Talk:Joule-Thomson effect/Draft

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Wikipedia has a similar article

I extensively contributed to the Wikipedia article of the same name. I would estimate that about 75 percent of the wording in that article was mine.

I reworked it somewhat in my CZ sandbox and conformed it to a CZ article format. - Milton Beychok 19:49, 17 February 2008 (CST)

comments

1) the equation for $\mu _{JT}$ is written as if it is a constant. Should this be written as $\mu _{JT}$(T,P) to reflect its dependence on the initial temperature and pressure?

2) Is there any theoretical explanation for this phenomenon, or is it typically thought of as a phenominological effect that is just measured? In other words, does it relate to electrostatic interactions between atoms/molecules, polarizability, etc? I haven't thought about the JT effect for quite some time (decades!), but I'll look around for a textbook or two and look for answers also. David E. Volk 15:49, 11 July 2009 (UTC)

3) The original reference, should you want to incorporate it is: J. P. Joule and W. Thompson, Proc. Roy. Soc. (London), 143, 357, (1853). Another fine experiment conducted in a Brewery!

4) The JT effect is valid for liquids also, not just gasses, at least according to the thermo classic text by G. N. Lewis and M. Randall, Thermodynamics, 2nd Edition, revised by Pitzer and Brewer, McGraw-Hill Series in Advanced Chemistry (1961).