The saturated steam at 0.1 bar condenses with convection coefficient of 6800 W/ m 2 .K on the outside of a vertical brass tube (k = 110 W/m.K) having inner and outer diameters of 16.5 mm and 19 mm,...

The saturated steam at 0.1 bar condenses with convection coefficient of 6800 W/ m².K on the outside of a vertical brass tube (k = 110 W/m.K) having inner and outer diameters of 16.5 mm and 19 mm, respectively. The convection coefficient for water flowing inside the tube is 5200 W/ m².K.

Estimate the steam condensation rate per unit length of the tube, when the mean water temperature is 30°C.