Question: Hot oil at a flow rate of 3.00 kg/s (CP = 1.92 kJ/kg-K) enters a double pipe heat exchanger

Hot oil at a flow rate of 3.00 kg/s (CP = 1.92 kJ/kg-K) enters a double pipe heat exchanger at 400 K and is cooled by water entering at 325 K (under pressure) and flowing at a rate of 0.70 kg/s. The overall U = 350 W/m2 -K and A = 12.9 m2 . Calculate the heat transfer rate, the exit oil temperature and the exit water temperature for (a) counterflow arrangement, and (b) parallel flow arrangement. Hot oil at a flow rate of 3.00 kg/s (CP = 1.92 kJ/kg-K) enters a double pipe heat exchanger at 400 K and is cooled by water entering at 325 K (under pressure) and flowing at a rate of 0.70 kg/s. The overall U = 350 W/m2 -K and A = 12.9 m2 . Calculate the heat transfer rate, the exit oil temperature and the exit water temperature for (a) counterflow arrangement, and (b) parallel flow arrangement.

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