The condenser of a steam power plant consists of a square (in-line) array of 900 tubes, each of \(25-\mathrm{mm}\) diameter. Consider conditions for which saturated steam at 0.135 bars condenses on the outer surface of each tube, while a tube wall temperature of \(23^{\circ} \mathrm{C}\) is maintained by the flow of cooling water through the tubes. What is the rate of heat transfer to the water per unit length of the tube array? What is the corresponding condensation rate?