WO2008011140A3 - Humidity sensor for fuel cells and combustion exhaust streams - Google Patents

Humidity sensor for fuel cells and combustion exhaust streams Download PDF

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Publication number
WO2008011140A3
WO2008011140A3 PCT/US2007/016449 US2007016449W WO2008011140A3 WO 2008011140 A3 WO2008011140 A3 WO 2008011140A3 US 2007016449 W US2007016449 W US 2007016449W WO 2008011140 A3 WO2008011140 A3 WO 2008011140A3
Authority
WO
WIPO (PCT)
Prior art keywords
humidity sensor
fuel cells
combustion exhaust
exhaust streams
enclosure
Prior art date
Application number
PCT/US2007/016449
Other languages
French (fr)
Other versions
WO2008011140A2 (en
Inventor
Nathan N Hurvitz
Carl Allan Kukkonen
Original Assignee
Viaspace Inc
Nathan N Hurvitz
Carl Allan Kukkonen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Viaspace Inc, Nathan N Hurvitz, Carl Allan Kukkonen filed Critical Viaspace Inc
Publication of WO2008011140A2 publication Critical patent/WO2008011140A2/en
Publication of WO2008011140A3 publication Critical patent/WO2008011140A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G01N2021/396—Type of laser source
    • G01N2021/399—Diode laser
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0332—Cuvette constructions with temperature control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/05—Flow-through cuvettes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Densities of water vapor can be detected and quantified at a high sampling rate for a gas. The gas can be contained within a sample chamber within or outside of an instrument enclosure. A first split beam passes through the enclosure and the sample chamber while a second split beam that passes only through the enclosure provides a reference that can be used to correct for ambient humidity in the instrument enclosure.
PCT/US2007/016449 2006-07-19 2007-07-19 Humidity sensor for fuel cells and combustion exhaust streams WO2008011140A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83224406P 2006-07-19 2006-07-19
US60/832,244 2006-07-19

Publications (2)

Publication Number Publication Date
WO2008011140A2 WO2008011140A2 (en) 2008-01-24
WO2008011140A3 true WO2008011140A3 (en) 2008-05-15

Family

ID=38957394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/016449 WO2008011140A2 (en) 2006-07-19 2007-07-19 Humidity sensor for fuel cells and combustion exhaust streams

Country Status (2)

Country Link
TW (1) TW200818587A (en)
WO (1) WO2008011140A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102353633B (en) * 2011-06-15 2013-09-11 西安毅达信息系统有限公司 Flue gas content laser on-line detection method and system
CN110770568B (en) * 2017-03-13 2023-04-04 Abb 瑞士股份有限公司 Dissolved gas analysis device, system and method
CN109975224B (en) * 2019-04-17 2024-04-05 西南交通大学 Gas shooting detection system
CN116046730A (en) * 2023-04-03 2023-05-02 宁德时代新能源科技股份有限公司 Electrolyte monitoring device, method, storage medium, and program product

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146092A (en) * 1990-05-23 1992-09-08 Ntc Technology, Inc. Gas analysis transducers with electromagnetic energy detector units
US20050018193A1 (en) * 2003-07-22 2005-01-27 Frank Chilese Apparatus and method for maintaining uniform and stable temperature for cavity enhanced optical spectroscopy
WO2005047872A1 (en) * 2003-10-16 2005-05-26 Spectrasensors, Inc. Method and device for detecting water vapor within natural gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146092A (en) * 1990-05-23 1992-09-08 Ntc Technology, Inc. Gas analysis transducers with electromagnetic energy detector units
US20050018193A1 (en) * 2003-07-22 2005-01-27 Frank Chilese Apparatus and method for maintaining uniform and stable temperature for cavity enhanced optical spectroscopy
WO2005047872A1 (en) * 2003-10-16 2005-05-26 Spectrasensors, Inc. Method and device for detecting water vapor within natural gas

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BASU ET AL: "In situ simultaneous measurements of temperature and water partial pressure in a PEM fuel cell under steady state and dynamic cycling", JOURNAL OF POWER SOURCES, ELSEVIER, AMSTERDAM, NL, vol. 159, no. 2, 10 January 2006 (2006-01-10), pages 987 - 994, XP005630110, ISSN: 0378-7753 *
CATTANEO H ET AL: "VCSEL based detection of water vapor near 940nm", SPECTROCHIMICA ACTA. PART A: MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, ELSEVIER, AMSTERDAM, NL, vol. 60, no. 14, December 2004 (2004-12-01), pages 3269 - 3275, XP004652913, ISSN: 1386-1425 *
SONG K ET AL: "Application of laser photoacoustic spectroscopy for the detection of water vapor near 1.38 mum", MICROCHEMICAL JOURNAL, NEW YORK, NY, US, vol. 80, no. 2, June 2005 (2005-06-01), pages 113 - 119, XP004850333, ISSN: 0026-265X *

Also Published As

Publication number Publication date
TW200818587A (en) 2008-04-16
WO2008011140A2 (en) 2008-01-24

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