Thermodynamic comparison of ejector cooling cycles. Ejector characterisation by means of entrainment ratio and compression efficiency

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• 作者：J.A. Expó ; sito Carrillo^a ; ^{jose.expositocarrillo@alum.uca.es} ; F.J. Sá ; nchez de La Flor^a ; J.M. Salmeró ; n Lissé ; n^b
• 关键词：Ejector cooling systems ; Entrainment ratio ; Compression efficiency ; COP
• 刊名：International Journal of Refrigeration
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：74
• 期：Complete
• 页码：371-384
• 全文大小：1445 K
• 卷排序：74

文摘

An ejector cooling cycle model has been implemented to study the performance of the cycles. Comparison between different typologies of ejector cooling cycles and refrigerants has been assessed. A good agreement between experimental data found in literature and the ejector model has been obtained. A new ejector efficiency has been proposed as a function of the area ratio and the entrainment ratio. The results show a methodology which makes easier the simulation of the working conditions of an ejector cooling cycle. Thanks to the model proposed, the best combination between the cycle configuration, the refrigerant and the working conditions has been found.