Le32 - ME 200: Thermodynamics I Lecture 32: Isentropic...

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ME 200: Thermodynamics I Lecture 32 : Isentropic efficiencies Reading: Section 6.12 ; SP32, 6.132, 6.139 11/12/2010 1 ME200 Therm I Lectures 32, Prof. Mongia Professor Hukam Mongia Office Hours: MWF 9:30 to 10:30 AM in ME 83 Other times email for appointment; Phone: 765-494-5640 Course Website: https://engineering.purdue.edu/ME200/ Course Secretaries: Diana Akers (ME 84) and Marilyn Morrison (ME 100) Grader: Abhro Pal , abhro.pal@gmail.com
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11/12/2010 ME200 Therm I Lectures 32, Prof. Mongia 2 Isentropic Turbine Efficiency: 12 21 2 1 1 2 ,, : 0 exp ( ) () . / ( ) cv cv cv ss cv s v T c s Steady state thermallyisolated negligible KE and PE changes W hh m m Isentropic ansion noirreversibility s s W m WW Isentropic ef f mm 
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3 Isentropic Nozzle Efficiency: 22 1 1 2 2 2 1 2 1 21 2 1 2 1 ,, , 0 : 11 0 exp ( ) () . / ( ) cv cv ss s N Steady state thermallyisolated W negligible PE change m h V h V V h h V m Isentropic ansion noirreversibility s s V h h V Isentropic e h ff V V  2 1 2 1 2 1 2 1 1 2 1 2 s hV h h V 
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11/12/2010 ME200 Therm I Lectures 32, Prof. Mongia 4 Isentropic Efficiency Compressors and Pumps 21 2 1 1 2 ,, : 0 () . ( ) / ( ) cv cv cv ss cv cv s s C Steady state thermallyisolated negligible KE and PE changes W hh m m Isentropic compression noirreversibility s s W m WW Isentropic eff mm 
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Le32 - ME 200: Thermodynamics I Lecture 32: Isentropic...

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