Radiation shields
Input(s)
\(\mathrm{k}\): Stefan-Boltzmann Constant \(\left(\mathrm{BTU} / \mathrm{s} \mathrm{ft}^{2}{ }^{\circ} \mathrm{R}^{4}\right)\)
\(T_{i}\): First Sheet's Temperature (K)
\(T_{i+1}\): Next Sheet's Temperature (K)
\(Q_{i, i+1}\): Heat Transfer Rate (BTU/s)
Output(s)
\(R_{i, i+1}\): Resistance to Radiation \(\left(\mathrm{ft}^{2} \mathrm{~K} / \mathrm{W}\right)\)
Formula(s)
\[
\mathrm{R}_{\mathrm{i}, \mathrm{i}+1}=\frac{\sigma *\left(\mathrm{~T}_{\mathrm{i}}^{4}-\mathrm{T}_{\mathrm{i}+1}^{4}\right)}{\mathrm{Q}_{\mathrm{i}, \mathrm{i}+1}}
\]
Reference(s)
Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons, Chapter: 16, Page: 509.