期刊文献+

跨临界CO_2活塞压缩机阀片运动特性的实验研究 被引量:4

Experiment on Discharge Valve Dynamics of Reciprocating Compressor in Trans-Critical CO_2 Refrigeration Cycle
下载PDF
导出
摘要 针对跨临界CO2制冷循环中CO2工质的高密度和大压差影响阀片设计的问题,建立了专项的压缩机阀片位移实验装置和p-V图实验装置,由此展开了压缩机排气阀片的动态运动规律的实验研究,结果表明:影响阀片运动的主要因素包括压比、阀片升程、阀片厚度、弹簧刚度和压缩机转速等.实验测试表明:低压比、小升程有助于提高阀片的可靠性,高转速可以提高压缩机的容积效率,但同时提高了阀片的撞击速度;降低吸、排气过程的能量损失,尤其是排气起始阶段的能量损失,有助于提高压缩机的效率. A test system for measuring valve displacement and p-V diagrams was established and the experiment on the dynamics of the discharge valves was conducted to understand the influences of the large density and high pressure difference across the reciprocating compressor valves on the valve dynamics in a transcritical CO2 refrigeration cycle.The results show that main factors affecting the valve movement include pressure ratio,valve lift,valve thickness,spring stiffness,and compressor speed.Moreover,a lower pressure ratio and smaller valve lift would enhance the valve reliability.A higher rotation speed would raise the volumetric efficiency of the compressor while it would increase the valve impact velocity.It appears that the compressor efficiency could be improved by reducing the energy loss in the suction and discharge process,especially in the beginning period of the discharge process.
出处 《西安交通大学学报》 EI CAS CSCD 北大核心 2011年第3期25-29,共5页 Journal of Xi'an Jiaotong University
基金 国家高技术研究发展计划资助项目(2006AA05Z234)
关键词 往复压缩机 跨临界循环 二氧化碳 阀片 reciprocating compressor transcritical cycle carbon dioxide valve
  • 相关文献

参考文献5

  • 1LORENTZEN G. Revival of carbon dioxide as a refrigerant [J]. International Journal of Refrigeration, 1994, 17 (5): 292-301.
  • 2KIM M H, PET'I'ERSEN J, BULLARD C W. Fun- damental process and system design issues in CO2 va- por compression systems [C] // Progress in Energy and Combustion Science. Kevin Partridge, USA: Elsevier Ltd. , 2004 : 119-174.
  • 3SOEDEL W. Design and mechanics of compressor valves [M]. West Lafayette, IN,USA: Purdue Uni- versity, 1984.
  • 4西安交通大学压缩机教研室.活塞式压缩机气阀阀片运动的光电测定法.西安交通大学学报,1976,10(1):133-138.
  • 5MA Y, GAN Y N, PENG X Y, et al. Experimental investigation of the dynamics of self-acting valve in a reciprocating compressor for transeritical C02 refrige-ration [C]//19th International Compressor Engineer- ing Conference. West Lafayette, IN, USA: Purdue University, 2008 : 1126.

同被引文献39

引证文献4

二级引证文献15

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部