Liquid water (density 997 kg/m3) flows steadily through a pipe with a volume flow rate of 30,000 L/min. Due to viscous friction, the pressure drops from 500 kPa at the inlet to 150 kPa at the exit. If the specific internal energy and specific entropy remain constant along the flow, determine
(a) The rate of heat transfer.
(b) The rate of entropy generation in and around the pipe. Assume the temperature of the surroundings to be 300 K.