31 - Condensation

\[\boxed{h_m = 0.729\left[\frac{g\rho(\rho-\rho_v)\lambda k^3}{\mu (T_v-T_w)D}\right]^{1/4} }\] where \(D\) is the outside diameter of tube.

For condensation over a sphere of diameter \(D\), the coefficient 0.729 is replaced with 0.826.