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|Title:||Geometry parameters effect for air-cooled ejector cooling systems with R134a refrigerant||Authors:||Yan, Jia
|Issue Date:||2012||Source:||Yan, J., Cai, W., & Li, Y. (2012). Geometry parameters effect for air-cooled ejector cooling systems with R134a refrigerant. Renewable Energy, 46, 155-163.||Series/Report no.:||Renewable energy||Abstract:||In this paper, a CFD model calibrated by the experimental results from initial designed ejector is used to evaluate the influence of 6 key geometry parameters on the performance (entrainment ratio) of an air-cooled ejector cooling system and, consequently, to find the best design parameters. A new ejector according to the findings from the CFD simulation is then designed and used at the same air-cooled ejector system to verify the simulation results. From both simulation and testing results, we find that: 1) the optimal area ratio, the ratio of primary nozzle exist position and length of constant-area mixing section to primary nozzle diameter are lower than those of water-cooled ejector systems; 2) the optimal converging angle of constant-pressure mixing section and the ratio of primary nozzle exit position and length of constant-area mixing section to the diameter of constant-area mixing section are very close to those of water-cooled ejector systems; 3) substantial performance improvement can be achieved by using the new parameters in the ejector design.||URI:||https://hdl.handle.net/10356/98046
|ISSN:||0960-1481||DOI:||http://dx.doi.org/10.1016/j.renene.2012.03.031||Rights:||© 2012 Elsevier Ltd.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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