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Flow characteristics of tangential leakage in a scroll compressor for automobile heat pump with CO_(2) 被引量:5

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摘要 Tangential leakage loss reduction has great significance on improving the performance of scroll compressors.In this study,the flow field of a scroll compressor working with CO_(2) was numerically investigated.The development characteristics of the tangential leakage flow in different working chambers were carried out,which was obtained by analyzing the field quantities distributions.The impacts of the radial clearances and sidewall roughness on the tangential leakage were also taken into consideration,in order to explore the feasible method of the flow control for the tangential leakage in scroll compressors.Results showed that the tangential leakage flow had various characteristics in the suction and compression chambers due to the different interactions between the tangential leakage flow and mainstream.Owing to little reverse pressure gradient,the tangential leakage flow maintained the typical jet form in the suction chambers.By contrast,the mixing of the tangential leakage flow and mainstream induced the passage vortex and secondary flows in the compression chamber.The secondary flow was the primary factor that results in the occurrence of localized high temperature region rather than the tangential leakage.With the increase of the radial clearance,the volumetric efficiency declined and the discharge temperature increased rapidly.In terms of flow control of the tangential leakage,the increase of sidewall roughness by 2μm could achieve the same effect as the decrease of the radial clearance by 4μm,while the volumetric efficiency increased by almost 5%and average discharge temperature decreased by 5K.
出处 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2021年第5期971-983,共13页 中国科学(技术科学英文版)
基金 supported by the National Natural Science Foundation of China(Grant Nos.52006010 and 52006009)。
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  • 1郑宽宽,赵航,丰镇平.超临界二氧化碳离心压气机内部流动特性分析[J].工程热物理学报,2015,36(5):985-988. 被引量:12
  • 2Bergles A E.ExHFT for fourth generation heat transfer technology[].Experimental Thermal and Fluid Science.2002
  • 3Guo Z Y,Li D Y,Wang B X.Novel concept for convective heat transfer enhancement[].International Journal of Heat & Mass Transfer.1998
  • 4Tao W Q,Guo Z Y,Wang B X.Field synergy principle for enhancing convective heat transfer-its extension and numerical verification[].International Journal of Heat and Mass Transfer.2002
  • 5Tao W Q,He Y L,Wang Q W,et al.A unified analysis on enhancing single phase convective heat transfer with field synergy principle[].International Journal of Heat and Mass Transfer.2002
  • 6Patankar S V.Numerical Heat Transfer and Fluid Flow[]..1980
  • 7WEBB R L.Principles of enhanced heat transfer[]..1994
  • 8T S Zhao,Y J Song.Forced Convection in a Porous Medium Heated by a Permeable Wall Perpendicular to Flow Direction:Analyses and Measurements[].International Journal of Heat and Mass Transfer.2001
  • 9Shen,S,Liu,W,Tao,WQ.Analysis of field synergy on natural convective heat transfer in porous media[].Int Comm Heat Mass Transf.2003
  • 10Z G Qu,,W Q Tao,and Y L He.Three-Dimensional Numerical Simulation on Laminar Heat Transfer and Fluid Flow Characteristics of Strip Fin Surface With X-Arrangement of Strips[].Transactions of the A SME Journal of Heat Transfer.2004

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