Net Radiation Rate Equation

Net radiation into the object: P_in = P_abs − P_emit = εσA(T_env⁴ − T_obj⁴). Positive means heating. Net radiation outward has the opposite sign.

$P_{net}=\text{Net Radiation}\left(\text{Watt}\right)$​
$P_{radiation}=\text{Radiation Rate}\left(\text{Watt}\right)$​
$P_{absorption}=\text{Absorption Radiation Rate}\left(\text{Watt}\right)$

[$\text{Watts}=\text{Joules/s}$]

Radiation Rate Equation, Stefan Boltzman Constant

Chapter 7 - Heat Transfer

Chapter 7 - FFR - Thermal Expansion