A dewar vessel storage apparatus configured to hold at least two dewar vessels containing liquefied gas or cryo-compressed gas, comprising; a box having an outer, thermally insulating, wall; the box comprising a plurality of insulating cavities, each cavity configured to receive a single dewar vessel and is thermally insulated from each other cavity; a thermally insulating closure arrangement configured to close an open end of each cavity; a ventilation assembly comprising at least one conduit within the box configured to provide for venting of gas released from the dewar vessels when stored in the respective cavities of the box, the ventilation assembly configured to provide a gas outlet flow path from each cavity.

The disclosed invention is an improved TPW cell design that is designed to provide a method of removing contaminants from the TPW cell water, and improved resistance to breakage in shipping. An additional storage volume provides for transferring the liquid water from the cell body into the storage volume by inverting the cell, followed by a series of rotations. Subsequent distillation of the water into the cell body by a sub-boiling process (with vapor moving through a transfer tube and condensing in the cell body) results in removal of contaminants from the water in the cell body. The upper volume and transfer tube are configured so that transport damage is minimized by storing the liquid water in the storage volume during transport, and preventing any liquid water from moving from the storage volume into the lower cell body regardless of orientation of the cell during shipping.

A system delivers carbon dioxide to a sequestration facility which may have photosynthetic organisms, such as crops, plants, and trees. The system has a containment structure which houses a volume of liquid or solid carbon dioxide (dry ice). The containment structure has a containment structure inlet and a containment structure outlet. A gas source provides a fluid to the containment structure through the containment structure inlet. Upon entry into the containment structure, the gas or a saturated liquid encounters the solid or liquid carbon dioxide causing sublimation or evaporation, resulting in the formation of carbon dioxide gas or liquid which flows out of the containment structure through the containment structure outlet. The gas entering the containment structure may also have subcooled CO2 liquid or solid (snow), which replenishes the solid or liquid within the containment structure. To supplement evaporation or sublimation of the subcooled liquid or solid, heating means are used. A distribution line connected to the containment structure outlet delivers carbon dioxide gas or liquid which is flashed to gas upon release by CO2 emitters to the photosynthetic organisms.

A dewar vessel storage apparatus configured to hold at least two dewar vessels containing liquefied gas or cryo-compressed gas, comprising; a box having an outer, thermally insulating, wall; the box comprising a plurality of insulating cavities, each cavity configured to receive a single dewar vessel and is thermally insulated from each other cavity; a thermally insulating closure arrangement configured to close an open end of each cavity; a ventilation assembly comprising at least one conduit within the box configured to provide for venting of gas released from the dewar vessels when stored in the respective cavities of the box, the ventilation assembly configured to provide a gas outlet flow path from each cavity.

A CO.sub.2 energy storage system includes a storage tank that stores a CO.sub.2 slurry, including dry ice and liquid CO.sub.2, at CO.sub.2 triple point temperature and pressure conditions. The storage system also includes a first pump coupled in flow communication with the storage tank. The first pump is configured to receive the CO.sub.2 slurry from the storage tank and to increase a pressure of the CO.sub.2 slurry to a pressure above the CO.sub.2 triple point pressure. The energy storage system further includes a contactor coupled in flow communication with the first pump. The contactor is configured to receive the high pressure CO.sub.2 slurry from the pump and to receive a first flow of gaseous CO.sub.2 at a pressure above the CO.sub.2 triple point pressure. The gaseous CO.sub.2 is contacted and then condensed by the melting dry ice in the slurry to generate liquid CO.sub.2.

Disclosed embodiments include apparatuses for compressing dry ice. In an illustrative embodiment, an apparatus for compressing dry ice includes: a hollow cylinder; a post disposed coaxially in the cylinder; a piston defining an opening therein and being slidably disposed in the cylinder, the opening slidably receiving the post therein; a biasing device operatively coupled to the piston; an inlet port connectable to a source of liquid carbon dioxide and configured to introduce liquid carbon dioxide into the cylinder, the inlet port being further configured to expand liquid carbon dioxide to dry ice and to gaseous carbon dioxide; and an openably closable lid positionable among a first closed position configured to vent gaseous carbon dioxide from the cylinder, a second closed position configured to leakably close the cylinder to permit carbon dioxide flakes to be compressed in the cylinder, and an open position.

A CO.sub.2 energy storage system includes a storage tank that stores a CO.sub.2 slurry, including dry ice and liquid CO.sub.2, at CO.sub.2 triple point temperature and pressure conditions. The storage system also includes a first pump coupled in flow communication with the storage tank. The first pump is configured to receive the CO.sub.2 slurry from the storage tank and to increase a pressure of the CO.sub.2 slurry to a pressure above the CO.sub.2 triple point pressure. The energy storage system further includes a contactor coupled in flow communication with the first pump. The contactor is configured to receive the high pressure CO.sub.2 slurry from the pump and to receive a first flow of gaseous CO.sub.2 at a pressure above the CO.sub.2 triple point pressure. The gaseous CO.sub.2 is contacted and then condensed by the melting dry ice in the slurry to generate liquid CO.sub.2