Convective Heat Transfer
Estimate heat flow between a surface and a fluid.
Your numbers
Heat flow rate
Idealized SI-unit model for educational estimates. Confirm material properties, boundary conditions and applicability before engineering use.
Scenario comparison
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Formula
Use P = hAΔT. h is convection coefficient in W/m²·K, A is surface area in m², and ΔT is signed surface-minus-fluid temperature difference in K. Heat flow rate P is in W.
Estimate heat flow between a surface and a fluid.
Worked example
- Convection coefficient (W/m²·K)
- 10
- Surface area (m²)
- 2
- Surface minus fluid temperature (K)
- 20
- Heat flow rate
- 400 W
Scope and limitations
Idealized SI-unit model for educational estimates. Confirm material properties, boundary conditions and applicability before engineering use.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: adaf248374ce · Example checked: