In a heat exchanger, hot gasses enter with a temperature of 250°𝐶 and leave at 50°𝐶. On the other side, air enters at a temperature of 50°𝐶 and leaves at 90°𝐶. The effectiveness of the exchanger is to be quoted as:
A. 0.15
B. 0.20
C. 0.25
D. 0.30
Answer:B
In a heat exchanger, hot gasses enter with a temperature of 250°𝐶 and leave at 50°𝐶. On the other side, air enters at a temperature of 50°𝐶 and leaves at 90°𝐶. The effectiveness of the exchanger is to be quoted as:
A. 0.15 B. 0.20 C. 0.25 D. 0.30