--- David Weinshenker <[EMAIL PROTECTED]> wrote: > We've considered it, but it looks like the required > quantities > of LN2 would be awkwardly large... especially now > that I'm getting > down to the desired temperatures with mechanical > refrigeration. > (A domestic freezer won't reach -40 to -60 F, but > this temperature > range is within the capabilities of commercial > compressors.)
This should probably be looked at as an exercise in thermodynamics, but still might be interesting. It's known that air cools, when released from a highly pressurized volume. Say, today you can reasonably easy get air compressed to 200-300 bars. The question is, how much the air can cool when expanding from 300 bars to 1 bar, starting from normal (300K) temperature? Which model should be most appropriate here? Alexander __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ ERPS-list mailing list [email protected] http://lists.erps.org/mailman/listinfo/erps-list
