The condenser of a steam power plant operates at a pressure of 12.35 kPa. Steam at this pressure condenses on the outer surfaces of horizontal tubes through which cooling water circulates. The outer diameter of pipes is 4 cm, and the outer surfaces of the tubes are maintained at 20°C (see the figure). Determine: The rate of heat transfer to the cooling water circulating in the tubes, and The rate of condensation of steam per unit length of a horizontal tub

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