Heat Flux in Heat Transfer Formulas

Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q". And is denoted by q. Heat Flux is usually measured using the Watt per Square Meter for Heat Flux Density. Note that the value of Heat Flux is always negative.

Formulas to find Heat Flux in Heat Transfer

fxNewton's Law of CoolingGo

fxOne Dimensional Heat FluxGo

fxHeat FluxGo

List of variables in Heat Transfer formulas

fx Heat Transfer Coefficient Go

fx Surface Temperature Go

fx Temperature of Characteristic Fluid Go

fx Thermal Conductivity of Fin Go

fx Wall Thickness Go

fx Temperature of Wall 2 Go

fx Temperature of Wall 1 Go

fx Temperature of Conductor Go

fx Length of Conductor Go

FAQ

What is the Heat Flux?

Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q". Heat Flux is usually measured using the Watt per Square Meter for Heat Flux Density. Note that the value of Heat Flux is always negative.

Can the Heat Flux be negative?

Yes, the Heat Flux, measured in Heat Flux Density can be negative.

What unit is used to measure Heat Flux?

Heat Flux is usually measured using the Watt per Square Meter[W/m²] for Heat Flux Density. Kilowatt per Square Meter[W/m²], Watt per Square Centimeter[W/m²], Watt per Square Inch[W/m²] are the few other units in which Heat Flux can be measured.

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