Experiment investigation of an ejector-enhanced regenerative refrigeration system with zeotropic mixture

Weiqing Wang, Ye Liu and Jiaheng Chen

Energy, 2025, vol. 334, issue C

Abstract: This study presents an experimental investigation of an ejector-enhanced regenerative refrigeration system (ERRS) with zeotropic refrigerant R290/R170. Performance comparisons were conducted between the ERRS and a conventional refrigeration cycle under specified operating conditions. The effects such as throttle valve opening, ambient temperature, mass fraction ratio of the refrigerant mixture, primary flow valve opening and nozzle exit position (NXP) on the performance characteristics of the ERRS were analyzed. The results showed that the ERRS outperformed the conventional cycle in achieving lower cooling temperatures and higher energy efficiency. Specifically, the system COP and exergy efficiency of the ERRS showed improvements of up to 11.0 % and 41.2 % respectively. The study identified that the mass fraction ratio of R170 significantly influences the system COP. However, the refrigeration capacity of the ERRS is slightly affected by the primary fluid valve opening and nozzle exit position. Therefore, the modified ERRS shows potential advantages for low-temperature freezer applications.

Keywords: Experimental investigation; Ejector; Zeotropic refrigerant; Performance improvement (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225034978
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:334:y:2025:i:c:s0360544225034978

DOI: 10.1016/j.energy.2025.137855

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().