Lec26 - ME 200: Thermodynamics I Lecture 26: Entropy as a...

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ME 200: Thermodynamics I Lecture 26: Entropy as a property Sections 6.1-6.2 Problems: SP26; 6.3, 6.4 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 1
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Recall: Property (p. 6): Macroscopic characteristics; does not depend on history (not path dependent)- T, P, u, h, v or r W= = Work is not a property (p. 37),because it depends on history- path dependent: Heat is not a property (p. 48), because it too depends on history- path dependent: Definition of Entropy 2
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st Law of Thermodynamics (p. 53): dE = d Q d W Joule’s experiment (p. 53) for an adiabatic system: dE = -dW adiabatic The 2 nd Law of Thermodynamics: Kelvin-Planck statement W cycle 0
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Lec26 - ME 200: Thermodynamics I Lecture 26: Entropy as a...

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