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You are given an adiabatic heat exchanger to analyze. The heat exchanger exchanges heat between air and water.

Air enters and leaves the heat exchanger with the following properties:

Inlet
- Mass flow rate: 2 kg/s
- Pressure: 125 kPa
- Temperature: 1000 K
- Velocity: 10 m/s

Exit
- Pressure: 100 kPa
- Temperature: 400 K
- Velocity: 8 m/s

Water enters and leaves the heat exchanger with the following properties:

Inlet
- Mass flow rate: 0.5 kg/s
- Pressure: 200 kPa
- Temperature: 20 degrees Celsius (293.15 K)
- Velocity: 2 m/s
Exit
- Pressure: 200 kPa
- Velocity: 2 m/s

Find the exit temperature of the water.



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