High pressure hydrogen electrical power generator

Patent metadata

Field	Value
Publication number	US-11094956-B2
Application number	US-201916273043-A
Country	US
Kind code	B2
Filing date	Feb 11, 2019
Priority date	Feb 9, 2018
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A hydride heat engine produces electricity from a heat source, such as a solar heater. A plurality of metal hydride reservoirs are heated by the heating device and a working fluid comprises hydrogen is incrementally move from one metal hydride reservoir to a success metal hydride reservoir. The working fluid is passed, at a high pressure, from the last of the plurality of metal hydride reservoirs to an electro-chemical-expander. The electro-chemical-expander has an anode, a cathode, and an ionomer therebetween. The hydrogen is passed from the anode at high pressure to the cathode at lower pressure and electricity is generated. The solar heater may be a solar water heater and the hot water may heat the metal hydride reservoirs to move the hydrogen. The working fluid may move in a closed loop.

First claim

What is claimed is:

1. A hydride heat engine comprising:
a) a hot water source;
b) a heating device that heats water to product said hot water source;
c) a multi-stage metal hydride compressor comprising;
i) a plurality of metal hydride reservoirs comprising a metal hydride forming compound;
ii) wherein the plurality of metal hydride reservoirs are coupled in series;

d) an electrochemical-expander comprising:
iii) an anode;
iv) a cathode;
v) an ionomer configured between and anode and cathode;

e) a working fluid comprising hydrogen;
wherein the heating device heats the plurality of metal hydride reservoirs to move the working fluid from a first metal hydride reservoir at a first pressure to a second metal hydride reservoir at a second pressure; wherein the second pressure is higher than the first pressure;
wherein the working fluid is passed to the electro-chemical-expander and wherein the hydrogen is transported from the anode to the cathode of the electro-chemical-expander to produce electricity; and
wherein the working fluid is in a closed loop and flows from the cathode of the electro-chemical-expander through the plurality of metal hydride reservoirs, to the anode of the electro-chemical-expander and finally through the ionomer to said cathode.

2. The hydride heat engine of claim 1 , wherein the heating device comprises a solar heating device.

3. The hydride heat engine of claim 2 , wherein the solar heating device is a solar hot water heater and wherein the hot water source is produced by the solar hot water heater and wherein the hot water source heats the plurality of metal hydride reservoirs.

4. The hydride heat engine of claim 3 , wherein the hot water source is in a closed loop and flows from the plurality of metal hydride reservoirs to the solar hot water heater.

5. The hydride heat engine of claim 1 , wherein the ionomer comprises a perfluorosulfonic acid ionomer.

6. The hydride heat engine of claim 5 , wherein the ionomer is a supported ionomer having a support layer coupled thereto.

7. The hydride heat engine of claim 6 , wherein the support layer is configured in the ionomer.

8. The hydride heat engine of claim 1 , wherein the ionomer has a thickness of no more than about 30 microns.

9. The hydride heat engine of claim 1 , wherein the ionomer has a thickness of no more than about 20 microns.

10. The hydride heat engine of claim 1 , wherein the ionomer has a thickness of no more than about 10 microns.

11. A hydride heat engine comprising;
a) a hot water source;
b) a heating device that heats water to product said hot water source;
c) a multi-stage metal hydride compressor comprising:
i) a plurality of metal hydride reservoirs comprising a metal hydride forming compound;
ii) wherein the plurality of metal hydride reservoirs are coupled in series;

d) an electrochemical-expander comprising:
iii) an anode;
iv) a cathode;
v) an ionomer configured between and anode and cathode;

e) a working fluid comprising hydrogen;
wherein the heating device heats the plurality of metal hydride reservoirs to move the working fluid from a first metal hydride reservoir at a first pressure to a second metal hydride reservoir at a second pressure; wherein the second pressure is higher than the first pressure;
wherein the working fluid is passed to the electro-chemical-expander and wherein the hydrogen is transported from the anode to the cathode of the electro-chemical-expander to produce electricity; and
wherein the metal hydride reservoirs are cooled by a flow of cold water.

12. The hydride heat engine of claim 11 , wherein the flow of cold water is from a body of water.

13. The hydride heat engine of claim 1 , further comprising a battery and wherein the electricity produced by the electrochemical-expander is stored in said battery.

14. The hydride heat engine of claim 1 , wherein the heating device comprises a solar heating device and wherein the solar heating device is a solar hot water heater that produces the hot water source and wherein the hot water source heats the plurality of metal hydride reservoirs.

15. A hydride heat engine comprising:
a) a hot water source;
b) a heating device that heats water to product said hot water source and comprises a solar heating device and wherein the solar heating device is a solar hot water heater that produces the hot water source and wherein the hot water source heats the plurality of metal hydride reservoirs;
c) a multi-stage metal hydride compressor comprising:
i) a plurality of metal hydride reservoirs comprising a metal hydride forming compound;
ii) wherein the plurality of metal hydride reservoirs are coupled in series;

d) an electrochemical-expander comprising:
iii) an anode;
iv) a cathode;
v) an ionomer configured between and anode and cathode;

e) a working fluid comprising hydrogen;
wherein the heating device heats the plurality of metal hydride reservoirs to move the working fluid from a first metal hydride reservoir at a first pressure to a second metal hydride reservoir at a second pressure; wherein the second pressure is higher than the first pressure;
wherein the working fluid is passed to the electro-chemical-expander and wherein the hydrogen is transported from the anode to the cathode of the electro-chemical-expander to produce electricity; and
wherein the metal hydride reservoirs are cooled by a flow of cold water and wherein the flow of cold water is from a body of water selected from the group consisting of: ocean, sea, river and lake.

16. The hydride heat engine of claim 14 , further comprising a series of valves to control the flow of the working fluid from a first metal hydride reservoir to a second metal hydride reservoir of the plurality of metal hydride reservoirs.

17. The hydride heat engine of claim 16 , comprising at least two electrochemical-expander configured in series.

18. The hydride heat engine of claim 17 , wherein the first metal hydride reservoir is coupled with the anode of a first electrochemical-expander and wherein the second metal hydride reservoir is coupled with the cathode of the first electrochemical-expander.

Assignees

• Xergy Inc

Inventors

• Bahar Bamdad
• Golben Peter
• Parmelee William
• Fackler Scott

Classifications

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• Y02P20/133

  Renewable energy sources, e.g. sunlight · CPC title

• H01M8/065

  by dissolution of metals or alloys; by dehydriding metallic substances · CPC title

• F24S90/00

  Solar heat systems not otherwise provided for · CPC title

• H01M2300/0082

  Organic polymers · CPC title