化学工程2017，Vol.45Issue(4)：39-44,6.DOI:10.3969/j.issn.1005-9954.2017.04.009
用于能量回收的有机朗肯循环混合工质研究
Analysis of organic rankine cycle mixtures used in energy recovery
摘要
Abstract
The utilization of low-temperature waste heat attracted more and more attention.The organic rankine cycle,in which low temperature waste heat and LNG cold energy are combined application,also arouses widespread concern.The circulating refrigerant selection is regarded as key factor to improve its thermal performance.Aiming at circulating refrigerant selection,11 substances were adopted as subcritical organic Rankine cycle working fluid,including R236ea,R245fa and 9 binary mixtures in different mass ratio,combined with pinch analysis method,thermal economy of the system and the thermodynamic properties under two optimal design conditions were calculated.The results show that the mixtures of R236ea/R245fa(0.9/0.1) and R236ea/R245fa (0.8/0.2) are the best circulating refrigerant under designed conditions optimal thermal energy recovery efficiency and the best cold energy recovery efficiency respectively;under above two designed conditions,binary refrigerant have better thermal economy compared with pure refrigerant;as the ratio of R236ea in the binary refrigerant increased,the heat transfer area was decreased effectively and the system thermal economy was improved,which can provide references for refrigerant selection of subcritical organic Rankine cycle,in which low temperature waste heat and LNG cold energy were combined application.关键词
低温余热/LNG/有机朗肯循环/混合工质/(火用)/热力学/热经济Key words
low-temperature waste heat/liquified natural gas/organic rankine cycle/mixed working fluid/exergy/thermodynamics/thermal economics分类
能源科技引用本文复制引用
仇阳,吕振波,潘振,李萍,乔伟彪,宗月,陈树军..用于能量回收的有机朗肯循环混合工质研究[J].化学工程,2017,45(4):39-44,6.基金项目
国家自然科学基金资助项目(51306210) （51306210）
