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Overall Heat Transfer Coefficient

Reference data and engineering information about overall heat transfer coefficient for heat transfer applications.

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Overview

Engineering reference data for Overall Heat Transfer Coefficient in heat transfer.

Key Formulas

Fourier's Law

q=kTq = -k \nabla T

Heat flux proportional to temperature gradient.

Convective Heat Transfer

Q=hA(TsT)Q = hA(T_s - T_\infty)

Heat transfer between surface and fluid.

Stefan-Boltzmann Law

q=εσT4q = \varepsilon \sigma T^4

Radiative heat flux from a surface.

Thermal Resistance

Rth=LkAR_{th} = \frac{L}{kA}

Resistance to heat conduction.

Variables

SymbolDescriptionUnit
qqHeat fluxW/m²
kkThermal conductivityW/(m·K)
hhConvection coefficientW/(m²·K)
TTTemperatureK
ε\varepsilonEmissivity
σ\sigmaStefan-Boltzmann constant5.67×10⁻⁸ W/(m²·K⁴)

Thermal Conductivity Data

References