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Investigation on the adaptivity of the transcritical CO2 refrigeration system with a capillary


Song, Y and Wang, J and Cao, F and Shu, P and Wang, X, Investigation on the adaptivity of the transcritical CO2 refrigeration system with a capillary, International Journal of Refrigeration, 79 pp. 183-195. ISSN 0140-7007 (2017) [Refereed Article]

Copyright Statement

2017 Elsevier Ltd and IIR. All rights reserved.

DOI: doi:10.1016/j.ijrefrig.2017.04.013


In order to research the adaptivity of the capillary tube in the transcritical CO2 refrigeration system, a separated flow model of a CO2 capillary in which the metastable phenomenon was taken into consideration was built in the simulation of transcritical CO2 refrigeration system, and related experiments were carried out by a plant under different gas-cooler outlet temperatures. The performances of the capillary based system were further compared with that of the EEV (electronic expansion valve) based system. The results showed that the relative COP ranged from 82% to 98% when there was a 10C deviation between the real gas-cooler outlet temperature and the design value. Thus the capillary based transcritical CO2 system is promising and could achieve performance close to that of EEV based system in a wide range of gas-cooler outlet temperature.

Item Details

Item Type:Refereed Article
Keywords:adaptivity, capillary tube, metastable state, transcritical CO2 refrigeration
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Mechanical engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Wang, X (Professor Xiaolin Wang)
ID Code:118155
Year Published:2017
Web of Science® Times Cited:7
Deposited By:Engineering
Deposited On:2017-07-05
Last Modified:2018-06-15

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