| 摘要 |
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.
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