Radiation Heat Emissivity Aluminum

Overview

Engineering reference data for Radiation Heat Emissivity Aluminum in heat transfer.

Key Formulas

Fourier's Law

$q = -k \nabla T$

Heat flux proportional to temperature gradient.

Convective Heat Transfer

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

Heat transfer between surface and fluid.

Stefan-Boltzmann Law

$q = \varepsilon \sigma T^4$

Radiative heat flux from a surface.

Thermal Resistance

$R_{th} = \frac{L}{kA}$

Resistance to heat conduction.

Variables

Symbol	Description	Unit
$q$	Heat flux	W/m²
$k$	Thermal conductivity	W/(m·K)
$h$	Convection coefficient	W/(m²·K)
$T$	Temperature	K
$\varepsilon$	Emissivity	—
$\sigma$	Stefan-Boltzmann constant	5.67×10⁻⁸ W/(m²·K⁴)

Aluminum Emissivity Data

Applications

The relatively low emissivity coefficient makes aluminum an effective material for limiting radiated heat loss. This property is commonly exploited in aluminum coatings for rescue blankets, survival equipment, and thermal insulation in outdoor and aerospace applications.

Interactive Charts

References

• Original Source