3.32 - 3 3.32 a) Define the system to be the nitrogen gas....

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3.32 a) Define the system to be the nitrogen gas. Since a Joule-Thomson expansion is isenthalpic, . Using the pressure enthalpy diagram for nitrogen, Figure 3.3-3, we have ± , ± , HT P 11 2 2 afa = f H ± . ± HT T P 135 20 MPa 153 04 153 22 K, kJ / kg and then MPa, kJ / kg () == = = ch From which we find that T = 90 K, with approximately 55% of the nitrogen as vapor, and 45% as
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This note was uploaded on 01/06/2011 for the course CHE 330 at USC.

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