Abstract: A system and method for storage and delivery of a cryogenic mixed gas is disclosed, the storage apparatus including a compact and lightweight dewar for containing cryogenic temperature mixed gas at supercritical pressure. Different heat exchangers associated with the dewar provide for heat input to the dewar to maintain gas therein in a single phase and provide continued expulsion energy. A backpack receives the dewar and includes means for quick connect of the dewar with an end use outlet, intermediate heat exchangers in the backpack conditioning the mixed gas for end use. No electrical input for fluid circulation is required.

Abstract: A system and method for storage and delivery of a cryogenic mixed gas is disclosed, the storages apparatus including a compact and lightweight dewar for containing cryogenic temperature mixed gas at supercritical pressure. Different heat exchangers associated with the dewar provide for heat input to the dewar to maintain gas therein in a single phase and provide continued expulsion energy. A backpack receives the dewar and includes means for quick connect of the dewar with an end use outlet, intermediate heat exchangers in the backpack conditioning the mixed gas for end use. No electrical input for fluid circulation is required.

Abstract: A system and method for body cooling is disclosed for use with a cryogenic mixed gas storage and delivery apparatus, the storage apparatus including a compact and lightweight dewar for containing cryogenic temperature mixed gas at supercritical pressure. The system includes a garment having a fluid circulation network thereat and a plurality of heat exchangers receiving cold mixed gas expelled from the dewar for heat exchange to cool fluid in the fluid circulation network. Different ones of the heat exchangers also provide for heat input to the dewar to maintain gas therein in a single phase and provide continued expulsion energy and for warming of the gas for end use. No electrical input for fluid circulation is required.

Abstract: A conditioning and loading apparatus and method are disclosed for gas storage at cryogenic temperature and supercritical pressure. The apparatus is self-contained and portable and includes first and second precooling stages utilizing heat exchange with vented system fluids to cool the gas received by the apparatus at supercritical pressure. A third cooling stage includes heat exchange in a liquid nitrogen bath before loading of the gas into a container.