Development of high efficiency cycles for domestic refrigerator-freezer application

Mina Yang, Chung Woo Jung and Yong Tae Kang

Energy, 2015, vol. 93, issue P2, 2258-2266

Abstract: High efficiency 2-stage vapor compression cycles are developed for domestic refrigerator-freezer application. From the parametric analysis of the newly developed cycles, it is recommended that evaporators be connected in series while compressors be connected in parallel to obtain the highest COP (coefficient of performance) in domestic refrigerator-freezer systems. It is found that the most important parameter for performance improvement is the freezing load ratio (RQ˙F=Q˙F/Q˙total). It is also found that the degree of subcooling by the heat exchanger (ΔTsub=T2−T3) gives the most significant effect on m˙total. However, there are some difficulties in operating the newly developed cycle such as difficult individual operation of the evaporators. Therefore, this study proposes an advanced novel cycle with the evaporators connected in parallel and without the separator, which is named “two-circuit cycle with evaporating subcooler”. It is finally concluded that the refrigerants pair of (R/F) = (R152a/R600a) be the best candidate with the highest COP of 3.758 for the two-circuit cycle with evaporating subcooler.

Keywords: COP (coefficient of performance) improvement; Compressor arrangement; Domestic refrigerator-freezer; Evaporator arrangement; Reduction of refrigerant flow rate (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544215015054
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:93:y:2015:i:p2:p:2258-2266

DOI: 10.1016/j.energy.2015.10.127

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 ().