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Air-side data interpretation and performance analysis for heat exchangers with simultaneous heat and mass transfer: wet and frosted surfaces.

Author(s) : XIA Y., JACOBI A. M.

Type of article: Article

Summary

Data reduction methods for wet- and frosted-surface heat exchangers are reviewed, and logarithmic-mean temperature difference (LMTD) and logarithmic-mean enthalpy difference (LMED) methods for data interpretation are formulated, including fin efficiency expressions for flat-tube heat exchangers with constant-area fins. With these improved formulations for data interpretation in place, the two methods are compared using a numerical simulation of a flat-plate heat exchanger. For all conditions considered - spanning wet and frosted surfaces - the new UA-LMTD method provides the air-side convective heat transfer coefficient to within 3% and is more accurate than the HA-LMED method, which results in large errors under some conditions. [Reprinted with permission from Elsevier, Copyright, 2005].

Details

  • Original title: Air-side data interpretation and performance analysis for heat exchangers with simultaneous heat and mass transfer: wet and frosted surfaces.
  • Record ID : 2006-1658
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 48 - n. 25-26
  • Publication date: 2006/04

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