The performance of a triple pressure level absorption cycle (TPLAC) with working fluids based on the absorbent DMEU and the refrigerants R22, R32, R124, R125, R134a and R152a

M. Jelinek, A. Levy, I. Borde

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

This paper compares the performance of a single-stage triple pressure level (TPL) absorption cycle with different refrigerant-absorbent pairs. Four HFC refrigerants namely: R32, R125, R134a and R152a which are alternative to HCFC, such as R22 and R124, in combination with the absorbent dimethylethylenurea (DMEU) were considered. The highest coefficient of performance (COP) and the lowest circulation ratio (f), were found as a function of the generator temperature for a given evaporating and cooling water temperatures. The sensitivity of the COP and f for evaporator and cooling water temperatures changes at the maximum COP for the best three working fluids were also examined. It was obtained that the preferable pair is R124-DMEU and among working fluids based on HFC the preferable pair is the R125-DMEU.

Original languageEnglish
Pages (from-to)1551-1555
Number of pages5
JournalApplied Thermal Engineering
Volume28
Issue number11-12
DOIs
StatePublished - 1 Aug 2008

Keywords

  • Absorption refrigeration
  • Organic working fluids
  • Triple pressure level cycle

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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