Difference between revisions of "Ideal Gas"

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(Equation Of State)
(Nomenclature)
Line 17: Line 17:
 
:<math> m </math> = mass, lb<sub>m</sub>
 
:<math> m </math> = mass, lb<sub>m</sub>
 
:<math> M </math> = molecular weight, lb<sub>m</sub>/lb<sub>mol</sub>
 
:<math> M </math> = molecular weight, lb<sub>m</sub>/lb<sub>mol</sub>
 +
:<math> n </math> = number of moles
 
:<math> P </math> = Pressure, psia
 
:<math> P </math> = Pressure, psia
 
:<math> R </math> = universal gas constant, 10.7316 psia ft<sup>3</sup>/ lb<sub>mol</sub>/ °R
 
:<math> R </math> = universal gas constant, 10.7316 psia ft<sup>3</sup>/ lb<sub>mol</sub>/ °R
 
:<math> T </math> = temperature, °R
 
:<math> T </math> = temperature, °R
 
:<math> V </math> = volume, ft<sup>3</sup>
 
:<math> V </math> = volume, ft<sup>3</sup>

Revision as of 11:22, 20 November 2017

Brief

Ideal Gas is a concept where:

  • gas is composed with molecules of negligible volume;
  • interaction between the molecules is negligible.

Equation Of State

It all started with Boyle-Charles Law published in 1662 .

The Ideal Gas EOS:

 PV = n RT =  \frac{m}{M} RT

Nomenclature

 m = mass, lbm
 M = molecular weight, lbm/lbmol
 n = number of moles
 P = Pressure, psia
 R = universal gas constant, 10.7316 psia ft3/ lbmol/ °R
 T = temperature, °R
 V = volume, ft3