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Log
Mean Temperature Difference - Heat Transfer
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[ Heat
Transfer Table of Contents]
In heat exchanger applications, the inlet and
outlet temperatures are commonly specified based on
the fluid in the tubes. The temperature change that takes
place across the heat exchanger from the
entrance to the exit is not linear. A precise temperature
change between two fluids across the
heat exchanger is best represented by the log mean
temperature difference (LMTD or DTlm),
defined in Equation 2-2.
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