Real exam questions on specialized knowledge in metallurgy and chemical engineering
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22. Regarding the outlet temperature t2 of the heat exchanger coolant selected to transfer the same amount of heat, which of the following statements is incorrect? A. The higher t2 is, the smaller the cost of the required equipment (heat transfer area A) will be. B. The higher t2 is, the smaller the average driving force for heat transfer, △tm, will be. C. The higher t2 is, the less cooling medium will be needed. D. The choice of the cooling medium outlet temperature t2 should be based on an economic comparison between the costs of equipment and operating expenses. Which one is correct?
Which expert can please explain this? Based on the image, it appears that the outlet temperature of the cooling medium has increased, which results in an increase in the value of the logarithmic mean temperature difference