What does joule/second/square meter measure?

It measures heat flux density, representing the rate of heat energy flow per unit area in metric units.

Can this conversion be used for dynamic thermal conditions?

No, this conversion applies mainly to steady-state heat flux density and may not directly apply in dynamic or mixed-unit thermal situations.

Convert Joule/second/square meter to Btu (th)/second/square foot

Q: Why convert joule/second/square meter to Btu (th)/second/square foot?

Converting to Imperial units is useful for engineering and building science applications where British thermal units and square feet are standard.

Easily convert heat flux density values from joules per second per square meter to British thermal units (thermochemical) per second per square foot with our online unit converter tool, designed for engineering and building science applications.

Joule/second/square meter

Btu (th)/second/square foot

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

Joule/second/square meter to Btu (th)/second/square foot Conversion Table

Joule/second/square meter	Btu (th)/second/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

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Interval

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

Joule/second/square meter to Btu (th)/second/square foot Conversion Table
Joule/second/square meter	Btu (th)/second/square foot

Explore More Heat Flux Density Units Converter

What Is This Tool?

This tool converts heat flux density units from joule per second per square meter to British thermal units (thermochemical) per second per square foot, allowing users to express thermal power flow per unit area between metric and Imperial systems.

How to Use This Tool?

Input the heat flux density value in joules per second per square meter
Choose joule/second/square meter as the source unit
Select Btu (th)/second/square foot as the target unit
Initiate the conversion to obtain the equivalent Imperial unit
Use the result for engineering or building science calculations

Key Features

Converts between SI (joule/second/square meter) and Imperial (Btu (th)/second/square foot) heat flux density units
Supports thermal power flow measurements applicable in engineering and building sciences
Includes typical use cases like HVAC design, solar irradiance evaluation, and fire-exposure testing
Provides example conversions for quick reference
Browser-based and easy to operate without prior setup

Examples

100 joules/second/square meter converts to 0.0088114 Btu (th)/second/square foot
500 joules/second/square meter converts to 0.044057 Btu (th)/second/square foot

Common Use Cases

Measuring solar irradiance on photovoltaic panels and solar-thermal collectors
Evaluating conductive and convective heat loss through building insulation and envelopes
Designing HVAC systems with heat transfer expressed in Imperial units
Assessing radiative or convective heat loads in industrial furnaces and thermal equipment
Conducting fire-exposure testing and material flammability evaluations

Tips & Best Practices

Ensure consistent use of area units when converting between metric and Imperial units
Use the conversions primarily for steady-state heat flux density conditions
Cross-check conversions if applying in environments with transient or dynamic thermal conditions
Apply the unit conversion carefully in engineering designs to maintain accuracy
Refer to example conversions to validate your input and output values

Limitations

Unit consistency must be maintained especially for surface area measurements
The conversion is specific to steady-state conditions and may not apply to dynamic scenarios
Environmental factors and transient thermal effects may affect real-world applicability
Conversion accuracy depends on correct selection of units and contextual usage

Frequently Asked Questions

What does joule/second/square meter measure?: It measures heat flux density, representing the rate of heat energy flow per unit area in metric units.
Why convert joule/second/square meter to Btu (th)/second/square foot?: Converting to Imperial units is useful for engineering and building science applications where British thermal units and square feet are standard.
Can this conversion be used for dynamic thermal conditions?: No, this conversion applies mainly to steady-state heat flux density and may not directly apply in dynamic or mixed-unit thermal situations.

Key Terminology

Joule/second/square meter: Metric unit measuring heat flow rate per unit area; equivalent to watt per square meter.
Btu (th)/second/square foot: Imperial unit measuring heat flux density; one British thermal unit of energy transferred per second over one square foot.
Heat flux density: The measurement of thermal power crossing a surface area, indicating heat transfer rate per unit area.

Quick Knowledge Check

What does the unit joule/second/square meter quantify?

Thermal energy per unit volume

Heat flux density or thermal power per unit area

Total heat energy over time

Which industry commonly uses Btu (th)/second/square foot for heat flux?

Computer hardware manufacturing

Building science and HVAC design

Pharmaceutical production

What should be considered when converting between these units?

Conversion only works outdoors

Consistency of surface area units and steady-state conditions

Temperature differences are ignored

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