CA2644871A1 - Method of measuring concentration of fuel - Google Patents
Method of measuring concentration of fuel Download PDFInfo
- Publication number
- CA2644871A1 CA2644871A1 CA002644871A CA2644871A CA2644871A1 CA 2644871 A1 CA2644871 A1 CA 2644871A1 CA 002644871 A CA002644871 A CA 002644871A CA 2644871 A CA2644871 A CA 2644871A CA 2644871 A1 CA2644871 A1 CA 2644871A1
- Authority
- CA
- Canada
- Prior art keywords
- concentration
- fuel
- accordance
- cathode
- reactive gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
A method of measuring concentration of a fuel is provided. First, a fuel cell unit having at least an anode, a cathode, and a membrane electrode assembly (MEA) is provided. Next, a fuel is supplied to the anode, while a reactive gas is supplied to the cathode. Then, the amount of the reactive gas supplied to the cathode is adjusted and the concentration of the fuel is estimated in accordance with the consumption rate of the reactive gas in the fuel cell unit.
Claims (28)
1. A method of measuring concentration of a fuel, comprising:
providing a fuel cell unit comprising at least an anode, a cathode, and a membrane electrode assembly (MEA);
supplying a fuel to the anode;
supplying a reactive gas to the cathode; and adjusting an amount of the reactive gas supplied to the cathode, and estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode.
providing a fuel cell unit comprising at least an anode, a cathode, and a membrane electrode assembly (MEA);
supplying a fuel to the anode;
supplying a reactive gas to the cathode; and adjusting an amount of the reactive gas supplied to the cathode, and estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode.
2. The method as claimed in claim 1, wherein a method of estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode comprises:
measuring an open circuit voltage of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the open circuit voltage and time.
measuring an open circuit voltage of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the open circuit voltage and time.
3. The method as claimed in claim 2, wherein the concentration of the fuel is estimated in accordance with a time point at which the open circuit voltage drops.
4. The method as claimed in claim 2, wherein the concentration of the fuel is estimated in accordance with a time period for the open circuit voltage to drop to a certain value.
5. The method as claimed in claim 2, wherein the concentration of the fuel is estimated in accordance with a speed at which the open circuit voltage drops.
6. The method as claimed in claim 1, wherein a method of estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode comprises:
measuring an output current of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the output current and time.
measuring an output current of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the output current and time.
7. The method as claimed in claim 6, wherein the concentration of the fuel is estimated in accordance with a time point at which the output current drops.
8. The method as claimed in claim 6, wherein the concentration of the fuel is estimated in accordance with a time period for the output current to drop to a certain value.
9. The method as claimed in claim 6, wherein the concentration of the fuel is estimated in accordance with a speed at which the output current drops.
10. The method as claimed in claim 1, wherein a method of estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode comprises:
measuring an output voltage of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the output voltage and time.
measuring an output voltage of the fuel cell unit; and estimating the concentration of the fuel in accordance with a relationship between the output voltage and time.
11. The method as claimed in claim 10, wherein the concentration of the fuel is estimated in accordance with a time point at which the output voltage drops.
12. The method as claimed in claim 10, wherein the concentration of the fuel is estimated in accordance with a time period for the output voltage to drop to a certain value.
13. The method as claimed in claim 10, wherein the concentration of the fuel is estimated in accordance with a speed at which the output voltage drops.
14 14. The method as claimed in claim 1, wherein the fuel cell unit comprises a direct methanol fuel cell unit.
15. The method as claimed in claim 1, wherein the reactive gas comprises air or oxygen.
16. The method as claimed in claim 1, wherein the fuel comprises a methanol solution, an ethanol solution, or a formic acid solution.
17. The method as claimed in claim 1, wherein a method of adjusting the amount of the reactive gas supplied to the cathode comprises stopping supplying the reactive gas to the cathode.
18. The method as claimed in claim 1, wherein a method of estimating the concentration of the fuel in accordance with a consumption rate of the reactive gas in the cathode comprises:
measuring a concentration of the reactive gas in the cathode; and estimating the concentration of the fuel in accordance with a relationship between the concentration of the reactive gas in the cathode and time.
measuring a concentration of the reactive gas in the cathode; and estimating the concentration of the fuel in accordance with a relationship between the concentration of the reactive gas in the cathode and time.
19. The method as claimed in claim 18, wherein the concentration of the reactive gas is measured through a sensor.
20. The method as claimed in claim 19, wherein the sensor comprises a sensor for measuring oxygen or a pressure gauge.
21. The method as claimed in claim 18, wherein the concentration of the fuel is estimated in accordance with a time period for the concentration of the reactive gas to drop to a certain value.
22. The method as claimed in claim 18, wherein the concentration of the fuel is estimated in accordance with the speed at which the concentration of the reactive gas drops.
23. The method as claimed in claim 18, wherein the fuel cell unit comprises a direct methanol fuel cell unit.
24. A method of measuring concentration of a fuel, comprising:
providing a fuel cell unit comprising at least an anode, a cathode, and a membrane electrode assembly (MEA);
supplying a fuel to the anode;
supplying a reactive gas to the cathode; and adjusting an amount of the reactive gas supplied to the cathode, and estimating the concentration of the fuel in accordance with a generation rate of a gaseous product in the cathode.
providing a fuel cell unit comprising at least an anode, a cathode, and a membrane electrode assembly (MEA);
supplying a fuel to the anode;
supplying a reactive gas to the cathode; and adjusting an amount of the reactive gas supplied to the cathode, and estimating the concentration of the fuel in accordance with a generation rate of a gaseous product in the cathode.
25. The method as claimed in claim 24, wherein a method of estimating the concentration of the fuel in accordance with the generation rate of the gaseous product in the cathode comprises:
measuring a concentration of the gaseous product in the cathode; and estimating the concentration of the fuel in accordance with a relationship between the concentration of the gaseous product in the cathode and time.
measuring a concentration of the gaseous product in the cathode; and estimating the concentration of the fuel in accordance with a relationship between the concentration of the gaseous product in the cathode and time.
26. The method as claimed in claim 25, wherein the concentration of the gaseous product is measured through a sensor.
27. The method as claimed in claim 26, wherein the sensor comprises a sensor for measuring carbon dioxide.
28. The method as claimed in claim 25, wherein the concentration of the fuel is estimated in accordance with the speed at which the concentration of the carbon dioxide increases or the time period for the concentration of the carbon dioxide to increase to a certain value.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW96144978 | 2007-11-27 | ||
| TW96144978 | 2007-11-27 | ||
| TW97143528A TWI473337B (en) | 2007-11-27 | 2008-11-11 | Method of measuring concentration of fuel |
| TW97143528 | 2008-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2644871A1 true CA2644871A1 (en) | 2009-05-27 |
| CA2644871C CA2644871C (en) | 2012-03-27 |
Family
ID=40673794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2644871A Active CA2644871C (en) | 2007-11-27 | 2008-11-26 | Method of measuring concentration of fuel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5366295B2 (en) |
| CA (1) | CA2644871C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101105364B1 (en) | 2010-05-19 | 2012-01-16 | 한국과학기술연구원 | Sensor and method for sensing fuel concentration, method and system apparatus for fuel recirculation of fuel cell using the same, fuel cell usage apparatus using the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4680530B2 (en) * | 2003-06-09 | 2011-05-11 | パナソニック株式会社 | Fuel cell system |
| JP4172792B2 (en) * | 2004-03-30 | 2008-10-29 | 株式会社東芝 | Method for detecting fuel concentration in direct methanol fuel cell and direct methanol fuel cell system |
-
2008
- 2008-11-26 JP JP2008300410A patent/JP5366295B2/en active Active
- 2008-11-26 CA CA2644871A patent/CA2644871C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP5366295B2 (en) | 2013-12-11 |
| CA2644871C (en) | 2012-03-27 |
| JP2009146894A (en) | 2009-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2006110780A3 (en) | Production of low temperature electrolytic hydrogen | |
| CA2394963A1 (en) | Method for detecting abnormality in fuel cell | |
| WO2011148262A3 (en) | Fuel cell system and control method therefor | |
| CA2698467A1 (en) | Fuel cell system and hydrogen leak judgment method in the system | |
| WO2005101543A3 (en) | Control apparatus and control method for fuel cell | |
| EP2017916A3 (en) | Shutdown of a fuel cell supplied with pure oxygen | |
| CN104181219A (en) | Formaldehyde gas sensor | |
| WO2007093868A3 (en) | Hydrogen supply for a fuel cell system | |
| US8507141B2 (en) | Membrane permeation adjustment in PEM fuel cell | |
| TWI344719B (en) | Fuel supplying and controlling method and fuel cell apparatus using the same | |
| CN102369620B (en) | Hydrogen concentration measuring device and fuel cell system | |
| CN102598381A (en) | Fuel cell system and control method for fuel cell system | |
| DK201170730A (en) | Reducing loss of liquid electrolyte from a high temperature polymer-electrolyte membrane fuel cell | |
| CA2644871A1 (en) | Method of measuring concentration of fuel | |
| JP4876368B2 (en) | Operation control of fuel cell system | |
| TWI274436B (en) | Method of supplying fuel to fuel cells | |
| JP2007220509A (en) | Fuel cell system | |
| CN208937141U (en) | A kind of liquid level sensor for direct methanol fuel cell system | |
| CN102222796A (en) | Proton exchange membrane fuel cell structure for measuring oxygen concentration distribution | |
| JP4769987B2 (en) | Apparatus and method for measuring fuel concentration | |
| CN101750464B (en) | Fuel concentration measuring device and method | |
| US8501491B2 (en) | Method of measuring concentration of fuel | |
| JP2005317436A5 (en) | ||
| CN103959529A (en) | Fuel-cell system | |
| CN113067012B (en) | Cathode air inlet control system and method of HT-PEMFC (high-temperature proton exchange membrane fuel cell) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |