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Performance improvement of an absorption refrigeration system using a triple-pressure level.

Author(s) : SÖZEN A., ÖZALP M.

Type of article: Article

Summary

In an absorption refrigeration system (ARS) working with water-ammonia, the ejector is commonly located at the condenser inlet. In this study, the ejector was located at the absorber inlet. Therefore, the absorber pressure becomes higher than the evaporator pressure and the system works with a triple-pressure level. Energy analyses show that the system's coefficient of performance (COP) and exergetic coefficient of performance (ECOP) were improved by 49% and 56%, respectively and the circulation ratio (f) was reduced by 57% when ARS was initiated at lower generator temperatures. Due to the reduced circulation ratio, the system dimensions can be reduced; consequently, this decreases the overall cost. Exergy analyses show that the exergy loss of the absorber of ARS with ejector had a higher exergy loss than those of the other components. Therefore, a multiple compartment absorber can be proposed to reduce the exergy loss of the absorber of ARS with ejector.

Details

  • Original title: Performance improvement of an absorption refrigeration system using a triple-pressure level.
  • Record ID : 2004-0581
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 23 - n. 13
  • Publication date: 2003/09

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