Lecture_4 - ME 2322 Engineering Thermodynamics I Lecture...

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ME 2322 Engineering Thermodynamics I Lecture 04, 1/25/11 Prof. Zhaoming He
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Chapter 2 Introduce the concept of energy and define its various forms. Define the concept of heat and the terminology associated with energy transfer by heat. Define the concept of work, including electrical work and several forms of mechanical work. Define several forms of mechanical work. Introduce the energy balances, and mechanisms of energy transfer to or from a system. Determine that a fluid flowing across a control surface of a control volume carries energy across the control surface. Define energy conversion efficiencies.
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Electric Work When N coulombs of electrical charge move through a potential V, work is done: Rate of work Total work – If V,I are constant VN W e = VI W e = ) ( 1 2 2 1 1 t t VI VIdt W t e = =
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First Law of Thermodynamics Conservation of energy – Energy can be neither created nor destroyed during a process; it can only change forms
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This note was uploaded on 03/07/2011 for the course ME 2322 taught by Professor Oler during the Spring '06 term at Texas Tech.

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Lecture_4 - ME 2322 Engineering Thermodynamics I Lecture...

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