What does Btu (th)/hour/square foot measure?

It measures heat flux density as thermochemical British thermal units transferred per hour through one square foot of area, indicating heat transfer rate per unit area.

Why convert to CHU/hour/square foot?

Converting to CHU/hour/square foot allows expressing heat flux density in alternative thermal energy units suited for HVAC design and building performance assessments.

Where is this conversion commonly applied?

It is commonly used in building science, HVAC system design, energy code compliance, and evaluating thermal insulation performance.

How to Convert from Btu (th)/hour/square foot to CHU/hour/square foot?

Learn how to convert heat flux density units from Btu (th)/hour/square foot to CHU/hour/square foot for HVAC and building science applications.

Btu (th)/hour/square foot

CHU/hour/square foot

Please check your input. It must be a valid numeric value.

Btu (th)/hour/square foot to CHU/hour/square foot Conversion Table

Btu (th)/hour/square foot	CHU/hour/square foot

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Btu (th)/hour/square foot to CHU/hour/square foot Conversion Table
Btu (th)/hour/square foot	CHU/hour/square foot

Explore More Heat Flux Density Units Converter

What Is This Tool?

This converter allows you to change heat flux density measurements from Btu (th)/hour/square foot to CHU/hour/square foot. Both units quantify heat transfer rates per unit area and are commonly used in HVAC and building science for evaluating thermal performance.

How to Use This Tool?

Enter the heat flux density value in Btu (th)/hour/square foot.
Select the target unit as CHU/hour/square foot.
Click the convert button to get the equivalent heat flux density.
Review the converted value for HVAC or building envelope assessments.

Key Features

Converts heat flux density values between Btu (th)/hour/square foot and CHU/hour/square foot.
Useful for building science, HVAC design, and energy code compliance.
Supports expression of heat transfer rates per area for insulation and equipment sizing.
Easy to use with clear inputs and conversion outputs.
Based on established conversion rates ensuring consistency in evaluations.

Examples

5 Btu (th)/hour/square foot converts to approximately 2.77592 CHU/hour/square foot.
10 Btu (th)/hour/square foot converts to approximately 5.55184 CHU/hour/square foot.

Common Use Cases

Expressing heat loss or gain rates through walls, windows, and roofs per square foot.
Calculating HVAC loads by assessing heat transfer through building envelope components.
Comparing thermal performance of insulation or building materials on an area basis.
Sizing surface heating or cooling equipment based on required heat flux density.

Tips & Best Practices

Ensure consistent unit usage throughout your engineering calculations to maintain accuracy.
Consider the energy equivalence assumptions involved with the CHU unit when interpreting results.
Use this conversion for design and compliance assessments in building science and HVAC projects.

Limitations

The precision and energy equivalence of the CHU unit requires attention in critical calculations.
Users should verify unit consistency to avoid errors in specifying heat flux densities.
This tool does not account for variations in environmental conditions affecting heat transfer.

Frequently Asked Questions

What does Btu (th)/hour/square foot measure?: It measures heat flux density as thermochemical British thermal units transferred per hour through one square foot of area, indicating heat transfer rate per unit area.
Why convert to CHU/hour/square foot?: Converting to CHU/hour/square foot allows expressing heat flux density in alternative thermal energy units suited for HVAC design and building performance assessments.
Where is this conversion commonly applied?: It is commonly used in building science, HVAC system design, energy code compliance, and evaluating thermal insulation performance.

Key Terminology

Btu (th)/hour/square foot: A unit measuring heat transfer rate per square foot, equal to one thermochemical British thermal unit transferred per hour through one square foot.
CHU/hour/square foot: A heat flux density unit expressing thermal energy flow rate in CHUs per hour across one square foot of surface.
Heat Flux Density: The rate of heat transfer per unit area, often used to characterize thermal performance in building science and HVAC.

Quick Knowledge Check

What does the unit Btu (th)/hour/square foot represent?

Energy over time for an entire building

Heat flux density representing heat transfer rate per unit area

Volume of air flow per hour

What is the conversion factor from Btu (th)/hour/square foot to CHU/hour/square foot?

1.8

0.5551840119

3.1546

Which of the following is NOT a use case for converting between these units?

Sizing HVAC loads

Determining insulation heat loss

Measuring electrical current

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