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Aliquid flows at a velocity of 1.1m/s through a pipe of diameter 25mm. It is copled as it flows through the pipe. The mean properties of the liquid are density 900kg/m3, Viscosity 0.0005Ns/m2; specific heat capacity 3700J/kg. K; Thermal conductivity, 0.532W/mK. Calculate the film heat transer coerficient using the Dittus-Boelter equation and determine the heat transfer per unit area if the temperature of the liquid and the pipe surface are 70C and 5C respectively. [4]