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Lecture 10 PES Su 2011 annotated

Lecture 10 PES Su 2011 annotated - ME 200 Thermodynamics I...

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ME 200: Thermodynamics I Lecture 10: Property Tables Prof. Sojka Summer 2011
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2 In this Lecture … Property Tables
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3 Thermodynamic Properties Can be retrieved from: tables graphs equations computer software Tables provide an easy way of listing relevant properties for many pure, simple compressible substances. Property information is available for compressed liquid saturated liquid liquid-vapor mixture saturated vapor superheated vapor
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4 Evaluating Properties How many intensive properties the state postulate tells us we must specify to dictate the state of a compressed liquid (i.e., to calculate the rest of the properties)? Two!
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ME 200 5 Evaluating Properties Compressed liquid What are the specific volume and internal energy values for water at P = 25 bar and T = 100 ºC? υ = 1.0423 x 10 -3 m 3 /kg u = 418.24 KJ/kg September 15 th , 2010 Table A-5 Properties of Compressed Liquid Water (p. 825)
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6 Evaluating Properties Compressed Liquid What is the specific volume for water at P = 5.0 MPa and T = 200 ºC? υ = 1.1530 x 10 -3 m 3 /kg ME 200 Table A-5 Properties of Compressed Liquid Water (p. 825)
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ME 200 7 Evaluating Properties Compressed Liquid What is the temperature in ºF for water at 500 psi and u = 268.92 Btu/lb? T = 300 ºF Table A-5E Properties of Compressed Liquid Water (p. 875)
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ME 200 8 Evaluating Properties How many intensive properties the state postulate tells us we must specify to dictate the state of a superheated vapor (i.e., to calculate the rest of the properties)?
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