The operations of a thermodynamic vent system (tvs) will be investigated with the goal of optimizing the performance of the cryogenic storage system for long term storage. a ten year storage life is the ultimate goal to be achieved. the effects of the vented gas on improving the performance of a… More

A self-contained breathing apparatus (scba) can be designed which can use liquid air for filling, operate at ambient conditions or under water, be attitude independent, and can be stored with no enrichment in oxygen. by use of the proper design criteria it will meet osha and nisoh requirements. the… More

Using technology now in existence and now being developed it is possible to build a high reliability, cryogenic oxygen refrigerator. the temperature range in which the refrigerator would function would be controllable between 70 and 140 kelvin. the basis for this refrigeration cycle would be ceramic… More

The use of supercritical cryogenic storage of air will permit the supply of breathing air for personnel engaged in emergency or hazardous materials activities. because air storage is at cryogenic temperature (less than 180 degrees c) there is considerable cooling available for the user as the air is… More

The use of supercritical cryogenic storage of air will permit the economical supply of air for personnel engaged activities which require isolation from the environment. The supercritical storage allows delivery of the air in any attitude and prevents oxygen enrichment either in storage or in use.… More

Future space exploration programs require large quantities of both cryogenic and non-cryogenic fluids to accomplish missions. Large volume depot systems will be required to provide in-space supply to satisfy these mission requirments. Currently, passive liquid acquisition devices employing multiple… More

"The proposed breathing apparatus makes uses of moderate pressure gases (?750 psi) and a low temperature (