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ME 476: 2 nd Law Analysis of Engineering Systems Spring 2008 Derek Baker

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis This Week’s Schedule Today: Overview of Class oGrading oAssignments oStructure Thursday: oClass Policies oBegin Review of Non-Reacting Energy Processes (Thermo I) 25 Şubat (Monday), 17.00: Ethics HW 1 Due 3 Şubat (Monday), 17.00: Ethics HW 2 Due

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis 2 nd Law Analysis Advanced Thermodynamic Analysis Also Called oAvailability Analysis oExergy Analysis Active area of thermodynamics Exergy quantifies part of energy available to do useful work (i.e., quality of energy)

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Exergy: Pollution, Climate Change, Resources

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis 2 nd Law Analysis Exergy not conserved. A thermodynamically perfect process oIs completely reversible Generates no entropy Destroys/loses no exergy oGenerates no pollution/global warming gases All real processes destroy exergy, which results in oConsumption of non-renewable resources oPollution oGlobal warming Goals: oQuantify exergy destroyed/lost by real processes oIdentify processes that destroy/lose the most exergy oMinimize exergy destruction through improved engineering Thermal design and optimization

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Topics: 1.Non-Reacting Energy and Exergy Processes a)Energy: Review Thermo I b)Exergy: Review Thermo II c)Non-Reacting Mixtures: Review Thermo II and extend to Exergy 2.Reacting Mixtures: a)Review Thermo II b)Extend to Exergy 3.Exergy, Heat Transfer and Fluid Flow (Thermal Systems) 4.Economics 5.Thermoeconomics 6.Optimization

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Grading 20% Homework o½ directly related to project o½ covers other topics 25% MT1 25% MT2 30% Final

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Grading 20% Homework o½ directly related to project o½ covers other topics 25% MT1 25% MT2 30% Final For MTs and Final o½ Take-home related to project o½ In-class ~ 50+% of grade is based on project!

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Quizzes and Attendance No Quizzes Attendance taken but not used to calculate final grade Grading Curve: oDefined by students with good attendance oNot effected by students with poor attendance Students with good attendance given benefit of doubt You are responsible for all material I cover in class. If you miss class without an excuse, do not create extra work for me by asking me what you missed

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Project Develop model of simple gas turbine engine with heat recovery steam generator Modeling: MathCad oNot Excel or MatLab oWill teach MathCad in Class Reports: o~ 7 total (4 HW, 2 for MT’s and 1 for Final) 1 every 2 weeks o~ 2 pages each + methodology oTable summarizing results oGraph of results o~ 1 page of interpretation oMethodology

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Parts to Project 1.Non-reacting Energy Model 2.Non-reacting exergy model 3.Add water injection before combustion (psychrometrics): Energy and Exergy 4.Combustion + Global Warming 5.Pollution: NO x generation 6.Heat recovery steam generator 7.Economics

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Parts to Project 1.Non-reacting Energy Model 2.Non-reacting exergy model 3.Add water injection before combustion (psychrometrics): Energy and Exergy 4.Combustion + Global Warming 5.Pollution: NO x generation 6.Heat recovery steam generator 7.Economics ** To do well in this course you must work on project over whole semester!**

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Prior Knowledge Assume you know oWord, Excel (for graphing and tables) oCan answer individual questions Assume you know but will review main ideas in class oME 203, Thermo oME 204, Thermo II oThese classes are Prereqs! Assume you do not know and will cover in class: oMathCad oEconomics oHeat Transfer oFluid Mechanics

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis Selection Criteria If class fills-up…. Attendance on Thursday Cumulative GPA Complete Ethics HW1 by Monday

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Orta Doğu Teknik ÜniversitesiME 476 2 nd Law Analysis 2 nd Law Analysis of Engineering Systems Questions?????

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