Lecture 14 HEF Su 2011 %281%29

Lecture 14 HEF Su 2011 %281%29 - ME 200: Thermodynamics I...

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Unformatted text preview: ME 200: Thermodynamics I Lecture 14: Ideal Gas Properties and Polytropic Processes H. Finney Summer 2011 2 In this Lecture We will study: Ideal Gas properties Polytropic processes 3 Ideal Gas Properties u and h only depend on temperature (for ideal gas). dT T c du dT T c T u T u T T 2 1 1 2 T u u RT P RT T u T h h dT T c T h T h T T p 2 1 1 2 dT T c dh p 3 4 Ideal Gas Properties c p and c can be assumed constant for any gas, over a small enough temperature interval. In other cases, we use an average value T c h ave p , 2 1 2 , T c T c c i i ave i T c u ave , 1 2 T T c u 1 2 T T c h p 4 Ideal Gas Properties 5 c c k p Know T , can determine c p , c v , and k for different gases Ideal Gas Properties 6 Empirical specific heat relations 7 Ideal Gas Properties In some cases, we must account for the variation of c i with T....
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This note was uploaded on 09/26/2011 for the course ME 200 taught by Professor Gal during the Summer '08 term at Purdue University-West Lafayette.

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Lecture 14 HEF Su 2011 %281%29 - ME 200: Thermodynamics I...

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