The extraction econu00c8mica and energy efficient oxygen of ambient air for portable use and domestic.

摘要

The extraction econu00c8mica and energy efficient oxygen of ambient air for use in portable and household. The present invention relates to an apparatus and to a process for separating oxygen from air, operating at substantially atmospheric pressure and recovering the energy used for cooling the incoming air.An ambient air inlet leads from the atmosphere into a container for containment of gases. A criorresfriador has a surface cooled in the container, to condense directly oxygen from the air, an atmospheric pressure substantially.The criorresfriador cools the cold surface to a temperature higher than the temperature of the boiling point of nitrogen and not higher than the temperature of the boiling point of the oxygen for the condensation of oxygen. A liquid / gas separator separates the liquid oxygen from residual gases, both flowing through separate outputs.The air is propelled by the system at a pressure substantially to atmospheric, for an impeller of the air, a heat exchanger recovers the energy cooling and desumidifica the incoming air by heat transfer from the incoming air to the exhaust gases.