Radiant heat transfer between disks
Input(s)
A: Area of Body \(\left(\mathrm{ft}^{2}\right)\)
\(\sigma\): Stefan-Boltzmann Constant \(\left(\mathrm{BTU} / \mathrm{h} \mathrm{ft}^{2}{ }^{\circ} \mathrm{R}^{4}\right)\)
F: View Factor of Body (fraction)
\(T_{1}\): Initial Temperature of Emitting Body \(\left({ }^{\circ} \mathrm{R}\right)\)
\(T_{2}\): Temperature of Absorbing Body \(\left({ }^{\circ} \mathrm{R}\right)\)
Output(s)
Q: Heat Transfer Rate by Radiation (BTU/h)
Formula(s)
\[
\mathrm{Q}=\mathrm{A} * \mathrm{~F} * \sigma *\left(\left(\mathrm{~T}_{1}^{4}\right)-\left(\mathrm{T}_{2}^{4}\right)\right)
\]
Reference(s)
Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons, Chapter: 16, Page: 501 .