Abstract: A method for recharging a high pressure gas storage container unit comprises transporting a recharge gas container containing a fluid at a cryogenic temperature and low pressure; heating the fluid in the recharge gas container and the fluid expelled from the recharge gas container to ambient temperature; and filling the high pressure gas storage container with the heated fluid as a pressurized gas. A system for recharging gas at a high pressure level comprises a recharge gas container unit comprising a means for containing cryogenic liquid and a first means for heating the liquid, the first heating means disposed near an outlet portion of the containing means; a second means for heating operatively connected to the recharge gas container unit during recharge; and a high pressure storage container unit comprising means for storing gas at a high pressure, said storing means operatively connected to the second means for heating during recharge.

Abstract: An apparatus and method is disclosed for regulating flow of working fluid through parallel condensation tubes requiring subcooling. The apparatus provides an elongated restriction element extending into the outlet of the respective condensation tubes to the approximate point of onset of subcooling. The elongated restriction element is braced externally to the condensation tube with a support that is used for positioning and maintaining the elongated restriction element in the correct position. The elongated restriction element has a pentagonal cross-section and is slightly undersize with respect to the working fluid passageways through the condensation tubes. The restriction member significantly restricts flow of partially vaporized working fluid but does not significantly affect the flow of fully liquid working fluid.