Consider a horizontal pipe of diameter 20 cm. Steam enters the pipe as a saturated vapor at 0.5 MPa with a velocity of 12 m/s and exits at 0.45 MPa with a quality of 95%. Heat transfer from the pipe to the surroundings at 300 K takes place at an average outer surface temperature of 400 K. For operation at steady state, determine: Steam enters (a) the velocity at the exit, in m/s (b) the rate of heat transfer from the pipe, in kW. (c) the rate of entropy generation, in kW/K, for a control volume comprising only the pipe and its contents. (d) The rate of entropy generation, in kW/K, for an enlarged control volume that includes the pipe and enough of its immediate surroundings so that heat transfer from the control volume occurs at 300 K. (e) Why do the answers of part (c) and (d) differ?