Lect14ME200Divs2&5CompFactIdealGasSP2012

Lect14ME200Divs2&5CompFactIdealGasSP2012 - ME 200...

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ME 200 Division 2 Lecture 14: Ideal Gas Equation of State and the Compressibility Factor
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Last Lecture Specific Heats Incompressible Substances Compressed Liquid Property Determination from the Properties of the Saturated Liquid
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This Lecture Equation of State Ideal Gas Compressibility Factor
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Equation of State What is an Equation of State (EOS)? » A relationship between pressure, temperature and specific volume (or density) of a given pure substance (may involve other properties). Usually in form p = f ( T,v ). » Usually valid only under a limited range of conditions of pressure and temperature. Why do we need equations of state? » Property tables provide very accurate information; but need to be measured with some reference state. Most are calculated from sophisticated equations of state. » Use of simple relations such as ideal gas EOS and van der Waals EOS desirable for qualitative physical understanding of fluid behavior. » Incorporation in numerical codes for calculation of thermodynamic properties, system performance.
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Ideal Gas Ideal gas is an imaginary substance that has certain characteristics: » No molecular volume: molecules are simply points is space.
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This note was uploaded on 01/26/2012 for the course ME 200 taught by Professor Gal during the Spring '08 term at Purdue.

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Lect14ME200Divs2&5CompFactIdealGasSP2012 - ME 200...

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