Emissivity in Convection Formulas

Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95. And is denoted by ε.

Formulas to find Emissivity in Convection

fxEmissivity given heat transfer coefficient by radiationGo

Convection formulas that make use of Emissivity

fxHeat transfer coefficient due to radiation for horizontal tubesGo

List of variables in Convection formulas

fx Heat Transfer Coefficient by Radiation Go

fx Wall Temperature Go

fx Saturation Temperature Go

FAQ

What is the Emissivity?

Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95.

Can the Emissivity be negative?

{YesorNo}, the Emissivity, measured in {OutputVariableMeasurementName} {CanorCannot} be negative.

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