When air of ~ 300 K is expanded adiabaticaly but non-isentropic, e.g. by passing through a throttle valve, how do I calculate the change in temperature? P1 is approximately 4 bar absolut, P2 between 1 and 3 bar absolut.
Basically, I am looking for a table or diagram with Joule-Thomson-coefficients for air, preferably in a citable source.
Dear Nils,
The following link contains tables and figures for Joule-Thomson-Coefficient which may be helpful:
https://encrypted.google.com/search?q=table+or+diagram+with+Joule-Thomson-coefficients+for+air&newwindow=1&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjPxeHmjvnOAhUCWhQKHRnHALYQsAQIJA&biw=1366&bih=667
Hoping this will be helpful,
Rafik
For a particularly comprehensive presentation of this query subject ― Joule-Thomson coefficient and its application ― you may possibly refer to: V.A. Kirillin, V.V. Sychev, A.E. Sheindlin, "Engineering Thermodynamics", Mir Publishers, Moscow, 1987 (3rd printing), transl. from Russian by: S. Semyonov.
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