Steam enters a long, horizontal pipe with an inlet diameter of 14 cm at 1 MPa, 250oC

Question:

Steam enters a long, horizontal pipe with an inlet diameter of 14 cm at 1 MPa, 250oC with a velocity of 1.2 m/s. Further downstream, the conditions are 800 kPa and 210oC, and the diameter is 12 cm. Determine
(a) The rate of heat transfer to the surroundings, which is at 25oC.
(b) The rate of entropy generation in the system's universe.
(c) Draw an entropy flow diagram for the system.