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Indexed by:期刊论文

Date of Publication:2012-06-01

Journal:ENERGY AND BUILDINGS

Included Journals:SCIE、EI

Volume:49

Page Number:209-215

ISSN No.:0378-7788

Key Words:Ejector; Refrigeration; Computational fluid dynamics; R236fa

Abstract:The ejector performance is numerically and experimentally studied using R236fa as working fluid to analyze the influence of the key geometries of ejector. The computational fluid dynamics (CFD) was employed to predict the flow process and performance of the ejector. A case study was provided in this paper, in which the angles of nozzle outlet were 8 degrees, 10 degrees and 14 degrees, the distance of nozzle exit to mixing chamber was varied as 23 and 33 mm and the length of diffuser was varied as 88 and 103 mm. The CFD results were verified with an experiment. It can be concluded that, the ejector with the nozzle outlet angle of 8 degrees. the distance of nozzle exit to mixing chamber of 23 mm and the diffuser length of 88 mm has the best performance. (C) 2012 Elsevier B.V. All rights reserved.