A two fluid heat exchanger has 2 kg/s liquid ammonia at 20oC, 1003 kPa entering state 3

Question:

A two fluid heat exchanger has 2 kg/s liquid ammonia at 20oC, 1003 kPa entering state 3 and exiting at state 4. It is heated by a flow of 1 kg/s nitrogen at 1500 K, state 1, leaving at 600 K, state 2 similar to Fig. P6.86. Find the total rate of heat transfer inside the heat exchanger. Sketch the temperature versus distance for the ammonia and find state 4 (T, v) of the ammonia.