WO2003069323A3 - Method for measuring thermal diffusity - Google Patents

Method for measuring thermal diffusity Download PDF

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Publication number
WO2003069323A3
WO2003069323A3 PCT/EP2003/001409 EP0301409W WO03069323A3 WO 2003069323 A3 WO2003069323 A3 WO 2003069323A3 EP 0301409 W EP0301409 W EP 0301409W WO 03069323 A3 WO03069323 A3 WO 03069323A3
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
diffusity
thermal diffusity
time difference
probes
Prior art date
Application number
PCT/EP2003/001409
Other languages
German (de)
French (fr)
Other versions
WO2003069323A2 (en
Inventor
Ulf Hammerschmidt
Original Assignee
Bundesrep Deutschland
Ulf Hammerschmidt
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 Bundesrep Deutschland, Ulf Hammerschmidt filed Critical Bundesrep Deutschland
Priority to AU2003227526A priority Critical patent/AU2003227526A1/en
Publication of WO2003069323A2 publication Critical patent/WO2003069323A2/en
Publication of WO2003069323A3 publication Critical patent/WO2003069323A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity

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  • Physics & Mathematics (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 Analyzing Materials Using Thermal Means (AREA)

Abstract

The invention relates to a method for the experimental determination of the thermal diffusity of solids, liquids and bulk products. The measurement is carried out by means of a Joule heat source which is embedded in the sample, and at least one temperature probe located at a known distance from the source. The time difference between the starting pulse and the maximum temperature of the probe, during a pulsed heat output from the heat source, represents the quantity for the desired variable. It is also appropriate to position two temperature probes at different known distances from the heater and to use the time difference between the maximum temperatures of said two probes as the quantity for determining the thermal diffusity.
PCT/EP2003/001409 2002-02-15 2003-02-13 Method for measuring thermal diffusity WO2003069323A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227526A AU2003227526A1 (en) 2002-02-15 2003-02-13 Method for measuring thermal diffusity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10206275.7 2002-02-15
DE2002106275 DE10206275B4 (en) 2002-02-15 2002-02-15 Method for measuring the thermal diffusivity

Publications (2)

Publication Number Publication Date
WO2003069323A2 WO2003069323A2 (en) 2003-08-21
WO2003069323A3 true WO2003069323A3 (en) 2003-12-24

Family

ID=27674666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/001409 WO2003069323A2 (en) 2002-02-15 2003-02-13 Method for measuring thermal diffusity

Country Status (3)

Country Link
AU (1) AU2003227526A1 (en)
DE (1) DE10206275B4 (en)
WO (1) WO2003069323A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344154B4 (en) * 2003-09-22 2006-08-03 Bundesrepublik Deutschland, vertr. d. d. Bundesministerium für Wirtschaft und Technologie, dieses vertr. d. d. Präsidenten der Physikalisch-Technischen Bundesanstalt Method and device for determining the volumetric specific heat of substances
DE102012020147B3 (en) * 2012-10-15 2014-01-30 Bundesrepublik Deutschland, endvertreten durch die Physikalisch-Technische Bundesanstalt (PTB) Method for determining thermal transport variable, such as thermal conductivity, involves heating substrate to be measured by linear heat source in impulsive manner, where temperature difference is measured depending on time
DE102016117215A1 (en) 2016-09-13 2018-03-15 Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Energie, Dieses Vertreten Durch Den Präsidenten Der Physikalisch-Technischen Bundesanstalt A method of determining a composition of a gaseous fluid and gas composition sensor
DE102016118129B4 (en) 2016-09-26 2019-03-21 Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Energie, Dieses Vertreten Durch Den Präsidenten Der Physikalisch-Technischen Bundesanstalt Method for determining a flow parameter and / or a thermal transport size of a fluid flowing through a passage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348245A2 (en) * 1988-06-24 1989-12-27 Honeywell Inc. Measurement of thermal conductivity and specific heat
US5052819A (en) * 1989-06-12 1991-10-01 Baratta Francis I Method of and apparatus for nondestructively determining the composition of an unknown material sample
DE29613243U1 (en) * 1996-07-31 1996-10-17 Draegerwerk Ag Gas sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513342C2 (en) * 1975-03-26 1986-12-11 Wolfgang 6090 Rüsselsheim Borkowetz Method and device for determining thermal conductivity and specific heat
DD248435A1 (en) * 1984-09-28 1987-08-05 Wismar Ing Hochschule HUMIDITY MEASUREMENT THROUGH ANALYSIS OF THE THERMAL RESPONSE TO WAERMEIMPULSE
EP1111377A1 (en) * 1999-12-23 2001-06-27 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method and device for determining the concentration of substances in a volume of liquid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348245A2 (en) * 1988-06-24 1989-12-27 Honeywell Inc. Measurement of thermal conductivity and specific heat
US5052819A (en) * 1989-06-12 1991-10-01 Baratta Francis I Method of and apparatus for nondestructively determining the composition of an unknown material sample
DE29613243U1 (en) * 1996-07-31 1996-10-17 Draegerwerk Ag Gas sensor

Also Published As

Publication number Publication date
DE10206275A1 (en) 2003-09-04
AU2003227526A1 (en) 2003-09-04
DE10206275B4 (en) 2007-01-04
AU2003227526A8 (en) 2003-09-04
WO2003069323A2 (en) 2003-08-21

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