(a) Water at a rate of 0015 kg/s is heated from 20C to 48-C in a steel tube of 25 mm diameter. Steam is used for heating, and it condenses on the outer surface of the tube. Wall temperature is maintained at 108-C. The flow is fully developed. Compute the following: (i) (i) Velocity of water in the tube. The heat transfer coefficient. (2 marks) (4 marks) PHT: BCHE February 2022 CONFIDENTIAL 3/8 (i) The length of the tube required. Data: Properties of water at film temperature of 71C are: (4 marks) Density = 977.2 kg'm' Specific heat = 4188 J(kg K) Thermal conductivity = 0.668 W/(m K). Viscosity = 0.0004 N.s m