Constructal design and optimization of a dual pressure heat recovery steam generator
Optimum design of the Heat Recovery Steam Generator (HRSG) has noticeable effects on the thermal efficiency of the combined cycle power plants. In this paper, constructal design of a dual pressure HRSG is proposed. It is shown how to simultaneously optimize the operating and geometric design paramet...
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Veröffentlicht in: | Energy (Oxford) 2017-04, Vol.124, p.87-99 |
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description | Optimum design of the Heat Recovery Steam Generator (HRSG) has noticeable effects on the thermal efficiency of the combined cycle power plants. In this paper, constructal design of a dual pressure HRSG is proposed. It is shown how to simultaneously optimize the operating and geometric design parameters of the HRSG by using the constructal theory. Considering the minimum total entropy generation as objective function, optimum parameters of the HRSG unit are derived by using the genetic algorithm method under the fixed total volume condition. The optimized total volume, aspect ratios of the units, the number of tubes through the length and width, the heat transfer area of the HRSG and thermodynamic properties are significant features of the flow configuration resulted from constructal design. Optimal aspect ratios of the units are correlated to the pressure and temperature and effects of these variables on the main geometric characteristics of HRSG are obtained. The results show that there is an optimum value for total volume of the HRSG and most of the overall heat transfer coefficient (UA) are allocated to the evaporators. Also, number of the tubes in the longitudinal direction are fewer than the number of tubes in the transverse direction.
•Constructal design of a dual pressure heat recovery steam generator is introduced.•The main focus of design is on the physical configuration of the HRSG.•The Genetic Algorithm is used to optimize the exergy destruction of unit.•Optimal aspect ratios of the units are correlated to pressure and temperature.•Optimum value for the total volume of HRSG is derived. |
doi_str_mv | 10.1016/j.energy.2017.02.046 |
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•Constructal design of a dual pressure heat recovery steam generator is introduced.•The main focus of design is on the physical configuration of the HRSG.•The Genetic Algorithm is used to optimize the exergy destruction of unit.•Optimal aspect ratios of the units are correlated to pressure and temperature.•Optimum value for the total volume of HRSG is derived.</description><identifier>ISSN: 0360-5442</identifier><identifier>EISSN: 1873-6785</identifier><identifier>DOI: 10.1016/j.energy.2017.02.046</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Combined cycle power generation ; Constructal theory ; Design ; Design optimization ; Design parameters ; Electric power plants ; Entropy ; Entropy generation ; Evaporation ; Evaporators ; Genetic algorithm method ; Genetic algorithms ; Heat recovery ; Heat recovery steam generator ; Heat recovery systems ; Heat transfer ; Heat transfer coefficients ; Objective function ; Optimization ; Power efficiency ; Power plants ; Pressure ; Steam electric power generation ; Temperature effects ; Thermodynamic efficiency ; Thermodynamic properties ; Thermodynamics ; Tubes</subject><ispartof>Energy (Oxford), 2017-04, Vol.124, p.87-99</ispartof><rights>2017 Elsevier Ltd</rights><rights>Copyright Elsevier BV Apr 1, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c334t-d730a21cdeb82a83fccecfe614733a1459217dc390d57a143cab01a3dc2b6bc23</citedby><cites>FETCH-LOGICAL-c334t-d730a21cdeb82a83fccecfe614733a1459217dc390d57a143cab01a3dc2b6bc23</cites><orcidid>0000-0003-2073-6106</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.energy.2017.02.046$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Mehrgoo, Morteza</creatorcontrib><creatorcontrib>Amidpour, Majid</creatorcontrib><title>Constructal design and optimization of a dual pressure heat recovery steam generator</title><title>Energy (Oxford)</title><description>Optimum design of the Heat Recovery Steam Generator (HRSG) has noticeable effects on the thermal efficiency of the combined cycle power plants. In this paper, constructal design of a dual pressure HRSG is proposed. It is shown how to simultaneously optimize the operating and geometric design parameters of the HRSG by using the constructal theory. Considering the minimum total entropy generation as objective function, optimum parameters of the HRSG unit are derived by using the genetic algorithm method under the fixed total volume condition. The optimized total volume, aspect ratios of the units, the number of tubes through the length and width, the heat transfer area of the HRSG and thermodynamic properties are significant features of the flow configuration resulted from constructal design. Optimal aspect ratios of the units are correlated to the pressure and temperature and effects of these variables on the main geometric characteristics of HRSG are obtained. The results show that there is an optimum value for total volume of the HRSG and most of the overall heat transfer coefficient (UA) are allocated to the evaporators. Also, number of the tubes in the longitudinal direction are fewer than the number of tubes in the transverse direction.
•Constructal design of a dual pressure heat recovery steam generator is introduced.•The main focus of design is on the physical configuration of the HRSG.•The Genetic Algorithm is used to optimize the exergy destruction of unit.•Optimal aspect ratios of the units are correlated to pressure and temperature.•Optimum value for the total volume of HRSG is derived.</description><subject>Combined cycle power generation</subject><subject>Constructal theory</subject><subject>Design</subject><subject>Design optimization</subject><subject>Design parameters</subject><subject>Electric power plants</subject><subject>Entropy</subject><subject>Entropy generation</subject><subject>Evaporation</subject><subject>Evaporators</subject><subject>Genetic algorithm method</subject><subject>Genetic algorithms</subject><subject>Heat recovery</subject><subject>Heat recovery steam generator</subject><subject>Heat recovery systems</subject><subject>Heat transfer</subject><subject>Heat transfer coefficients</subject><subject>Objective function</subject><subject>Optimization</subject><subject>Power efficiency</subject><subject>Power plants</subject><subject>Pressure</subject><subject>Steam electric power generation</subject><subject>Temperature effects</subject><subject>Thermodynamic efficiency</subject><subject>Thermodynamic properties</subject><subject>Thermodynamics</subject><subject>Tubes</subject><issn>0360-5442</issn><issn>1873-6785</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kM1LAzEQxYMoWKv_gYeA510nyX5eBCl-QcFLPYdsMluztJs1yQr1rzelnj0NA--9mfcj5JZBzoBV90OOI_rtIefA6hx4DkV1RhasqUVW1U15ThYgKsjKouCX5CqEAQDKpm0XZLNyY4h-1lHtqMFgtyNVo6FuinZvf1S0bqSup4qaOSkmjyHMHuknqkg9aveN_kBDRLWn2-MXKjp_TS56tQt48zeX5OP5abN6zdbvL2-rx3WmhShiZmoBijNtsGu4akSvNeoeK1bUQihWlC1ntdGiBVPWaRdadcCUMJp3Vae5WJK7U-7k3deMIcrBzX5MJyVrBWdNyUpIquKk0t6F4LGXk7d75Q-SgTzyk4M88ZNHfhK4TPyS7eFkw9Tg26KXQVscNRqbekdpnP0_4BejYnyA</recordid><startdate>20170401</startdate><enddate>20170401</enddate><creator>Mehrgoo, Morteza</creator><creator>Amidpour, Majid</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0003-2073-6106</orcidid></search><sort><creationdate>20170401</creationdate><title>Constructal design and optimization of a dual pressure heat recovery steam generator</title><author>Mehrgoo, Morteza ; Amidpour, Majid</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-d730a21cdeb82a83fccecfe614733a1459217dc390d57a143cab01a3dc2b6bc23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Combined cycle power generation</topic><topic>Constructal theory</topic><topic>Design</topic><topic>Design optimization</topic><topic>Design parameters</topic><topic>Electric power plants</topic><topic>Entropy</topic><topic>Entropy generation</topic><topic>Evaporation</topic><topic>Evaporators</topic><topic>Genetic algorithm method</topic><topic>Genetic algorithms</topic><topic>Heat recovery</topic><topic>Heat recovery steam generator</topic><topic>Heat recovery systems</topic><topic>Heat transfer</topic><topic>Heat transfer coefficients</topic><topic>Objective function</topic><topic>Optimization</topic><topic>Power efficiency</topic><topic>Power plants</topic><topic>Pressure</topic><topic>Steam electric power generation</topic><topic>Temperature effects</topic><topic>Thermodynamic efficiency</topic><topic>Thermodynamic properties</topic><topic>Thermodynamics</topic><topic>Tubes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mehrgoo, Morteza</creatorcontrib><creatorcontrib>Amidpour, Majid</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Energy (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mehrgoo, Morteza</au><au>Amidpour, Majid</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Constructal design and optimization of a dual pressure heat recovery steam generator</atitle><jtitle>Energy (Oxford)</jtitle><date>2017-04-01</date><risdate>2017</risdate><volume>124</volume><spage>87</spage><epage>99</epage><pages>87-99</pages><issn>0360-5442</issn><eissn>1873-6785</eissn><abstract>Optimum design of the Heat Recovery Steam Generator (HRSG) has noticeable effects on the thermal efficiency of the combined cycle power plants. In this paper, constructal design of a dual pressure HRSG is proposed. It is shown how to simultaneously optimize the operating and geometric design parameters of the HRSG by using the constructal theory. Considering the minimum total entropy generation as objective function, optimum parameters of the HRSG unit are derived by using the genetic algorithm method under the fixed total volume condition. The optimized total volume, aspect ratios of the units, the number of tubes through the length and width, the heat transfer area of the HRSG and thermodynamic properties are significant features of the flow configuration resulted from constructal design. Optimal aspect ratios of the units are correlated to the pressure and temperature and effects of these variables on the main geometric characteristics of HRSG are obtained. The results show that there is an optimum value for total volume of the HRSG and most of the overall heat transfer coefficient (UA) are allocated to the evaporators. Also, number of the tubes in the longitudinal direction are fewer than the number of tubes in the transverse direction.
•Constructal design of a dual pressure heat recovery steam generator is introduced.•The main focus of design is on the physical configuration of the HRSG.•The Genetic Algorithm is used to optimize the exergy destruction of unit.•Optimal aspect ratios of the units are correlated to pressure and temperature.•Optimum value for the total volume of HRSG is derived.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.energy.2017.02.046</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0003-2073-6106</orcidid></addata></record> |
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subjects | Combined cycle power generation Constructal theory Design Design optimization Design parameters Electric power plants Entropy Entropy generation Evaporation Evaporators Genetic algorithm method Genetic algorithms Heat recovery Heat recovery steam generator Heat recovery systems Heat transfer Heat transfer coefficients Objective function Optimization Power efficiency Power plants Pressure Steam electric power generation Temperature effects Thermodynamic efficiency Thermodynamic properties Thermodynamics Tubes |
title | Constructal design and optimization of a dual pressure heat recovery steam generator |
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