Performance optimization of low-temperature geothermal organic Rankine cycles using axial turbine isentropic efficiency correlation
Present study deals with parametric optimization and performance evaluation of an air-cooled organic Rankine system for the low-temperature geothermal source, especially considering the effects of turbine isentropic efficiency. Turbine isentropic efficiency is predicted with turbine size parameter a...
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| Veröffentlicht in: | Journal of the Brazilian Society of Mechanical Sciences and Engineering 2018-02, Vol.40 (2), p.1-11, Article 61 |
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| container_title | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
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| creator | Zhang, Chao Fu, Jinglun Kang, Jun Fu, Wencheng |
| description | Present study deals with parametric optimization and performance evaluation of an air-cooled organic Rankine system for the low-temperature geothermal source, especially considering the effects of turbine isentropic efficiency. Turbine isentropic efficiency is predicted with turbine size parameter and volume ratio, using the well-known correlation for single-stage axial turbine. Optimal performances with the objective of maximizing system exergy efficiency are compared with the common used working fluid R245fa and two environmental friendly working fluids R1234ze(E) and R1234ze(Z). Highest turbine isentropic efficiency is achieved for working fluid R1234ze(Z). The optimal turbine inlet vapor is overheating for Working fluid R1234ze(E) with the limitation of allowable minimum geothermal brine reinjection temperature. Due to the influence of turbine isentropic efficiency, optimal system exergy efficiency for working fluid R1234ze(E) is 0.4576 for the 100 kg/s geothermal source, which is slightly higher than the value of 0.4487 for the 10 kg/s geothermal source. |
| doi_str_mv | 10.1007/s40430-018-0996-9 |
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Turbine isentropic efficiency is predicted with turbine size parameter and volume ratio, using the well-known correlation for single-stage axial turbine. Optimal performances with the objective of maximizing system exergy efficiency are compared with the common used working fluid R245fa and two environmental friendly working fluids R1234ze(E) and R1234ze(Z). Highest turbine isentropic efficiency is achieved for working fluid R1234ze(Z). The optimal turbine inlet vapor is overheating for Working fluid R1234ze(E) with the limitation of allowable minimum geothermal brine reinjection temperature. Due to the influence of turbine isentropic efficiency, optimal system exergy efficiency for working fluid R1234ze(E) is 0.4576 for the 100 kg/s geothermal source, which is slightly higher than the value of 0.4487 for the 10 kg/s geothermal source.</description><identifier>ISSN: 1678-5878</identifier><identifier>EISSN: 1806-3691</identifier><identifier>DOI: 10.1007/s40430-018-0996-9</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Correlation analysis ; Efficiency ; Engineering ; Exergy ; Fluids ; Low temperature ; Mechanical Engineering ; Optimization ; Overheating ; Performance evaluation ; Reinjection ; Saline water ; Technical Paper ; Turbines ; Working fluids</subject><ispartof>Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2018-02, Vol.40 (2), p.1-11, Article 61</ispartof><rights>The Brazilian Society of Mechanical Sciences and Engineering 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c359t-b0d1773d930688e14f56e730bdd00d3413a63638dfd4e31eb2c3c7e8091641e63</citedby><cites>FETCH-LOGICAL-c359t-b0d1773d930688e14f56e730bdd00d3413a63638dfd4e31eb2c3c7e8091641e63</cites><orcidid>0000-0001-7455-6640</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s40430-018-0996-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s40430-018-0996-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Fu, Jinglun</creatorcontrib><creatorcontrib>Kang, Jun</creatorcontrib><creatorcontrib>Fu, Wencheng</creatorcontrib><title>Performance optimization of low-temperature geothermal organic Rankine cycles using axial turbine isentropic efficiency correlation</title><title>Journal of the Brazilian Society of Mechanical Sciences and Engineering</title><addtitle>J Braz. Soc. Mech. Sci. Eng</addtitle><description>Present study deals with parametric optimization and performance evaluation of an air-cooled organic Rankine system for the low-temperature geothermal source, especially considering the effects of turbine isentropic efficiency. Turbine isentropic efficiency is predicted with turbine size parameter and volume ratio, using the well-known correlation for single-stage axial turbine. Optimal performances with the objective of maximizing system exergy efficiency are compared with the common used working fluid R245fa and two environmental friendly working fluids R1234ze(E) and R1234ze(Z). Highest turbine isentropic efficiency is achieved for working fluid R1234ze(Z). The optimal turbine inlet vapor is overheating for Working fluid R1234ze(E) with the limitation of allowable minimum geothermal brine reinjection temperature. Due to the influence of turbine isentropic efficiency, optimal system exergy efficiency for working fluid R1234ze(E) is 0.4576 for the 100 kg/s geothermal source, which is slightly higher than the value of 0.4487 for the 10 kg/s geothermal source.</description><subject>Correlation analysis</subject><subject>Efficiency</subject><subject>Engineering</subject><subject>Exergy</subject><subject>Fluids</subject><subject>Low temperature</subject><subject>Mechanical Engineering</subject><subject>Optimization</subject><subject>Overheating</subject><subject>Performance evaluation</subject><subject>Reinjection</subject><subject>Saline water</subject><subject>Technical Paper</subject><subject>Turbines</subject><subject>Working fluids</subject><issn>1678-5878</issn><issn>1806-3691</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhhdRsFZ_gLeA5-ik2c0mRyl-QUERPYc0O1tTt8mabNF69Y-bWg9ePM3APO878BTFKYNzBlBfpBJKDhSYpKCUoGqvGDEJgnKh2H7eRS1pJWt5WByltATgk0pUo-LrAWMb4sp4iyT0g1u5TzO44EloSRfe6YCrHqMZ1hHJAsPwghnuSIgL450lj8a_Oo_EbmyHiayT8wtiPlxGcmS-PbmEfoihzzS2rbMOvd0QG2LE7ufVcXHQmi7hye8cF8_XV0_TWzq7v7mbXs6o5ZUa6BwaVte8URyElMjKthJYc5g3DUDDS8aN4ILLpm1K5AznE8ttjRIUEyVDwcfF2a63j-FtjWnQy7COPr_UTMlsjYlJlSm2o2wMKUVsdR_dysSNZqC3rvXOtc6u9da1Vjkz2WVSZv0C45_mf0PfvDqE7g</recordid><startdate>20180201</startdate><enddate>20180201</enddate><creator>Zhang, Chao</creator><creator>Fu, Jinglun</creator><creator>Kang, Jun</creator><creator>Fu, Wencheng</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-7455-6640</orcidid></search><sort><creationdate>20180201</creationdate><title>Performance optimization of low-temperature geothermal organic Rankine cycles using axial turbine isentropic efficiency correlation</title><author>Zhang, Chao ; Fu, Jinglun ; Kang, Jun ; Fu, Wencheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c359t-b0d1773d930688e14f56e730bdd00d3413a63638dfd4e31eb2c3c7e8091641e63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Correlation analysis</topic><topic>Efficiency</topic><topic>Engineering</topic><topic>Exergy</topic><topic>Fluids</topic><topic>Low temperature</topic><topic>Mechanical Engineering</topic><topic>Optimization</topic><topic>Overheating</topic><topic>Performance evaluation</topic><topic>Reinjection</topic><topic>Saline water</topic><topic>Technical Paper</topic><topic>Turbines</topic><topic>Working fluids</topic><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Fu, Jinglun</creatorcontrib><creatorcontrib>Kang, Jun</creatorcontrib><creatorcontrib>Fu, Wencheng</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of the Brazilian Society of Mechanical Sciences and Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Chao</au><au>Fu, Jinglun</au><au>Kang, Jun</au><au>Fu, Wencheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance optimization of low-temperature geothermal organic Rankine cycles using axial turbine isentropic efficiency correlation</atitle><jtitle>Journal of the Brazilian Society of Mechanical Sciences and Engineering</jtitle><stitle>J Braz. Soc. Mech. Sci. Eng</stitle><date>2018-02-01</date><risdate>2018</risdate><volume>40</volume><issue>2</issue><spage>1</spage><epage>11</epage><pages>1-11</pages><artnum>61</artnum><issn>1678-5878</issn><eissn>1806-3691</eissn><abstract>Present study deals with parametric optimization and performance evaluation of an air-cooled organic Rankine system for the low-temperature geothermal source, especially considering the effects of turbine isentropic efficiency. Turbine isentropic efficiency is predicted with turbine size parameter and volume ratio, using the well-known correlation for single-stage axial turbine. Optimal performances with the objective of maximizing system exergy efficiency are compared with the common used working fluid R245fa and two environmental friendly working fluids R1234ze(E) and R1234ze(Z). Highest turbine isentropic efficiency is achieved for working fluid R1234ze(Z). 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| language | eng |
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| source | Springer Online Journals Complete |
| subjects | Correlation analysis Efficiency Engineering Exergy Fluids Low temperature Mechanical Engineering Optimization Overheating Performance evaluation Reinjection Saline water Technical Paper Turbines Working fluids |
| title | Performance optimization of low-temperature geothermal organic Rankine cycles using axial turbine isentropic efficiency correlation |
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