Cold distilled water is being used to cool a 30% ethylene glycol solution in a 1-1/U counter flow plate and frame heat exchanger. The ethylene glycol solution flows at 14.5 kg/s and enters the heat exchanger at 32°C. The water enters the heat exchanger at a flow rate of 18.2 kg/s with a temperature of 15°C. The plates are AISI 316 stainless steel and have a 60° chevron pattern. The plates have a vertical port distance of 1.1 m and a horizontal port distance of 0.3 m. The plate width is 0.4 m. Each plate has a thickness of 0.8 mm and the plate pitch is 3.5 mm. There are 187 total plates in the heat exchanger. The port diameters are 63.5 mm. The fouling factor for the ethylene glycol solution can be taken as 5 × 10−7 m2-K/W. For the case of yearly maintenance on the heat exchanger, determine the,

a. Outlet temperature of each fluid (°C)

b. Pressure drop of each fluid as it passes through the heat exchanger (kPa)

c. Estimated maximum allowable pressure drop for either fluid (kPa)

d. Effectiveness of the heat exchanger