Decoupled modeling of chilled-water cooling coils

Wang Gang, Liu Mingsheng, David E. Claridge

Research output: Contribution to journalConference article

10 Scopus citations

Abstract

Chilled-water cooling coils are important components in air-handling systems. Generally, the cooling coil removes both moisture and sensible heat from entering air. Because the sensible and latent heat transfer modes are coupled and the saturation humidity ratio vs. temperature curve on the psychrometric chart is nonlinear, it is very difficult to solve cooling coil heat transfer differential equations across the entire coil. However, the sensible and latent heat transfer modes can be decoupled using a constant sensible heat ratio (SHR), and the saturation humidity ratio vs. temperature curve can be treated as linear in a small area corresponding to a finitie element of the coil. Then element equations can be easily deduced from decoupled sensible and latent heat transfer differential equations using the effectiveness-NTU method. This paper presents the decoupled cooling coil model using the finite element method with applications to simulation of particular cooling coil cases.

Original languageEnglish (US)
Pages (from-to)484-493
Number of pages10
JournalASHRAE Transactions
Volume113 PART 1
StatePublished - Aug 23 2007
Externally publishedYes
Event2007 Winter Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Dallas, TX, United States
Duration: Jan 27 2007Jan 31 2007

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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    Gang, W., Mingsheng, L., & Claridge, D. E. (2007). Decoupled modeling of chilled-water cooling coils. ASHRAE Transactions, 113 PART 1, 484-493.