Lecture05_Expansion_compression_work-2_handout-2

# Lecture05_Expansion_compression_work-2_handout-2 - ME200...

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1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME1091 Email : [email protected] Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 5 : Expansion/compress work, other work

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2 Outline Expansion Other types of work
3 Work - Energy transfer, (for mechanical energy to kinetic or potential), which is related with force [F] acting though a distance [m] - Pathway & Process dependent - Not a property F=pA 1 2 P V 2 =F ds = pA dx =p dV ° = ° =

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4 Quasi-equilibrium -Equilibrium (static)- -Quasi-equilibrium – idealized process of real process (quasi-static) - it is only required that the properties of the system be uniform at any instant during a process (In short, it models change as a series of eq. process) -Example on Textbook Initially at Equilibrium Equilibrium equilibrium process
5 Expansion Amount of work - ? = ± °2 °1 Volume increase (V2>V1) via P Work done the system to dV F=PA V2 V1 System is the gas inside the chamber (frictionless chamber) Amount of work - ? = ± °2

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Lecture05_Expansion_compression_work-2_handout-2 - ME200...

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