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Title: Self-contained cryogenic gas sampling apparatus and method

Apparatus for obtaining a whole gas sample, composed of: a sample vessel having an inlet for receiving a gas sample; a controllable valve mounted for controllably opening and closing the inlet; a valve control coupled to the valve for opening and closing the valve at selected times; a portable power source connected for supplying operating power to the valve control; and a cryogenic coolant in thermal communication with the vessel for cooling the interior of the vessel to cryogenic temperatures. A method of obtaining an air sample using the apparatus described above, by: placing the apparatus at a location at which the sample is to be obtained; operating the valve control to open the valve at a selected time and close the valve at a selected subsequent time; and between the selected times maintaining the vessel at a cryogenic temperature by heat exchange with the coolant.
Inventors:
 [1];  [1];  [1];  [2]
  1. (Idaho Falls, ID)
  2. (Shelley, ID)
Issue Date:
OSTI Identifier:
870349
Assignee:
Lockheed Idaho Technologies Company (Idaho Falls, ID) INEEL
Patent Number(s):
US 5501080
Contract Number:
AC07-84ID12435
Research Org:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
Country of Publication:
United States
Language:
English
Subject:
self-contained; cryogenic; gas; sampling; apparatus; method; obtaining; sample; composed; vessel; inlet; receiving; controllable; valve; mounted; controllably; closing; control; coupled; selected; times; portable; power; source; connected; supplying; operating; coolant; thermal; communication; cooling; interior; temperatures; air; described; placing; location; obtained; time; close; subsequent; maintaining; temperature; heat; exchange; valve control; operating power; selected time; cryogenic temperature; source connected; gas sample; cryogenic temperatures; gas sampling; thermal communication; power source; heat exchange; air sample; sampling apparatus; valve mounted; sample vessel; /62/73/

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