Heat Flux Density Converter
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What is a Heat Flux Density Converter?
A heat flux density converter is a tool that converts between units of heat transfer rate per unit area such as watts per square meter, BTU per hour per square foot, and kilowatts per square meter. It is used in thermodynamics, HVAC engineering, and building science.
How to Convert Heat Flux Density Units
Select the heat flux unit you want to convert from and the target unit using the dropdown menus. Enter your value in the input field and the converter instantly calculates the equivalent heat flux density. Useful for converting between metric and imperial thermal units.
Heat Flux Density Conversion Formulas
History of Heat Flux Density Measurement
Heat flux measurement became important during the Industrial Revolution for quantifying heat transfer in boilers and engines. The watt per square meter is the SI unit. BTU per hour per square foot is widely used in American HVAC and building science for thermal calculations.
About This Heat Flux Density Converter
This heat flux density converter supports 12 units including watt/m², kilowatt/m², watt/cm², watt/in², BTU/hour/ft², calorie/second/cm², kilocalorie/hour/m², horsepower/ft², and dyne/hour/cm. It covers SI, imperial, and CGS heat flux units.
Frequently Asked Questions
How do I convert W/m² to BTU/h/ft²?
Multiply the W/m² value by 0.3170 to get BTU/h/ft². For example, 100 W/m² × 0.3170 = 31.70 BTU/h/ft².
What is heat flux density?
Heat flux density is the rate of heat energy transfer through a surface per unit area. It measures how much thermal energy passes through a given area per unit time, expressed in W/m² or BTU/h/ft².
How do I convert BTU/h/ft² to W/m²?
Multiply the BTU/h/ft² value by 3.1546 to get W/m². For example, 50 BTU/h/ft² × 3.1546 = 157.73 W/m².
What is solar irradiance in W/m²?
Solar irradiance at Earth's surface is approximately 1000 W/m² on a clear day at noon. This value is used as a standard test condition for solar panels.
What is the difference between heat flux and heat flux density?
Heat flux is the total rate of heat transfer (in watts). Heat flux density is heat flux per unit area (in W/m²). Heat flux density allows comparison of thermal performance regardless of surface size.
Metric Conversion Factor Tables for Heat Flux Density Converter
| Units to convert | Multiply By The Number | Convert as Unit |
|---|---|---|
| Watt/sq meter (W/m²) | 0.001 | Kilowatt/sq meter (kW/m²) |
| Kilowatt/sq meter (kW/m²) | 1000 | Watt/sq meter (W/m²) |
| Watt/sq meter (W/m²) | 0.0001 | Watt/sq centimeter (W/cm²) |
| Watt/sq meter (W/m²) | 0.3170064 | BTU (IT)/hour/sq foot |
| BTU (IT)/hour/sq foot | 3.1545907 | Watt/sq meter (W/m²) |
| Watt/sq meter (W/m²) | 0.8598452 | Kilocalorie (IT)/hour/sq meter |
Heat Flux Densityconverters & it's abbreviations
| Unit | Abbreviation | Unit | Abbreviation | Unit | Abbreviation |
|---|---|---|---|---|---|
| watt/square meter | W/m² | kilowatt/square meter | kW/m² | watt/square centimeter | W/cm² |
| watt/square inch | W/in² | BTU (IT)/hour/square foot | BTU/h/ft² | calorie (IT)/second/sq. centimeter | cal/s/cm² |
| kilocalorie (IT)/hour/square meter | kcal/h/m² | horsepower/square foot | hp/ft² |
Complete list of Heat Flux Density conversion units and its conversion.
- 1 watt/square meter = 0.001 kilowatt/square meter
W/m² to kW/m² → - 1 kilowatt/square meter = 1000 watt/square meter
kW/m² to W/m² → - 1 watt/square meter = 0.3170064 BTU (IT)/hour/square foot
W/m² to BTU/h/ft² →
- 1 BTU (IT)/hour/square foot = 3.1545907 watt/square meter
BTU/h/ft² to W/m² → - 1 watt/square meter = 0.0001 watt/square centimeter
W/m² to W/cm² → - 1 watt/square centimeter = 10000 watt/square meter
W/cm² to W/m² →