Emissivity in Heat Transfer Formulas

The Emissivity is a measure of a material’s ability to emit thermal radiation compared to that of a perfect black body at the same temperature. And is denoted by ε.

Heat Transfer formulas that make use of Emissivity

fxHeat Exchange by Radiation due to Geometric ArrangementGo

fxBlack Bodies Heat Exchange by RadiationGo

fxNon Ideal Body Surface EmittanceGo

FAQ

What is the Emissivity?

The Emissivity is a measure of a material’s ability to emit thermal radiation compared to that of a perfect black body at the same temperature.

Can the Emissivity be negative?

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

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