초록 ▼

A system that includes an equipment package for separating nitrogen from air to produce enhanced oxygen air for use by divers. The package is combined with a pressure storage tank for air that is coupled to the package. A pressure storage tank is provided for enhanced oxygen air. A fill station incl

A system that includes an equipment package for separating nitrogen from air to produce enhanced oxygen air for use by divers. The package is combined with a pressure storage tank for air that is coupled to the package. A pressure storage tank is provided for enhanced oxygen air. A fill station including a high pressure gauge and a high pressure oxygen sensor is provided to fill divers' tanks. A compressor receives the enhanced oxygen air from the package and delivers high or low pressure enhanced oxygen air to the pressure storage tank via a pressure filter. Valving is provided for selectively controlling the flow in the system.

대표청구항 ▼

[ I claim:] [1.] A process for supplying enhanced oxygen air for use by divers as a life support system comprising the steps of:(a) providing a supply of pressurized feed air;(b) reducing the pressure of said pressurized feed air, with cooling, to 50-400 p.s.i.g.;(c) modifying the temperature of the

[ I claim:] [1.] A process for supplying enhanced oxygen air for use by divers as a life support system comprising the steps of:(a) providing a supply of pressurized feed air;(b) reducing the pressure of said pressurized feed air, with cooling, to 50-400 p.s.i.g.;(c) modifying the temperature of the reduced pressure feed air to a preselected value resulting in temperature modified, reduced pressure feed air;(d) separating nitrogen from said temperature modified, reduced pressure feed air by a permeable membrane gas separation system using a bundle of hollow fibers resulting in enhanced oxygen air;(e) discharging the nitrogen from the separation system;(f) discharging the enhanced oxygen air from the separation system;(g) controlling the oxygen content of the discharged enhanced oxygen air by varying the flow rate of the nitrogen discharge;(h) compressing the discharged enhanced oxygen air to a preselected pressure; and(i) storing the compressed enhanced oxygen air as breathable air useable underwater.