{"title":"A novel simulation method for CO2 ejector containing lubricant oil","authors":"Yue Liu , Fang Liu , Hailong Liu","doi":"10.1016/j.ijrefrig.2024.06.009","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, a novel simulation method (zoning simulation) for the CO<sub>2</sub> ejector containing lubricant oil is established. Firstly, the feasibility of the zoning simulation method is verified. Subsequently, the phase change model and turbulence model are selected for each section when using the zoning simulation method. The average relative discrepancy of entrainment ratio using zoning simulation is 8.696%, and the average relative discrepancy of entrainment ratio using overall simulation is 14.118%. The results demonstrate that the predicted entrainment ratio using zoning simulation outperforms entrainment ratio using overall simulation. Introducing the concepts of relative temperature and relative pressure, the average relative discrepancy of entrainment ratio using zoning simulation is reduced to 4.620 %, when both relative temperature and relative pressure greater than 1.</p></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Refrigeration-revue Internationale Du Froid","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0140700724002044","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
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Abstract
In this paper, a novel simulation method (zoning simulation) for the CO2 ejector containing lubricant oil is established. Firstly, the feasibility of the zoning simulation method is verified. Subsequently, the phase change model and turbulence model are selected for each section when using the zoning simulation method. The average relative discrepancy of entrainment ratio using zoning simulation is 8.696%, and the average relative discrepancy of entrainment ratio using overall simulation is 14.118%. The results demonstrate that the predicted entrainment ratio using zoning simulation outperforms entrainment ratio using overall simulation. Introducing the concepts of relative temperature and relative pressure, the average relative discrepancy of entrainment ratio using zoning simulation is reduced to 4.620 %, when both relative temperature and relative pressure greater than 1.
期刊介绍：
The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling.
As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews.
Papers are published in either English or French with the IIR news section in both languages.
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