Radiation Heat Emissivity Aluminum
Reference data and engineering information about radiation heat emissivity aluminum for heat transfer applications.
radiationheatemissivityaluminum
Overview
Engineering reference data for Radiation Heat Emissivity Aluminum in heat transfer.
Key Formulas
Fourier's Law
Heat flux proportional to temperature gradient.
Convective Heat Transfer
Heat transfer between surface and fluid.
Stefan-Boltzmann Law
Radiative heat flux from a surface.
Thermal Resistance
Resistance to heat conduction.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Heat flux | W/m² | |
| Thermal conductivity | W/(m·K) | |
| Convection coefficient | W/(m²·K) | |
| Temperature | K | |
| Emissivity | — | |
| Stefan-Boltzmann constant | 5.67×10⁻⁸ W/(m²·K⁴) |
Aluminum Emissivity Data
23 rows
Aluminum Condition | Temperature(°F (°C)) | Emissivity (ε) |
|---|---|---|
| Unoxidized | 77 (25) | 0.02 |
| Unoxidized | 212 (100) | 0.03 |
| Unoxidized | 932 (500) | 0.06 |
| Oxidized | 390 (199) | 0.11 |
| Oxidized | 1110 (599) | 0.19 |
| Oxidized at 1110 °F | 390 (199) | 0.11 |
| Oxidized at 1110 °F | 1110 (599) | 0.19 |
| Heavily Oxidized | 200 (93) | 0.2 |
| Heavily Oxidized | 940 (504) | 0.31 |
| Highly Polished | 212 (100) | 0.09 |
| Roughly Polished | 212 (100) | 0.18 |
| Commercial Sheet | 212 (100) | 0.09 |
| Highly Polished Plate | 440 (227) | 0.04 |
| Highly Polished Plate | 1070 (577) | 0.06 |
| Bright Rolled Plate | 338 (170) | 0.04 |
| Bright Rolled Plate | 932 (500) | 0.05 |
| Alloy A3003, Oxidized | 600 (316) | 0.4 |
| Alloy A3003, Oxidized | 900 (482) | 0.4 |
| Alloy 1100-0 | 200-800 (93-427) | 0.05 |
| Alloy 24ST | 75 (24) | 0.09 |
| Alloy 24ST, Polished | 75 (24) | 0.09 |
| Alloy 75ST | 75 (24) | 0.11 |
| Alloy 75ST, Polished | 75 (24) | 0.08 |
Source: engineeringtoolbox.com
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.