Q) Oil (assume engine oil) used in a quenching operation is to be cooled with a plate and frame heat exchanger

Q) Oil (assume engine oil) used in a quenching operation is to be cooled with a plate and frame heat exchanger. The oil flows into the heat exchanger at 20 gpm, 175°F, and must be cooled to 160°F. Water enters the heat exchanger at 90°F and can exit at a temperature that is no warmer than 105°F. The heat exchanger contains plates (6 in. wide) made of 304SS (stainless steel), 0.0242in. thick, and spaced 0.14 in. apart. The heat transfer area of one plate is 0.94 ft . How many plates would be needed to cool the oil to the required temperature? Is the condition on the water outlet temperature met by this exchanger? Take the flow rate of water to be 15 gpm.