Lecture10_Property_tables-handout2[1]

# Lecture10_Property_tables-handout2[1] - 1 Professor Euiwon...

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Unformatted text preview: 1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME15 Email : [email protected] Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 10 : Property tables 2 Announcement Bring textbook for the Wed/Fri lecture Will practice on evaluating the properties 1 st Exam on Sep 20 th 8-9 PM at CL50 Room 224 Lecture 1-11 (Monday slide Lect12+ Review) SP8-10 Due Friday 3:30 PM Will return graded SP on Monday Plotting process PV=C (try to plot y=1/x on Matlab etc) P v 3 Outline Property tables Evaluating P, v, T Examples 4 Evaluating properties - Assumption : thermodynamic properties of simple compressible systems with pure substance - Pressure-Volume-Temperature relations (for water) Triple line Liquid-vapor Solid and vapor Solid and liquid 5 Phase & pure substance - Pure substance: uniform and invariable in chemical composition - Example : water in two phase ( same H 2 O) - Example : air (78% nitrogen, 20% oxygen, 1% argon) stable and doesn’t chemically react Determining the state - Not all intensive properties are independent - States can be uniquely determine by certain # of independent variables State principle - For systems with pure substance ( simple compressible systems ) and equilibrium state -> Two independent intensive variable need to completely describe the properties Example : if we know T, v Rest of p=p(T,v), U=U(T,v) 6 Phase diagram T V Critical point...
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Lecture10_Property_tables-handout2[1] - 1 Professor Euiwon...

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