文档介绍：Renewable Energy 46 (2012) 155e163
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Renewable Energy
journal homepage: ate/renene
Geometry parameters effect for air-cooled ejector cooling systems with R134a
refrigerant
Jia Yan a, Wenjian Cai a,*, Yanzhong Li b
a EXQUISITUS, Centre for E-City, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
b School of Energy and Power Engineering, Xi’an Jiaotong University, 710049, PR China
article info abstract
Article history: In this paper, a CFD model calibrated by the experimental results from initial designed ejector is used to
Received 7 September 2011 evaluate the influence of 6 key geometry parameters on the performance (entrainment ratio) of an air-
Accepted 20 March 2012 cooled ejector cooling system and, consequently, to find the best design parameters. A new ejector
Available online 8 April 2012
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:
Keywords: 1) the optimal area ratio, the ratio of primary nozzle exist position and length of constant-area mixing
Ejector cooling systems
section to primary nozzle diameter are lower than those of water-cooled ejector systems; 2) the optimal
Air-cooled
G