The surface temperature $(T_s)$ for a solid can be calculated using the formula $q,$ temperature, $e_{\text{g}\text{e}\text{n}}^{}$ is the rate of heat generation, $h$ is the heat transfer coefficient, $V$ is the volume of the solid, and $A_s$ is the cross sectional area of the solid.

$T_s=-T_{}-\frac{e_{\text{g}\text{e}\text{n}}^{}V}{A_{s}h}$

$T_s=-T_{}+\frac{e_{gm}^{}V}{A_{s}h}$

$T_s=T_{}-\frac{e_{\text{g}\text{e}\text{n}}^{}V}{A_{s}h}$

$T_s=T_{}+\frac{e_{gm}^{}V}{A_{s}h}$

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