Calculate the average heat transfer coefficient for film type condensation of water at pressures of 10 kPa and 101 kPa for
(a) a vertical surface 1.5 m high,
(b) the outside surface of a 1.5-cm-OD vertical tube 1.5 m long,
(c) the outside surface of a 1.6-cm-OD horizontal tube 1.5 m long, and
(d) a 10-tube vertical bank of 1.6-cm-OD horizontal tubes 1.5 m long. In all cases assume that the vapor velocity is negligible and that the surface temperatures are constant at 11°C below saturation temperature.