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Luft prandtl number Viskosität Wärmekapazität Wärmeleitfähigkeit

Reference data und engineering information about Luft prandtl number Viskosität Wärmekapazität Wärmeleitfähigkeit für Wärmeübertragung applications.

airprandtlnumberviscosityRechnerDatentabelle

Overview

Engineering reference data for Air Prandtl Number Viscosity Heat Capacity Thermal Conductivity 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)

References