Radiation Heat Transfer
Calculator for radiation heat transfer from a warm object to colder surroundings using the Stefan-Boltzmann Law. Calculates net radiation loss rate based on emissivity, temperatures, and surface area.
Radiation Heat Transfer Calculator
This calculator is based on the Stefan-Boltzmann Law and calculates the net radiation heat loss rate:
q = ε σ (Th⁴ - Tc⁴) Ah
Where:
- ε = emissivity coefficient (0 < ε ≤ 1)
- σ = Stefan-Boltzmann constant = 5.6703×10⁻⁸ W/m²K⁴
- Th = hot body absolute temperature (K)
- Tc = cold surroundings absolute temperature (K)
- Ah = surface area (m²)
Common Emissivity Values:
- Black body: ε = 1.0
- Oxidized iron (390°F): ε = 0.64
- Polished copper (100°F): ε = 0.03