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Problem(.) In an experiment, it is found that the local convection coefficient on a flat plate of length L is given by: (10 marks) h,-o923 (k/x){(V. ?.?)/p)as, where k, V, p, and ? are constants. Determine the average convection coefficient over the plate h Problem (5) (10 marks) Milk is flowing with a mass flow rate m 0.6 kg/s, in a pipe with internal diameter - 3 cm. Its initial temperature is 50 °C and final temperature is 20 ? Using water at constant temperature of 10 °C. The over all coefficient 900 W/m2 k. C, for milk is 3890 J/ kg k, C, for water is 4200 / m k. Determine the length of the pipe required. GOOD LUCK Useful information: ?-5.67 x 10-8 W/m2 k

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