Q14. Dry saturated steam enters the shell of a shell and tube condenser at a pressure of 0.091 bar and leaves as saturated liquid. The rate of heat transfer is 75 MW. The condenser has a total of 12000 tubes arranged in a single pass. Each tube has outside diameter 16 mm, wall thickness 1.2 mm and length 3.7 m. cooling water enters the tubes at a temperature of 25°C and leaves at 31°C. The specific heat capacity of the cooling water is 4.2 kJ/(kg K) and its density is 1000 kg/m3.
Determine EACH of the following:
(a) The mass flow rate of steam
(b) The mass flow rate of cooling water
(c) The logarithmic mean temperature difference
(d) The overall heat transfer coefficient, bared on the tube outside surface area
(e) The mean flow velocity of the cooling water in the tubes.
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