Computation of the Logarithmic Mean Temperature Difference

J. Heat Transfer 128(1), 84-86 (Jan 31, 2005) (3 pages) doi:10.1115/1.2130406 History: Received April 15, 2004; Revised January 31, 2005

The original formula for the computation of the logarithmic mean temperature difference in finite precision floating-point arithmetic may suffer from serious round-off problems when both temperature differences are very close to each other. An alternative, mathematically equivalent, yet simple formula showing better numerical properties is presented.

Copyright © 2006 by American Society of Mechanical Engineers
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