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US 5,287,702 AGranted
Carbon dioxide storage with thermoelectric cooling for fire suppression systems
AssigneePreferred CO.sub.2 Systems, Inc.
InventorsAndrew L. Blackshaw, Donald W. Hering
Life of this patent
Estimating the term…
Abstract
A long term pressurized carbon dioxide storage system for a fire suppression system includes an insulated tank (12) in communication with a chamber (52) chilled by a thermoelectronic refrigerator (50A, 50B) to condense carbon dioxide vapors and keep pressure in the tank below an upper limit to minimize boil off.
Claims40
A system for maintaining CO.sub.2 under pressure comprising:
- a pressure vessel having an interior for containing the CO.sub.2 under pressure;
- a chamber outside the pressure vessel;
- a tube interconnecting the chamber and the pressure vessel in fluid communication and terminating into the pressure vessel in an uppermost region of the pressure vessel interior;
- and
- thermoelectronic refrigerator means communicating with the chamber for chilling the chamber whereby to chill CO.sub.2 within the chamber and thereby reduce pressure within the pressure vessel.
2 more elements
A CO.sub.2 -based fire suppression system comprising:
- a pressure vessel having an interior for storing the CO.sub.2 under pressure, the pressure vessel having an outlet through which the stored CO.sub.2 may be expelled;
- valve means connected to the outlet for selectively permitting CO.sub.2 to be expelled from the vessel outlet;
- conduit means connected to the valve means for dispersing the expelled CO.sub.2 ;
- a chamber outside the pressure vessel;
- a tube interconnecting the chamber and the pressure vessel in fluid communication and terminating into the pressure vessel in an uppermost region of the pressure vessel interior;
- and
- thermoelectronic refrigerator means communicating with the chamber for chilling the chamber whereby to chill CO.sub.2 within the chamber and thereby reduce pressure within the pressure vessel.
4 more elements
Apparatus for chilling a gas under pressure comprising:
- a cylindrical tube having its ends sealed and having an aperture into the cylindrical tube, an interconnecting tube connected at one end to the cylindrical tube at the aperture and at another end to the gas under pressure for communicating the gas under pressure to the cylindrical tube;
- and
- thermoelectronic refrigerator means coupled to the cylindrical tube for drawing heat out of the tube whereby to chill gas under pressure within the tube.
Dependencies are inferred from the claim text.