Heating and cooling enclosure for a gas chromatographic column

Details Heating and cooling enclosure for a gas chromatographic column Heating and cooling enclosure for a gas chromatographic column

1976-12-15

1978-06-27

Michalsky, Gerald A.

Heat exchange

Heating and cooling

Heating and cooling of the same material

73 231, 165108, 219201, 219300, 219400, B01D 1508, G01N 3108

Patent

active

040969088

ABSTRACT:
The enclosure comprises an insulating and demountable sealed box unit fitted with a closure lid and placed around a chromatographic column consisting of a metal tube of constant cross-section, said tube being arranged in the form of a helix and supplied with electric heating current which is cut-off for cooling purposes. The heating and cooling air is supplied through a coaxial injection pipe and nozzle, circulated axially through and then around the column within the box unit, then discharged through the bottom wall of a collector casing.

REFERENCES:
patent: 3290482 (1966-12-01), Dodd et al.
patent: 3403545 (1968-10-01), Carter
patent: 3422603 (1969-01-01), Redmond
patent: 4011904 (1977-03-01), Hope et al.

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