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GATE Mechanical Engineering (ME) 2020 Shift 1 Solved Paper

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Question : 23

Total: 65

In a concentric tube counter-flow heat exchanger, hot oil enters at 102∘C and leaves at 65∘C. Cold water enters at 25∘C and leaves at 42∘C. The log mean temperature difference (LMTD) is ______________‌∘C (round off to one decimal place).

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