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JPS57211048A - Measuring system for thermal conductivity - Google Patents

Measuring system for thermal conductivity

Info

Publication number
JPS57211048A
JPS57211048A JP9621281A JP9621281A JPS57211048A JP S57211048 A JPS57211048 A JP S57211048A JP 9621281 A JP9621281 A JP 9621281A JP 9621281 A JP9621281 A JP 9621281A JP S57211048 A JPS57211048 A JP S57211048A
Authority
JP
Japan
Prior art keywords
temperature
found
calorific value
nusselt number
sample
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.)
Pending
Application number
JP9621281A
Other languages
Japanese (ja)
Inventor
Satoru Fujii
Hiroshi Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP9621281A priority Critical patent/JPS57211048A/en
Publication of JPS57211048A publication Critical patent/JPS57211048A/en
Pending legal-status Critical Current

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

Landscapes

  • 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

PURPOSE:To find the thermal conductivity of a fluid sample simply with high accuracy, by using a heating body such as a thermistor etc. and an element having a temperature measuring function and also, another temperature measuring element and evaluating the Nusselt number of the heating body. CONSTITUTION:A heating body 4 consisting of a thermistor is heated by turning on an electric current by a constant-current power supply 7 and the temperature of generated heat is found by the relation between a standard resistance 8 and the value of resistance variation due to heat generation of the body 4. Further, the calorific value is found by the relation between both ends voltage of the body 4 and transmitted electric current. The data of the calorific value of the body 4 found through a potentiometer 9, the temperature of generated heat of the body 4 and detected temperature of a fluid sample 1 in a vessel 2 provided in a thermostat 3 which is detected by temperature measuring elements 5, 6 under a stationary condition, are put into a data processor 10. Then, the Nusselt number of the body 4 is computed from the difference of each temperature of the sample 1 and the generated heat and the heat conductivity of the sample 1 is found based on the Nusselt number, temperature difference and calorific value.
JP9621281A 1981-06-22 1981-06-22 Measuring system for thermal conductivity Pending JPS57211048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9621281A JPS57211048A (en) 1981-06-22 1981-06-22 Measuring system for thermal conductivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9621281A JPS57211048A (en) 1981-06-22 1981-06-22 Measuring system for thermal conductivity

Publications (1)

Publication Number Publication Date
JPS57211048A true JPS57211048A (en) 1982-12-24

Family

ID=14158932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9621281A Pending JPS57211048A (en) 1981-06-22 1981-06-22 Measuring system for thermal conductivity

Country Status (1)

Country Link
JP (1) JPS57211048A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233122A2 (en) * 1986-02-12 1987-08-19 Snow Brand Milk Products Co., Ltd. Method for measuring state of fluids
JPH04282433A (en) * 1991-03-11 1992-10-07 Snow Brand Milk Prod Co Ltd Method and apparatus for measuring concentration of liquid
JPH0560675A (en) * 1991-09-03 1993-03-12 Snow Brand Milk Prod Co Ltd Determination of apparent thermal conductivity of sensor sheath part and measurement of dynamic viscosity of fluid
JPH07253404A (en) * 1994-03-15 1995-10-03 Agency Of Ind Science & Technol Liquid thermal conductivity measuring method using natural convection heat transfer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124051A (en) * 1979-03-17 1980-09-24 Agency Of Ind Science & Technol Heat conductivity measuring method of fluid and its measuring apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124051A (en) * 1979-03-17 1980-09-24 Agency Of Ind Science & Technol Heat conductivity measuring method of fluid and its measuring apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233122A2 (en) * 1986-02-12 1987-08-19 Snow Brand Milk Products Co., Ltd. Method for measuring state of fluids
JPH04282433A (en) * 1991-03-11 1992-10-07 Snow Brand Milk Prod Co Ltd Method and apparatus for measuring concentration of liquid
JPH0560675A (en) * 1991-09-03 1993-03-12 Snow Brand Milk Prod Co Ltd Determination of apparent thermal conductivity of sensor sheath part and measurement of dynamic viscosity of fluid
JPH07253404A (en) * 1994-03-15 1995-10-03 Agency Of Ind Science & Technol Liquid thermal conductivity measuring method using natural convection heat transfer

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