The one-pass condenser, heat exchanger shown in the sketch has 64 tubes arranged in a square array

Question:

The one-pass condenser, heat exchanger shown in the sketch has 64 tubes arranged in a square array with 8 tubes per line. The tubes are 1.22 m long and are made of copper with an outside diameter of 1.27 cm. They are contained in a shell at atmospheric pressure. Water flows inside the tubes, whose outside wall temperature is 98ºC. Calculate

(a) The rate of steam condensation

(b) The temperature rise of the water if the flow rate per tube is 0.0454 kg/s