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Cooling Mode - Heat Flux

Heat fluxes for various cooling or heat transfer modes

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Cooling modes and maximum heat transfer flux:

Cooling ModeHeat Flux
Free Convection Air 0.5
Forced Convection Air 5
Free Convection Immersion 10
Forced Convection Immersion 500
Forced Convection Boiling 1000
Impingement Air 10
Jet Immersion, single phase 400
Jet Immersion, boiling 900
  • 1 Btu/ ft2 h = 3.1525 W/m2

Based on 85oC surface temperature and 20oC ambient temperature.

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  • en: heat flux cooling modes convection
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