me 476: 2 nd law analysis of engineering systems spring 2008 derek baker
TRANSCRIPT
ME 476: ME 476: 22ndnd Law Analysis of Law Analysis of
Engineering SystemsEngineering Systems
Spring 2008
Derek Baker
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
This Week’s Schedule
Today: Overview of Classo Gradingo Assignmentso Structure
Thursday:o Class Policieso Begin 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
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
2nd Law Analysis Advanced Thermodynamic Analysis Also Calledo Availability Analysiso Exergy Analysis
Active area of thermodynamics Exergy quantifies part of energy available to do useful
work (i.e., quality of energy)
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Exergy: Pollution, Climate Change, Resources
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
2nd Law Analysis Exergy not conserved. A thermodynamically perfect process
o Is completely reversible • Generates no entropy• Destroys/loses no exergy
o Generates no pollution/global warming gases All real processes destroy exergy, which results in
o Consumption of non-renewable resourceso Pollutiono Global warming
Goals:o Quantify exergy destroyed/lost by real processeso Identify processes that destroy/lose the most exergyo Minimize exergy destruction through improved engineering
Thermal design and optimization
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Topics:
1. Non-Reacting Energy and Exergy Processesa) Energy: Review Thermo Ib) Exergy: Review Thermo IIc) Non-Reacting Mixtures: Review Thermo II and extend
to Exergy
2. Reacting Mixtures: a) Review Thermo IIb) Extend to Exergy
3. Exergy, Heat Transfer and Fluid Flow (Thermal Systems)
4. Economics5. Thermoeconomics6. Optimization
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Grading
20% Homeworko ½ directly related to projecto ½ covers other topics
25% MT1 25% MT2 30% Final
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Grading
20% Homeworko ½ directly related to projecto ½ covers other topics
25% MT1 25% MT2 30% Final
For MTs and Finalo ½ Take-home related to projecto ½ In-class
~ 50+% of grade is based on project!
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Quizzes and Attendance
No Quizzes Attendance taken but not used to calculate final
grade Grading Curve:
o Defined by students with good attendanceo Not 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
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Project
Develop model of simple gas turbine engine with heat recovery steam generator
Modeling: MathCado Not Excel or MatLabo Will teach MathCad in Class
Reports:o ~ 7 total (4 HW, 2 for MT’s and 1 for Final) 1 every 2
weekso ~ 2 pages each + methodologyo Table summarizing resultso Graph of resultso ~ 1 page of interpretationo Methodology
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
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: NOx generation
6. Heat recovery steam generator
7. Economics
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
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: NOx generation
6. Heat recovery steam generator
7. Economics
** To do well in this course you must work on project over whole semester!**
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Prior Knowledge Assume you knowo Word, Excel (for graphing and tables)o Can answer individual questions
Assume you know but will review main ideas in classo ME 203, Thermo o ME 204, Thermo IIo These classes are Prereqs!
Assume you do not know and will cover in class:o MathCado Economicso Heat Transfero Fluid Mechanics
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
Selection Criteria
If class fills-up…. Attendance on Thursday Cumulative GPA Complete Ethics HW1 by Monday
ME 476 2nd Law Analysis Orta Doğu Teknik Üniversitesi
2nd Law Analysis of Engineering Systems
Questions?????