Performance of an advanced absorption cycle with R 125 and different absorbents

A. Levy, M. Jelinek, I. Borde, F. Ziegler

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The performance of an advanced triple-pressure level (TPL) single-stage absorption cycle with refrigerant R125 and various organic absorbents were studied. In the developed TPL cycle, a jet ejector of a special design is added at the absorber inlet. The device serves two major functions: it facilitates pressure recovery and improves the mixing process between the weak solution and the refrigerant vapor coming from the evaporator. These effects enhance the absorption process of the refrigerant vapor into the solution drops. To facilitate the design of a jet ejector for absorption machines, a numerical model of simultaneous heat and mass transfer between the liquid and the gas phases in the ejector was developed. Based on the computerized simulation program, a parametric study of a TPL cycle was carried out. Comparison was made between the performances of the TPL and the common double pressure level (DPL) absorption cycle with refrigerant R125 and various organic absorbents. In addition, the influence of the jet ejector on the performance of the absorption cycle and the size of the unit was studied.

Original languageEnglish
Pages (from-to)2501-2515
Number of pages15
JournalEnergy
Volume29
Issue number12-15 SPEC. ISS.
DOIs
StatePublished - 1 Jan 2004

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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