Systems and methods for oxygen concentration with electrochemical stacks in series gas flow
AssigneeUnited States of America as represented by the Administrator of NASA
InventorJohn C. Graf
Life of this patent
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Abstract
Concentration of oxygen gas with electrochemical stacks arranged in series gas flow. A system includes a plurality of electrochemical stacks for extracting oxygen from an input gas, wherein the plurality of electrochemical stacks outputs oxygen gas and oxygen-reduced gas. The system includes a heat exchanger in fluid communication with the plurality of electrochemical stacks, wherein the heat exchanger consumes the input gas and the oxygen-reduced gas, and wherein the heat exchanger transfers heat from the oxygen-reduced gas to the input gas. The system includes a mechanical blower for driving the input gas into the heat exchanger. The system is such that the plurality of electrochemical stacks are organized in series gas flow.
Claims20
A system comprising:
- a plurality of electrochemical stacks for extracting oxygen from an input gas, wherein the plurality of electrochemical stacks output oxygen gas and oxygen-reduced gas;
- a heat exchanger in fluid communication with the plurality of electrochemical stacks, wherein the heat exchanger consumes the input gas and the oxygen-reduced gas, and wherein the heat exchanger transfers heat from the oxygen-reduced gas to the input gas;
- and
- a mechanical blower for driving the input gas into the heat exchanger;
- wherein the plurality of electrochemical stacks are organized in series gas flow.
Dependencies are inferred from the claim text.