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To heat 3,000 Kg / h of methanol from 20 ° C to 80 ° C,...

To heat 3,000 Kg / h of methanol from 20 ° C to 80 ° C, a single-pass exchanger consisting of a set of 1 "and 1.80 m long tubes is passed through the tubes. the heating is provided with saturated water vapor at 1 at which is condensed on the outside of the tubes, with its condensation coefficient being 6,000 Kcal / m2h° C. Determine the number of tubes required of methanol at its average temperature for the determination of the tube wall-methanol convection coefficient, and the resistance to heat transmission offered by the tube wall will be neglected.)

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