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Mechanical Engineering

what is logarithmic temparature difference?

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Log Mean Temperature Difference or LMTD is the driving force for the amount of exchanged heat by a heat exchanger. LMTD approach is quite straight forward and simple. But this approach cannot be used for the cases, where phase change occurs in the heat exchanger. Also, if the specific heats of the fluids change then the LMTD approach cannot be used.

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