Saturated water vapor at a pressure of 12.4 kPa is Condensed over an array of 100 horizontal tubes, each with a diameter of 8 mm and a length of 1 m. The tube surfaces are maintained with a uniform temperature of 30°C. Determine the condensation rates of the tubes for (a) a rectangular array of 5 tubes high and 20 tubes wide and (b) a square array of 10 tubes high and 10 tubes wide. Compare and discuss the results of (a) and (b) . Answers: (a) u. 155 kg/s. (b) 0.130 kg-s
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