use with no installation required.
Examples
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Convert 5 Btu (IT)/hour/square foot: multiply by 2.7124597981 to get 13.5622989905 kilocalorie (IT)/hour/square meter.
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Convert 0.1 Btu (IT)/hour/square foot: multiply by 2.7124597981 to obtain 0.27124597981 kilocalorie (IT)/hour/square meter.
Common Use Cases
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Expressing U-values to evaluate thermal performance of walls, roofs, and windows.
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Sizing heating and cooling loads by calculating heat loss or gain through building envelopes.
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Comparing insulation performance and associating it with R-values for construction materials.
Tips & Best Practices
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Ensure consistent unit standards (IT) are applied to avoid conversion errors.
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Use the tool within the context of building physics to compare thermal transmittance accurately.
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Verify measurement conditions such as temperature remain consistent when applying conversion.
Limitations
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Variations in different Btu or calorie unit variants may lead to confusion without careful standard use.
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Differences in surface area units influence results if not correctly accounted for.
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Assumes stable measurement conditions; real-world changes may affect heat flux values.
Frequently Asked Questions
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What does Btu (IT)/hour/square foot measure?
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It measures heat flux density as one International Table British thermal unit transferred per hour across one square foot of surface area.
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Why convert to kilocalorie (IT)/hour/square meter?
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Converting to kilocalorie (IT)/hour/square meter aligns values with international standards used in building physics and energy audits.
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Can I use this tool for other unit variants?
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This tool is specific to the International Table units; using other Btu or calorie variants may cause inaccurate conversions.
Key Terminology
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Btu (IT)/hour/square foot
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A unit measuring the rate of heat transfer per hour per square foot using the International Table British thermal unit.
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Kilocalorie (IT)/hour/square meter
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A measurement of heat flux density indicating the energy transfer of kilocalories across one square meter per hour in the International Table standard.
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Thermal transmittance (U-value)
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A value expressing the capacity of a building element to transfer heat, used for calculating energy efficiency.