What Is This Tool?
This converter transforms heat transfer coefficient values measured in Btu (th)/hour/square foot per degree Fahrenheit into CHU/hour/square foot per degree Celsius, enabling seamless integration of imperial and metric thermal performance data.
How to Use This Tool?
-
Enter the heat transfer coefficient value in Btu (th)/hour/square foot/°F.
-
Select the desired output unit: CHU/hour/square foot/°C.
-
Click convert to obtain the equivalent heat transfer coefficient.
-
Use the result for building energy or HVAC load calculations.
Key Features
-
Converts heat transfer coefficients between imperial and metric temperature units.
-
Supports building envelope and HVAC system analysis.
-
Browser-based with simple input and output.
-
Uses precise conversion aligned with recognized thermal measurement standards.
Examples
-
Convert 5 Btu (th)/hour/square foot/°F to CHU/hour/square foot/°C: 5 × 0.9993312315 = 4.9966561575 CHU/hour/square foot/°C.
-
Convert 10 Btu (th)/hour/square foot/°F to CHU/hour/square foot/°C: 10 × 0.9993312315 = 9.993312315 CHU/hour/square foot/°C.
Common Use Cases
-
Specifying U-values for walls, windows, and roofs in building design.
-
Performing HVAC load and performance assessments across unit systems.
-
Comparing insulation effectiveness and conducting retrofit evaluations.
-
Ensuring compliance with international building codes requiring metric units.
Tips & Best Practices
-
Always verify unit consistency when entering values.
-
Ensure temperature differences correspond correctly to °F or °C scales.
-
Use steady-state conditions for more accurate conversion relevance.
-
Confirm building code requirements for unit standards before applying values.
Limitations
-
Conversion may involve minor precision loss due to rounding.
-
Temperature scale differences necessitate careful interpretation.
-
Assumes steady-state heat transfer and linear temperature gradients only.
Frequently Asked Questions
-
Why convert Btu (th)/hour/square foot/°F to CHU/hour/square foot/°C?
-
Users convert to align heat transfer coefficients with metric temperature units for international projects and compliance with metric-based building codes.
-
Can this converter handle dynamic heat transfer conditions?
-
No, the conversion assumes steady-state heat transfer with linear temperature gradients and does not account for complex dynamic scenarios.
-
How is the conversion factor determined?
-
The tool uses the defined conversion rate of 1 Btu (th)/hour/square foot/°F equal to 0.9993312315 CHU/hour/square foot/°C.
Key Terminology
-
Btu (th)/hour/square foot/°F
-
A unit measuring the rate of heat transfer per square foot per degree Fahrenheit temperature difference.
-
CHU/hour/square foot/°C
-
A heat transfer coefficient measured per square foot per degree Celsius temperature difference.
-
U-value
-
A metric for thermal transmittance indicating heat flow through a building element per temperature difference.