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| Q.37 | The athematic mean temperature difference for counter-flow heat exchanger when hot water side temperatures are 90°C and 40°C, while cold side temperatures are 20° and 40°C | |
| Ans | 1. 35 °C | |
| 2. 70 °C | ||
| 3. 25 °C | ||
| 4. 55 °C |
Correct Ans Provided: 1
