Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 77, Issue -, Pages 87-98Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2017.02.028
Keywords
HFO refrigerants; R134a; Refrigeration cycle; Single-phase ejector; Numerical modeling; Thermodynamic modeling
Categories
Funding
- Hydro-Quebec
- Ressources naturelles Canada (CanmetENERGIE-Varennes)
- Rio Tinto Alcan
Ask authors/readers for more resources
The present work reports a numerical analysis of a single-phase supersonic ejector working with R134a as well as hydrofluoroolefin (HFO) refrigerants R1234yf and R1234ze(E). Comparisons were made regarding the ejector performances under varying operating conditions and refrigerant mixture proportions. The calculations have been then extended to an existing ejector heat driven refrigeration cycle (EHDRC). R1234yf appears to be a good candidate for drop-in replacement of R134a in a real EHDRC, while using R1234ze(E) would induce some modifications due to its thermodynamic properties. Maintaining the same pressure ratio for the ejector would lead on one hand to better entrainment ratio using R1234ze(E) and on the other hand to reduced coefficient of performance (COP) and cooling power by 4.2% and 26.6% in average, respectively. Using R1234yf under the same conditions induces a decrease of 5.2% for the entrainment ratio, 9.6% for the COP and 19.8% for the cooling power in average. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available