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《畢業(yè)論文（設(shè)計(jì)）船舶余熱驅(qū)動(dòng)有機(jī)朗肯循環(huán)的工質(zhì)優(yōu)選》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、船舶余熱驅(qū)動(dòng)有機(jī)朗肯循環(huán)的工質(zhì)優(yōu)選摘要：分析了不同優(yōu)化目標(biāo)函數(shù)下的有機(jī)朗肖循環(huán)系統(tǒng)參數(shù)和性能，采用多評(píng)價(jià)指標(biāo)對(duì)工質(zhì)進(jìn)行優(yōu)選。研究結(jié)果表明，系統(tǒng)的熱效率隨著熬發(fā)溫度的升高先増大再減小，在一定膨脹比下，系統(tǒng)冇最佳熬發(fā)溫度；工質(zhì)的選擇會(huì)極大地影響評(píng)價(jià)系統(tǒng)成木的經(jīng)濟(jì)性目標(biāo)函數(shù)，不同工質(zhì)的最優(yōu)經(jīng)濟(jì)性目標(biāo)函數(shù)值最大相差3.5倍；以綜合評(píng)價(jià)函數(shù)F為優(yōu)化目標(biāo)分析系統(tǒng)參數(shù)和性能更加全而，得出的最佳冷凝溫度要小于以1/obj為優(yōu)化目標(biāo)的最佳冷凝溫度；以cyclohexane>R113和R141b為工質(zhì)時(shí)系統(tǒng)冇較優(yōu)的經(jīng)濟(jì)性能和綜合性能,多評(píng)價(jià)指標(biāo)綜合分析，R141b是最優(yōu)的工質(zhì)。關(guān)鍵詞：有機(jī)朗肯
2、循環(huán)；有機(jī)工質(zhì)；經(jīng)濟(jì)性能；效率；參數(shù)優(yōu)化WorkingFluidsOptimizationforOrganicRankineCycleSystemofWasteHeatRecoveryFromShipDieselEngineZhuYilin1,LiWciyi1,SunGuanzhong",TangQiang3,GaoJing1,XuWcnhua1,CaoChunhui1(l.KeyLaboratoryLow-grateEnergyUtilizationTechnologiesandSystems,MinistryofEducation(TianjinUniversity),
3、Tianjin300350;2.KeyLaboratoryofRegionalEnergySystemOptimization,MinistryofEducation(NorthChinaElectricPowerUniversity^Beijing102206;3.KeyLaboratoryofLow-gradeEnergyUtilizationTechnologiesandSystems,MinistryofEducation(ChongqingUniversity),Chongqing400030)Abstract:Thesystemparametersandperf
4、ormanceoforganicRankinccycle(ORC)wereanalyzedbyusingdifterentoptimizationobjectivefunctions.TheworkingfluidswereselectedforORCsystemwithmulti-objectiveevaluation.Theresultsshowthatthethermalefficiencyincreaseswiththeevaporationtemperaturerisingandthendecreases?Thereistheoptimalevaporationt
5、emperatureunderthecertainexpansionrationinthesystem.Thechoiceofworkingfluidswouldgreatlyaftecttheeconomicobjectivemeasuringthesysteminvestment.Thegapofthehighesteconomicobjectivevaluesofdifferentworkingfluidsisupto3.5times.Themorecomprehensiveanalysisofsystemperformanceandparameterswouldbe
6、acquiredwiththeFofcomprehensiveevaluationfiinctionastheoptimizationobjective.Itcancoordinatetherelationshipofdifferentcriteriaandbebetterforsystemeconomythanasinglescreencriterion.TheoptimumcondensationtemperaturebyusingtheFastheoptimizationobjectiveislessthanthatwiththe1/objofeconomicobje
7、ctivefunctionastheoptimizationobjective.ThesystemhasabettereconomicandcomprehensiveperformancewithcyclohexaneandR113andR141basworkingfluids.TheR141bistheoptimalworkingfluidfortheORCsystemofwasteheatrecoveryfromshipdieselenginewiththecomprehensiveanalysisofmult
