What Is This Tool?
This tool converts heat transfer coefficients from CHU/hour/square foot/°C to Joule/second/square meter/K, helping users translate thermal performance measurements into SI units for use in building science and engineering.
How to Use This Tool?
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Enter the value of heat transfer coefficient in CHU/hour/square foot/°C.
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Select CHU/hour/square foot/°C as the source unit and Joule/second/square meter/K as the target unit.
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Click the convert button to obtain the value in Joule/second/square meter/K.
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Use results for thermal performance comparison or engineering calculations.
Key Features
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Converts heat transfer coefficients between CHU/hour/square foot/°C and Joule/second/square meter/K.
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Supports building envelope thermal performance analysis and HVAC system design.
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Uses an exact conversion factor for precise unit translation.
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Browser-based and easy to use without complex calculations.
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Facilitates compliance with international standards and integration with engineering software.
Examples
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2 CHU/hour/square foot/°C converts to 11.3565266822 Joule/second/square meter/K.
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0.5 CHU/hour/square foot/°C converts to 2.83913167055 Joule/second/square meter/K.
Common Use Cases
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Comparing thermal performance of walls, windows, and roofs during building design.
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Estimating heat loss or gain in HVAC load calculations and energy modeling.
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Specifying insulation or fenestration characteristics for retrofit evaluations and building code compliance.
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Calculating U-values and heat loss through building envelopes in SI units.
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Designing and rating heat exchangers and evaluating insulation and coating efficiency in engineering projects.
Tips & Best Practices
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Ensure temperature differences are entered in degrees Celsius or Kelvin consistently.
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Verify units carefully when applying conversion results to avoid inconsistencies.
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Use this conversion tool primarily for steady-state heat transfer analyses.
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Consult engineering context to confirm applicability for transient heat flow scenarios.
Limitations
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Conversion assumes steady-state heat transfer conditions and may not suit transient or non-uniform heat flow.
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Users must ensure temperature differences use compatible units (°C or K) due to unit definitions.
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Not applicable for units or measurements outside of specified heat transfer coefficient formats.
Frequently Asked Questions
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What does CHU/hour/square foot/°C measure?
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It is a heat transfer coefficient expressing the rate of heat flow per hour through one square foot of surface area per degree Celsius temperature difference.
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Why convert CHU/hour/square foot/°C to Joule/second/square meter/K?
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Conversion to SI units like Joule/second/square meter/K allows international standard compliance, detailed energy modeling, and compatibility with engineering software.
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Can I use this tool for transient heat transfer calculations?
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No, this tool assumes steady-state heat transfer and is not designed for transient or non-uniform heat flow scenarios.
Key Terminology
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CHU/hour/square foot/°C
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A unit measuring the steadystate rate of heat transfer per hour through one square foot of surface for each degree Celsius.
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Joule/second/square meter/K
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An SI unit representing heat transfer rate per unit area and per unit temperature difference in Kelvin.
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Heat transfer coefficient
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A parameter quantifying how quickly heat flows through a surface per unit area per unit temperature difference.