A large heat exchanger has several columns of tubes, with 20 tubes in each column. The outer diameter of the tubes is 1.5 cm. Saturated steam at 50c condenses on the outer surfaces of the tubes, which are maintained at 20c. Determine (a) the average heat transfer coefficient and (b) the rate of condensation of steam per m length of a column.
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the rate of condensation of steam per m length of a column.
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