Refrigeration – Storage of solidified or liquified gas – Liquified gas transferred as liquid
Patent
1995-05-24
1996-12-03
Kilner, Christopher
Refrigeration
Storage of solidified or liquified gas
Liquified gas transferred as liquid
62 501, 62 471, 62 481, 62 492, 62 505, F17C 702, F17C 902
Patent
active
055796460
ABSTRACT:
A cryogen delivery apparatus for delivering cryogen in a saturated state includes a vessel to contain the cryogen in liquid and vapor phases. The vessel has a headspace region and a heat exchanger located within the headspace region for indirectly exchanging heat between the vapor located within the headspace region and a liquid stream composed of the liquid phase of the cryogen. In case the cryogen is introduced into the vessel as a subcooled liquid, the vapor will condense into the liquid phase and the subcooled liquid will be converted into a saturated liquid. The saturated liquid will then be discharged from a liquid outlet connected to the heat exchanger. In the event the liquid enters the vessel as two-phase flow, the vessel will act as a phase separator. A branched supply line is provided having a liquid inlet branch connected to a bottom liquid inlet of the vessel so that a supply stream composed of the cryogen flows into the vessel. A vapor inlet branch of the branched supply line is connected to an inlet to the headspace. A heating element is provided to heat the vapor inlet branch so that liquid cryogen is vaporized to replenish vapor within the headspace that is depleted through condensation or discharge from a vapor discharge outlet of the vessel.
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Cassett Larry R.
Kilner Christopher
Rosenblum David M.
The BOC Group Inc.
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