Lec06 - ME 200: Thermodynamics I Lecture 6: Total Energy,...

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Unformatted text preview: ME 200: Thermodynamics I Lecture 6: Total Energy, Internal Energy and Heat Transfer 2.3, 2.4 SP6; 2.30, 2.41 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) 8/26/2009 1 In Lecture 5 Expansion/compression work, d W=pdV; we have been showing distinction between derivative of property (e.g., dV/dt) and work d W/ d t Skipped over other examples of work (Sections 2.2.6 and 2.2.7) and Equation (2.26) In previous lectures D KE+ D PE= D E; and in ideal mechanical world (no air drag, no rolling resistance, no friction, etc.), D E=0 8/26/2009 2 This Lecture Joules Experiment (p. 53) on thermally isolated systems (adiabatic process) System Energy Interactions Total Energy Internal Energy Heat Transfer 8/26/2009 3 8/26/2009 4 Google search: Joules Experiment - should get 849,000 hits http://library.thinkquest.org/23718/joule.htmlhttp://library....
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Lec06 - ME 200: Thermodynamics I Lecture 6: Total Energy,...

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