ME200 - Lecture 320

ME200 - Lecture 320 - ME200 ThermodynamicsI Lecture32...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
11/13/2010 1 Isentropic Efficiencies ME 200 Thermodynamics I Purdue University , Dr. Tim Pourpoint – [email protected] Lecture 32 November 12 th , 2010 Last Lectures: – Isentropic Processes for ideal gases with constant and variable specific heats •Fo r constant specific heats Outline r variable specific heats, we use relative pressure (p r ) and relative specific volume (v r ) directly from ideal gas tables for air Today: – Isentropic efficiencies: “The Pursuit of the Ideal Thermodynamic Process” ME 200 2 –M o r e examples with 2 nd law Next week: –E x am #3 on Wednesday (17 th ) from 8 to 9pm in WTHR 200 –C o v e r s lectures 1 to 32, emphasis on 2 nd law Solve SP32 BEFORE the exam , there will be an isentropic efficiency problem
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
11/13/2010 2 •Idea l process for most steady flow devices such as turbines/compressors and nozzles/diffusers is reversible, adiabatic Isentropic Efficiency i.e.: isentropic • Irreversibilities always present in real processes leading to less than optimum performance
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/11/2011 for the course ME 200 taught by Professor Gal during the Fall '08 term at Purdue.

Page1 / 8

ME200 - Lecture 320 - ME200 ThermodynamicsI Lecture32...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online