ME200 - Lecture 18 - 10/3/2010 1 Turbines, Compressors,...

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Unformatted text preview: 10/3/2010 1 Turbines, Compressors, Pumps Turbines, Compressors, Pumps ME 200 Thermodynamics I Purdue University , Dr. Tim Pourpoint timothee@purdue.edu Lecture 18 October 6 th , 2010 Application of First Law of Thermodynamics Nozzles velocity increases; pressure drops Diffuser Last Lecture Last Lecture Diffusers pressure increases; velocity drops Heat transfer and PE usually negligible for nozzles and diffusers When the fluid in a nozzle or diffuser is a liquid, PE may be important ME 200 ME 200 2 10/3/2010 2 Applications of First Law of Thermodynamics Turbines Compressors and Pumps This Lecture This Lecture ME 200 ME 200 3 A turbine is a steady flow engineering device used to produce net work output from the fluid, fluid drives rotating blades during the expansion process Turbine Turbine In a turbine, specific volume increases from inlet to exit as the working fluid expands Work interaction device desired output is mechanical work Heat transfer usually negligible due to insulation PE changes usually negligible; may need to consider KE ME 200 ME 200 4 PE changes usually negligible; may need to consider KE changes 10/3/2010 3 Turbine Turbine Steady Axial Flow...
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This note was uploaded on 12/11/2011 for the course ME 200 taught by Professor Gal during the Fall '08 term at Purdue University-West Lafayette.

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ME200 - Lecture 18 - 10/3/2010 1 Turbines, Compressors,...

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