1. (a) Hot oil at a flow rate of 5.5 kg/s (average cp = 1.92 kJ/kgK) enters an existing counter-flow exchanger at 435 K and is cooled by water entering at 325 K (under pressure) and flowing at a rate...

Extracted text: 1. (a) Hot oil at a flow rate of 5.5 kg/s (average cp = 1.92 kJ/kgK) enters an existing counter-flow exchanger at 435 K and is cooled by water entering at 325 K (under pressure) and flowing at a rate of 7.2 kg/s and the water exit temperature is 350 K. The overall heat transfer coefficient based on the outside area is 685 W/m²K (Average specific heat of water is 4.187 kJ/kgK). (i) Calculate the exit oil temperature. (ii) Calculate the heat transfer area. (b) The fluid in (a) enters an existing co-current-flow exchanger at the same conditions. (i) Calculate the heat transfer area. (ii) Explain the performance of both heat exchangers.