Basic Transport Law Analogy
One-dimensional steady-state heat-flow through a plane wall used as an analogy for momentum, heat and mass transport phenomena.
š Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Thickness in metres (L)
- m
- m
Area (A)
- mĀ²
- mĀ²
Temperature Difference (DeltaT)
- K
- K
Thermal Resistance (R_wall)
- K Wā»Ā¹
- K Wā»Ā¹
Total Heat Flow (q)
- W
- W
Heat Flux (q_dblprime)
- W mā»Ā²
- W mā»Ā²
Need this calculation offline?
Download Offline Excel CalculationContext & Assumptions
This calculator applies Fourierās law to estimate conductive heat loss through a flat wall, a common first check for insulation adequacy in buildings and process equipment. It assumes constant thermal conductivity and negligible edge effects, providing a quick sizing basis for HVAC or trim heaters.
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