Preliminary experimental results on the R134a refrigeration system using a two-phase ejector as an expander
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCI LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The use of an ejector as an expansion device instead of an expansion valve for expansion work recovery in a vapor-compression cycle was experimentally investigated. The coefficient of performance (COP) values for both conventional and ejector systems were experimentally investigated under the same external conditions. It was observed that, although the drop in the refrigerant pressure in the evaporator of the ejector system was almost negligible, it rose as high as 133 kPa in the conventional system. Depending on the operating conditions, it was found that the work recovery in the ejector was between 14% and 17%. It was also found that the refrigeration system with an ejector as the expander exhibited a COP that was 6.2-14.5% higher than that of the conventional system. The experimental results were found to comply with the theoretical results within an error of approximately 10%. (C) 2014 Elsevier Ltd and IIR. All rights reserved.
Açıklama
Anahtar Kelimeler
Refrigeration, Ejector, Throttling, Expansion, COP, R134a
Kaynak
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
43
