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Thermal
Surface Convection
Enter values in the stated units. Example inputs are provided to help you explore the method.
Results
Your results will appear here after calculation. Changing an input clears the previous result.
Method & assumptions
- Calculate surface convection using Q̇ = hAΔT and q″ = hΔT.
- Positive results mean heat leaves the surface; negative results mean heat enters it. R = 1/(hA).
- Example: h = 10 W/(m²·K), A = 2 m² and ΔT = 30 K give 600 W, 300 W/m² and 0.05 K/W.
- Supply a mean coefficient appropriate to the geometry, fluid and flow conditions. This calculator does not estimate h or model variation along the surface.
- Assumes a uniform surface temperature and a defined bulk-fluid temperature. Conduction, radiation and transient temperature changes are excluded.