Thermodynamic possiblity for outlet temperatures of heat exchanger

AI Thread Summary
The discussion centers on the thermodynamic feasibility of achieving an exhaust outlet temperature of 40°C and a water outlet temperature of 50°C in a shell and tube heat exchanger. It is confirmed that this scenario is thermodynamically possible if the heat exchanger operates in a countercurrent configuration, allowing for efficient heat transfer. The temperature difference between the exhaust gas and the water facilitates heat recovery, making the specified outlet temperatures achievable. The flow arrangement plays a crucial role in determining the effectiveness of heat exchange. Overall, the proposed temperatures are feasible under the right conditions.
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TL;DR Summary
Temperatures of exhaust gas and water at heat-exchanger outlet
I have a heat & mass balance diagram wherein there is a shell and tube heat exchanger to recover heat from hot exhaust gas using cold water. The exhaust gas inlet temperature is 120°C and the outlet is at 40°C. The inlet water temperature is 35°C while the outlet water temperature is at 50°C.

I wish to know, that whether an exhaust outlet of 40°C and water outlet of 50°C is thermodynamically possible?

Kindly provide reasons also.
 
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