Q. For a counter current heat exchanger with Ti h = 80°C, T°c = 60°C, T°h = 50°C and Ti c = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy (Solved)
1. d 2T/dZ2 > 0
2. d 2T/dZ2 = 0
3. d 2T/dZ2 < 0
4. dT/dZ = 0
- b. d 2T/dZ2 = 0