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International journal of refrigeration = Revbue internationale du froid v.74, 2017년, pp.86 - 94   SCI SCIE
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Analyse thEorique et optimisation d'un cycle de refroidissement hybride transcritique au CO2 A compression mEcanique-Ejecteur
Theoretical analysis and optimization of a hybrid CO2 transcritical mechanical compression – ejector cooling cycle

Chen, Guangming (Ningbo Institute of Technology, Zhejiang University, 1, QuianHu South Road, Ningbo City, 315100 Zhejiang Province, China ); Volovyk, Oleksii ( Ningbo Institute of Technology, Zhejiang University, 1, QuianHu South Road, Ningbo City, 315100 Zhejiang Province, China ); Zhu, Daibin ( Aux Electric Co. Ltd., 1166 Mingguang Road, Ningbo City, 315100 Zhejiang Province, China ); Ierin, Volodymyr ( Ejector Refrigeration Technologies Center, Odessa National Academy of Food Technologies, 112, Kanatnaya Str., Odessa 65039, Ukraine ); Shestopalov, Kostyantyn ( Ningbo Institute of Technology, Zhejiang University, 1, QuianHu South Road, Ningbo City, 315100 Zhejiang Province, China );
  • 초록  

    Abstract The paper provides the results of a design-theoretical study of a hybrid carbon dioxide (CO 2 ) transcritical mechanical compression – ejector cooling cycle. The hybrid cooling cycle is a combination of a CO 2 transcritical mechanical compression refrigeration machine (MCRM) powered by electricity, and an ejector cooling machine (ECM) driven by heat rejected from the CO 2 cooling cycle. Refrigerants R245ca, R601b (neopentane) and R717 (ammonia) are investigated as the working fluids of ECM in the present study. A method to determine the optimal design parameters and performance of the hybrid cooling cycle is presented. It is shown, that efficiency growth of the transcritical CO 2 cooling cycle due to ejector cooling cycle use is higher as evaporating temperatures are lower. Highlights A hybrid CO 2 transcritical mechanical compression – ejector cooling cycle is studied. A method for determination of the optimal design parameters of the hybrid cycle is presented. Hybrid cycle efficiency increases as evaporating temperature decreases.


  • 주제어

    CO2 .   Transcritical cooling cycle .   Ejector .   Hybrid cooling cycle .   Optimal design conditions .   CO2 .   Cycle de refroidissement transcritique .   Éjecteur .   Cycle de refroidissement hybride .   Conditions optimales de conception.  

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