Lecture30_Application of rate balance-handout

Lecture30_Application of rate balance-handout - 1...

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Unformatted text preview: 1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME1091 Email : ebae@purdue.edu Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 30 : Application of rate balance to Open system 2 Outline Entropy Rate balance for control volume Examples ? ?? ? = + ? + 2 + ? ? ? + 2 + 3 Entropy balance for control volume - Nowforsteadystate- ? ? = + + = Mass rate balance Energy balance Steady state Entropy balance Mass and Energy => conserved Entropy => NOT conserved; entropy production term 4 Entropy change of ideal gas - Now One-inlet One exit Control volume at steady state - Per unit mass Since entropy production is positive, to get an Entropy decrease...
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Lecture30_Application of rate balance-handout - 1...

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