Thermal measuring and testing – Transformation point determination – Between gaseous and liquid states
Patent
1983-09-12
1985-10-29
Yasich, Daniel M.
Thermal measuring and testing
Transformation point determination
Between gaseous and liquid states
16510421, 165 111, 374157, G01N 2502
Patent
active
045498164
ABSTRACT:
An apparatus for measuring the melting and boiling points of gas has a heat insulating tank, an inner tank within the insulating tank, a sample cell within the inner tank with a sample gas temperature measuring system. A piping system is provided having a heating route and a cooling route. The heating route has a heating flow rate control valve and a heating heat exchanged heated by a heating source connected in series with the control valve. The cooling route has a cooling flow rate control valve and a cooling heat exchanger connected in series with the cooling flow rate contorl valve. The heating and cooling routes are in parallel. The heating source for heating the heat exchanger has a Joule-Thomson expansion valve while the cooling part for cooling the cooling heat exchanger is coupled to a compressor for compressing and supplying a refrigerant such as Freon.
REFERENCES:
patent: 2671342 (1954-03-01), Kapff
patent: 3216239 (1965-11-01), Talbot et al.
patent: 3440865 (1969-04-01), Gamson
patent: 3589168 (1971-06-01), Hankison
patent: 4428684 (1984-01-01), Kuraoka
Hoxan Corporation
Oujevolk George B.
Yasich Daniel M.
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