In a heat exchanger, water (c p = 4200 J/kg/K) flows at a rate of 1.5 kg/s,

Question:

In a heat exchanger, water (c_p = 4200 J/kg/K) flows at a rate of 1.5 kg/s, and toluene (c_p = 1953 J/kg/K) flows at a rate of 2.2 kg/s. The water enters at 50°C and leaves at 90°C, and the toluene enters at 190°C. For this situation, do the following:

Sketch the T–Q diagram if the flows are countercurrent.

Sketch the T–Q diagram if the flows are concurrent.