Cooling Mode and Heat Flux

Heat flux for various cooling modes

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The table below can be used to indicate the maximum heat flux for various cooling modes.

Cooling Mode	Heat Flux (kW/m²)
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 85^oC surface temperature and 20^oC ambient temperature.

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Related Topics

Thermodynamics The effects of work, heat and energy on a system

Related Documents

Overall Heat Transfer Coefficients for some common Fluids and Heat Exchanger Surfaces Average overall heat transmission coefficients for some common fluids and surface combinations as Water to Air, Water to Water, Air to Air, Steam to Water and more
Conductive Heat Transfer Heat transfer takes place as conduction if there is a temperature gradient in a solid or fluid
Radiation Heat Transfer Heat transfer due to emission of electromagnetic waves is known as thermal radiation
Radiation Heat Emissivity for Aluminum Radiation heat emissivity of unoxidized, oxidized and polished aluminum

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