HAKKINDA

  • ISSN: 2149-4916
  • E-ISSN: 2149-9373
  • Yayın Periyodu:
    Nisan - Ağustos - Aralık
  • Editör:İsmail ŞAHİN
  • Yıl: 2015
  • Cilt: 1
  • No: 1

THE EFFECT OF EJECTOR GEOMETRY ON PERFORMANCE OF EJECTOR-ABSORPTION REFRIGERATION SYSTEM

Tarık ÇAKIR, 

In this study, the effect of ejector geometry on performance of an ejector-absorption refrigeration system (EARS) operating with the aqua/ammonia was investigated. By using of the ejector, the obtained absorber pressure becomes higher than the evaporator pressure and thus the system works with triple-pressure-level. The ejector has four functions: it (i) aided pressure recovery from the evaporator, (ii) upgraded the mixing process and the pre-absorption by the weak solution of the ammonia coming from the evaporator, (iii) increased absorber temperature and (iv) pre-absorption in the ejector improves the efficiency of the EARS. Performance improvement by ejector geometry under maximum COP and ECOP conditions is around 2.3% for COP and 4.7% for ECOP. CFD analysis of the geometry of the ejector also functions defined in theory has been found to fulfill visually.

Anahtar Kelime: Absorption refrigeration system,  COP,  ejector

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