首页 | 本学科首页   官方微博 | 高级检索  
     检索      

润滑油对带膨胀机CO2跨临界循环的影响
引用本文:孙方田,马一太,李敏霞,汪耀东.润滑油对带膨胀机CO2跨临界循环的影响[J].工程热物理学报,2007,28(3):369-372.
作者姓名:孙方田  马一太  李敏霞  汪耀东
作者单位:天津大学热能研究所,天津,300072
基金项目:国家自然科学基金 , 天津市自然科学基金
摘    要:本文对PAG、POE、PAO和AB四种润滑油特性进行了分析,结果表明PAG具有较好的综合性能.又从PAG/CO2混合物的溶解性和粘温特性证明了PAG比较适合CO2跨临界循环.最后对工质CO2夹带的微量PAG对压缩机、膨胀机、气体冷却器和蒸发器的性能影响分别进行了分析,并提出了超临界换热分析模型.结果表明润滑油虽然有助于改善压缩机、膨胀机性能,但造成了换热器性能的严重下降.

关 键 词:润滑油  CO2跨临界循环  PAG/CO2
文章编号:0253-231X(2007)03-0369-04
修稿时间:2007年1月23日

THE EFFECT OF LUBRICANT ON SYSTEM OF CARBON DIOXIDE TRANSCRITICAL CYCLE WITH EXPANDER
SUN Fang-Tian,MA Yi-Tai,LI Min-Xia,WANG Yao-Dong.THE EFFECT OF LUBRICANT ON SYSTEM OF CARBON DIOXIDE TRANSCRITICAL CYCLE WITH EXPANDER[J].Journal of Engineering Thermophysics,2007,28(3):369-372.
Authors:SUN Fang-Tian  MA Yi-Tai  LI Min-Xia  WANG Yao-Dong
Abstract:The characteristic of synthetic lubricant PAG,POE,PAO and AB had been analyzed, and was verified that PAG with better over-all properties.Both solubility and viscosity-temperature properties of PAG/CO_2 mixtures also showed that PAG suited system of carbon dioxide transcritical cycle.The effects of little of lubricant in CO_2 on the performance of compressor,expander gas-cooler and evaporator were analyzed,and the model of supercritical heat transfer was also proposed.It found that PAG is favorable to improve performances of compressor and expander,but reduce heavily performance of heat exchanger.
Keywords:refrigeration lubricant  carbon dioxide transcritical cycle  PAG/CO_2 mixture
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号