Performance Analysis of Externally Pressurized Gas Journal Bearing Lubricated with Vapor of R134a in Centrifugal Compressor
The performance of an externally pressurized gas journal bearing lubricated with R134a vapor used in an oil-free refrigeration centrifugal compressor is calculated by solving Reynold equations with the finite difference method (CFD). The load capacity, stiffness and mass flow rate of refrigerant vap...
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| Veröffentlicht in: | Processes 2022-10, Vol.10 (10), p.2067 |
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| creator | Ma, Can Yang, Qichao Sun, Xiaohang Zhang, Kelong Li, Liansheng |
| description | The performance of an externally pressurized gas journal bearing lubricated with R134a vapor used in an oil-free refrigeration centrifugal compressor is calculated by solving Reynold equations with the finite difference method (CFD). The load capacity, stiffness and mass flow rate of refrigerant vapor under conditions of various operational parameters are obtained and compared with that in air gas bearings. In addition, the influences of the average clearance, eccentricity ratios and supply vapor pressure on the static characteristics of journal bearings are investigated and discussed in detail. It concluded that the optimal operation parameters of gas journal bearings lubricated with R134a vapor are different with air journal bearings. These factors should be considered in the design process of R134a refrigerant vapor gas journal bearings. |
| doi_str_mv | 10.3390/pr10102067 |
| format | Article |
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The load capacity, stiffness and mass flow rate of refrigerant vapor under conditions of various operational parameters are obtained and compared with that in air gas bearings. In addition, the influences of the average clearance, eccentricity ratios and supply vapor pressure on the static characteristics of journal bearings are investigated and discussed in detail. It concluded that the optimal operation parameters of gas journal bearings lubricated with R134a vapor are different with air journal bearings. These factors should be considered in the design process of R134a refrigerant vapor gas journal bearings.</description><identifier>ISSN: 2227-9717</identifier><identifier>EISSN: 2227-9717</identifier><identifier>DOI: 10.3390/pr10102067</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Carbon dioxide ; Centrifugal compressors ; Finite difference method ; Gas bearings ; Investigations ; Journal bearings ; Lubricants & lubrication ; Mass flow rate ; Mathematical analysis ; Parameters ; Performance evaluation ; Pressure distribution ; Refrigerants ; Refrigeration ; Static characteristics ; Stiffness ; Thrust bearings ; Turbogenerators ; Vapor pressure ; Vapors ; Velocity ; Viscosity ; Working conditions</subject><ispartof>Processes, 2022-10, Vol.10 (10), p.2067</ispartof><rights>COPYRIGHT 2022 MDPI AG</rights><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c293t-bfbd7953e2d492dea651c2c61da12259524f815270808d06dc2f43277e6565163</cites><orcidid>0000-0001-9832-6372</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Ma, Can</creatorcontrib><creatorcontrib>Yang, Qichao</creatorcontrib><creatorcontrib>Sun, Xiaohang</creatorcontrib><creatorcontrib>Zhang, Kelong</creatorcontrib><creatorcontrib>Li, Liansheng</creatorcontrib><title>Performance Analysis of Externally Pressurized Gas Journal Bearing Lubricated with Vapor of R134a in Centrifugal Compressor</title><title>Processes</title><description>The performance of an externally pressurized gas journal bearing lubricated with R134a vapor used in an oil-free refrigeration centrifugal compressor is calculated by solving Reynold equations with the finite difference method (CFD). The load capacity, stiffness and mass flow rate of refrigerant vapor under conditions of various operational parameters are obtained and compared with that in air gas bearings. In addition, the influences of the average clearance, eccentricity ratios and supply vapor pressure on the static characteristics of journal bearings are investigated and discussed in detail. It concluded that the optimal operation parameters of gas journal bearings lubricated with R134a vapor are different with air journal bearings. These factors should be considered in the design process of R134a refrigerant vapor gas journal bearings.</description><subject>Carbon dioxide</subject><subject>Centrifugal compressors</subject><subject>Finite difference method</subject><subject>Gas bearings</subject><subject>Investigations</subject><subject>Journal bearings</subject><subject>Lubricants & lubrication</subject><subject>Mass flow rate</subject><subject>Mathematical analysis</subject><subject>Parameters</subject><subject>Performance evaluation</subject><subject>Pressure distribution</subject><subject>Refrigerants</subject><subject>Refrigeration</subject><subject>Static characteristics</subject><subject>Stiffness</subject><subject>Thrust bearings</subject><subject>Turbogenerators</subject><subject>Vapor pressure</subject><subject>Vapors</subject><subject>Velocity</subject><subject>Viscosity</subject><subject>Working conditions</subject><issn>2227-9717</issn><issn>2227-9717</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpNUU1LAzEQXURB0V78BQFvQmsy2Ww2x1pqVQoWUa9Lmk1qpN2sk120-udNqaAzh_l67zHDZNk5oyPOFb1qkVFGgRbyIDsBADlUksnDf_lxNojxjSZTjJeiOMm-FxZdwI1ujCXjRq-30UcSHJl-dhZTvd6SBdoYe_RftiYzHcl96HcTcm01-mZF5v0SvdFdGn_47pW86DbgTuOR8VwT35CJbTr0rl8l1iRs2p1gwLPsyOl1tIPfeJo930yfJrfD-cPsbjKeDw0o3g2XbllLJbiFOldQW10IZsAUrNYMQCgBuSuZAElLWta0qA24nIOUthAJWvDT7GKv22J4723sqrf9BbECCaVgXEhIqNEelZa0lW9c6FCb5LXdeBMa63zqj2WeKwWqpIlwuScYDDGidVWLfqNxWzFa7R5S_T2E_wDNNnzQ</recordid><startdate>20221001</startdate><enddate>20221001</enddate><creator>Ma, Can</creator><creator>Yang, Qichao</creator><creator>Sun, Xiaohang</creator><creator>Zhang, Kelong</creator><creator>Li, Liansheng</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>LK8</scope><scope>M7P</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0001-9832-6372</orcidid></search><sort><creationdate>20221001</creationdate><title>Performance Analysis of Externally Pressurized Gas Journal Bearing Lubricated with Vapor of R134a in Centrifugal Compressor</title><author>Ma, Can ; Yang, Qichao ; Sun, Xiaohang ; Zhang, Kelong ; Li, Liansheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-bfbd7953e2d492dea651c2c61da12259524f815270808d06dc2f43277e6565163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Carbon dioxide</topic><topic>Centrifugal compressors</topic><topic>Finite difference method</topic><topic>Gas bearings</topic><topic>Investigations</topic><topic>Journal bearings</topic><topic>Lubricants & lubrication</topic><topic>Mass flow rate</topic><topic>Mathematical analysis</topic><topic>Parameters</topic><topic>Performance evaluation</topic><topic>Pressure distribution</topic><topic>Refrigerants</topic><topic>Refrigeration</topic><topic>Static characteristics</topic><topic>Stiffness</topic><topic>Thrust bearings</topic><topic>Turbogenerators</topic><topic>Vapor pressure</topic><topic>Vapors</topic><topic>Velocity</topic><topic>Viscosity</topic><topic>Working conditions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ma, Can</creatorcontrib><creatorcontrib>Yang, Qichao</creatorcontrib><creatorcontrib>Sun, Xiaohang</creatorcontrib><creatorcontrib>Zhang, Kelong</creatorcontrib><creatorcontrib>Li, Liansheng</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>ProQuest Biological Science Collection</collection><collection>Biological Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Processes</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ma, Can</au><au>Yang, Qichao</au><au>Sun, Xiaohang</au><au>Zhang, Kelong</au><au>Li, Liansheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance Analysis of Externally Pressurized Gas Journal Bearing Lubricated with Vapor of R134a in Centrifugal Compressor</atitle><jtitle>Processes</jtitle><date>2022-10-01</date><risdate>2022</risdate><volume>10</volume><issue>10</issue><spage>2067</spage><pages>2067-</pages><issn>2227-9717</issn><eissn>2227-9717</eissn><abstract>The performance of an externally pressurized gas journal bearing lubricated with R134a vapor used in an oil-free refrigeration centrifugal compressor is calculated by solving Reynold equations with the finite difference method (CFD). The load capacity, stiffness and mass flow rate of refrigerant vapor under conditions of various operational parameters are obtained and compared with that in air gas bearings. In addition, the influences of the average clearance, eccentricity ratios and supply vapor pressure on the static characteristics of journal bearings are investigated and discussed in detail. It concluded that the optimal operation parameters of gas journal bearings lubricated with R134a vapor are different with air journal bearings. These factors should be considered in the design process of R134a refrigerant vapor gas journal bearings.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/pr10102067</doi><orcidid>https://orcid.org/0000-0001-9832-6372</orcidid><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Carbon dioxide Centrifugal compressors Finite difference method Gas bearings Investigations Journal bearings Lubricants & lubrication Mass flow rate Mathematical analysis Parameters Performance evaluation Pressure distribution Refrigerants Refrigeration Static characteristics Stiffness Thrust bearings Turbogenerators Vapor pressure Vapors Velocity Viscosity Working conditions |
| title | Performance Analysis of Externally Pressurized Gas Journal Bearing Lubricated with Vapor of R134a in Centrifugal Compressor |
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