Lec19 - ME 200: Thermodynamics I Lecture 19: Turbines,...

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ME 200: Thermodynamics I Lecture 19: Turbines, compressors, pumps Sections 4.7, 4.8 Problems: SP19, 4.48, 4.53, 4.67 Professor Hukam Mongia Office Hours: MWF 2:30 to 3:30 pm in ME 83 (Other times email for appointment) Email: hmongia@purdue.edu Phone: 765-494-5640 Course Website: https://engineering.purdue.edu/ME200 Course Secretaries: Diana Akers (ME 84) and Marilyn Morrison (ME 100) See Kul Inn (ME 189) about grading Homework Assignments 10/3/2009 Problem answers: 4.48: (a) 0.021 m2, (b) -313.7 kW; 4.53: -26.6 kW; 4.67: 15.98 kg/s 1
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Last Lecture Application of First Law of Thermodynamics Nozzles velocity increases; pressure drops Diffusers pressure increases; velocity drops Heat transfer and PE usually negligible for nozzles and diffusers When the fluid in a nozzle of diffuser is a liquid, PE may be important
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This Lecture Applications of First Law of Thermodynamics Turbines Compressors and Pumps 10/3/2009 3
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A reaction steam turbine described by by Hero of Alexandria in Roman Egypt in 1 st century. 1 st impact steam turbine invented by Taqi al- Din in Ottoman Egypt in 1551. Similar devices invented by Italian Giovanni Branca in 1629, John Wilkins in 1648 and Samuel Pepys in 1660. Modern steam turbine was invented in 1884
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Lec19 - ME 200: Thermodynamics I Lecture 19: Turbines,...

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