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

Yanping Xia, Anthony M. Jacobi

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Pages (from-to)5089-5102
Number of pages14
JournalInternational Journal of Heat and Mass Transfer
Volume48
Issue number25-26
DOIs
StatePublished - Dec 1 2005

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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