Modeling and analysis of gas coolers

X. Fang, C. W. Bullard, P. S. Hrnjak

Research output: Contribution to journalConference articlepeer-review


The mathematical model of gas coolers is the cornerstone of gas cooler design and system modeling of the CO2 transcritical cycle. Modeling is a powerful means to analyze the thermal performances of gas coolers. This paper proposes a mathematical model of gas coolers for calculating heat transfer and pressure drop at supercritical pressures in both transitional and fully developed turbulent regimes. Based on the mathematical model, a computer simulation program in EES for gas coolers is developed. Verification with experimental data is made thereafter. The model predictions describe 97% of the experimental data of the capacity within ±5% and 97% of the experimental data of the refrigerant temperatures at the gas cooler outlet with deviation within ±1°C.

Original languageEnglish (US)
Pages (from-to)4-13
Number of pages10
JournalASHRAE Transactions
Volume107 PART. 1
StatePublished - 2001
Externally publishedYes
EventASHRAE Transactions. -2001 Winter Meeting. - Atalanta, GA, United States
Duration: Jan 27 2001Jan 31 2001

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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