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A system for filling transportable tanks with a cryogen, such as low pressure liquid carbon dioxide. A holding chamber is supplied with liquid CO2 from a storage vessel system, and the pressure of liquid CO2 is reduced to the triple point to create CO2 snow and form a low-temperature coolant reservo

A system for filling transportable tanks with a cryogen, such as low pressure liquid carbon dioxide. A holding chamber is supplied with liquid CO2 from a storage vessel system, and the pressure of liquid CO2 is reduced to the triple point to create CO2 snow and form a low-temperature coolant reservoir. CO2 vapor from the chamber is compressed and returned to the storage vessel system. Liquid CO2 can be supplied simultaneously to the tanks of several vehicles at below about 125 psig, and vapor from these tanks is promptly condensed by melting CO2 snow in the holding chamber. Standby cooling of vehicle cargo compartments can also be effected with recovery of the CO2 vapor using an auxiliary compressor.

대표청구항 ▼

A method for supplying tanks with liquid CO2, which method comprises creating a low-temperature coolant reservoir of solid carbon dioxide in a chamber at the triple point pressure or below, providing a source of liquid CO2 at a higher pressure than said triple point pressure, supplying said higher p

A method for supplying tanks with liquid CO2, which method comprises creating a low-temperature coolant reservoir of solid carbon dioxide in a chamber at the triple point pressure or below, providing a source of liquid CO2 at a higher pressure than said triple point pressure, supplying said higher pressure liquid CO2 to a tank, removing CO2 vapor from the tank as said higher pressure liquid CO2 is being supplied and transferring said removed CO2 vapor from the tank to said chamber and condensing said vapor by melting said solid CO2 in said reservoir.