How do I calculate Heat Transfer & Thermal Power?

To calculate Heat Transfer & Thermal Power: Enter Overall heat transfer coeff. U, Transfer surface area A, Hot side temperature and other values. Click Calculate. INDUGRID computes the result instantly using the formula: Q [W] = U × A × ΔT | U = 1 / (1/h₁ + d/λ + 1/h₂) [W/m²K]. No registration required.

What units does the Heat Transfer & Thermal Power calculator use?

The Heat Transfer & Thermal Power calculator uses the following units: W/m²K, m², °C. SI units are used by default.

Is the Heat Transfer & Thermal Power calculator free?

Yes. The INDUGRID Heat Transfer & Thermal Power calculator is completely free, requires no account or login, and works on desktop and mobile browsers.

Thermodynamics

Heat Transfer & Thermal Power

Calculate heat transfer rate through a wall or surface (conduction/convection), essential for cooling system design, panel thermal management and process heating.

Units:

in LinkedIn

💡Poor thermal management is a leading cause of electronic and motor failures. Control panel temperature should remain below 35–40°C inside. Every 10°C increase above rated temperature halves component lifetime (Arrhenius rule).

Q [W] = U × A × ΔT | U = 1 / (1/h₁ + d/λ + 1/h₂) [W/m²K]

Input

Overall heat transfer coeff. U iOverall heat transfer coefficient. Steel panel to still air: ~5 W/m²K. With forced convection: 10–30. Insulated wall: 0.3–2.

W/m²K

Transfer surface area A iEffective heat transfer area in m².

m²

Hot side temperature iTemperature of the hot side (e.g. inside cabinet) in °C.

°C

Cold side temperature iTemperature of the cold side (e.g. ambient) in °C.

°C

Result

Temperature difference ΔT [K] —

Heat transfer rate Q [W] —

Heat transfer rate Q [kW] —

Heat flux q [W/m²] —