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EVITherM

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EVITherM

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  1. EVITherM 1 Task 4.1 : Best Practice Guides  Compile information on measurement methods and laboratories  Direct the Evitherm user quickly to this information A user of Evitherm could find on our website :  Information on measurement techniques of thermophysical properties  Information on method to calibrate his own equipment  a help to choose : - the measurement technique suitable to his problem - a list of laboratories using this relevant technique EVITherM Bruno HAY 16/09/2003

  2. Scheme for guiding Evitherm userto measurement method or laboratories 2 Scheme for guiding Evitherm user to measurement method or laboratories Search information on measurement and calibration techniques, laboratories and equipment suppliers Choice of a measurement technique and/or laboratories 1 1 2 EVITherM Bruno HAY 16/09/2003

  3. Scheme for guiding Evitherm userto measurement method or laboratories 3 Information on measurement and calibration techniques, laboratories and equipment suppliers 1 Thermal diffusivity Physical properties Thermal conductivity Emissivity Specific heat Thermal expansion … EVITherM Bruno HAY 16/09/2003

  4. Scheme for guiding Evitherm userto measurement method or laboratories 4 1 Information on measurement and calibration techniques, laboratories and equipment suppliers Guarded hot plate Measurement techniques (P) Flash method (P) Hot wire method (P) Heat flow meter (S) Radial flow method (P) Comparative method (S) Axial heat flow method (P) … P : Primary or absolute method / S : Secondary method EVITherM Bruno HAY 16/09/2003

  5. Scheme for guiding Evitherm userto measurement method or laboratories 5 1 Information on measurement and calibration techniques, laboratories and equipment suppliers Flash method Measurement Laboratories Calibration Apparatus suppliers EVITherM Bruno HAY 16/09/2003

  6. Scheme for guiding Evitherm userto measurement method or laboratories 6 1 Information on measurement and calibration techniques, laboratories and equipment suppliers - Principle of measurement (short description) - Advantages / Disadvantages - Range of applicability Flash method – Measurement / Calibration Guides Standards Databases EVITherM Bruno HAY 16/09/2003

  7. Scheme for guiding Evitherm userto measurement method or laboratories 7 1 Information on measurement and calibration techniques, laboratories and equipment suppliers NameContact WebsiteCountry LNE Bruno Hay www.lne.fr France PTB IKE NPL … Laboratories and measurement providers using the flash method 1 2 3 4 5 EVITherM Bruno HAY 16/09/2003

  8. Scheme for guiding Evitherm userto measurement method or laboratories Technique Temperature Range Further information Laser flash technique 20 °C - 1500 °C Uncertainty :  3 % to  5 % Atmosphere : vacuum, inert gas Cylindrical specimens Diameter : 10 mm Thickness : from 1 to 4 mm 8 1 Information on measurement and calibration techniques, laboratories and equipment suppliers LABORATOIRE NATIONAL D’ESSAIS Adress Contact Qualification 29, avenue Roger Hennequin Bruno HAY COFRAC 78197 Trappes Cedex bruno.hay@lne.fr NMI France Tel: 33 1 30 69 12 20 Fax: 33 1 30 69 12 34 EVITherM Bruno HAY 16/09/2003

  9. Scheme for guiding Evitherm userto measurement method or laboratories 9 1 Information on measurement and calibration techniques, laboratories and equipment suppliers NameWebsiteCountry Netzsch Gerätebau GmbHwww.ngb.netzsch.com Germany … … … Flash method - Suppliers of apparatus 1 2 3 4 EVITherM Bruno HAY 16/09/2003

  10. Scheme for guiding Evitherm userto measurement method or laboratories 10 1 Information on measurement and calibration techniques, laboratories and equipment suppliers Netzsch Gerätebau GmbH Adress NETZSCH Gerätebau GmbH Tel +49 9287/881-0 Wittelsbacherstraße 42 Fax +49 9287/881-144 D-95100 Selb/Bayern E-mail: at@ngb.netzsch.com EVITherM Bruno HAY 16/09/2003

  11. Scheme for guiding Evitherm userto measurement method or laboratories 11 2 Choice of a measurement technique and/or laboratories Thermal diffusivity Physical properties Thermal conductivity Emissivity Specific heat Thermal expansion … EVITherM Bruno HAY 16/09/2003

  12. Scheme for guiding Evitherm userto measurement method or laboratories 12 2 Choice of a measurement technique and/or laboratories Insulating material Type of material Polymers Metals / Alloys Ceramics / Glasses … … EVITherM Bruno HAY 16/09/2003

  13. Scheme for guiding Evitherm userto measurement method or laboratories 13 2 Choice of a measurement technique and/or laboratories Characteristics of the material Further characteristics State Homogeneity Transparency Solid Homogeneous Opaque Moisture Thin film Porous With coating Liquid Composite Semi-transparent … Powder EVITherM Bruno HAY 16/09/2003

  14. Scheme for guiding Evitherm userto measurement method or laboratories 14 2 Choice of a measurement technique and/or laboratories Below RT Temperature range Minimum RT - 500 °C 500 °C - 1500 °C Above 1500 °C Maximum Below RT RT - 500 °C 500 °C - 1500 °C Above 1500 °C Uncertainty < 2% < 5% < 10 % < 15 % EVITherM Bruno HAY 16/09/2003

  15. Scheme for guiding Evitherm userto measurement method or laboratories Results of the request Technique Sample Geometry Laser Flash Technique Cylindrical specimens - Flat and parallel faces Diameter 5 mm to 20 mm - Thickness : 1 mm to 5 mm Hot Wire TechniquePair of square specimens with grooves - Flat and parallel faces L: 100 mm to 250 mm - W : 30 mm to 100 mm - T : 20 mm to 50 mm Guarded Hot PlatePair of cylindrical or square specimens - Flat and parallel faces Diameter or square 100 mm to 500 mm - Thickness : 20 mm to 50 mm 1 2 3 15 2 Choice of a measurement technique and/or laboratories Summary of the requirements Physical property Material State Thermal conductivity Metals / Alloys Solid, homogeneous, opaque Temperature range Uncertainty RT to 1500 °C < 5 % M EVITherM Bruno HAY 16/09/2003

  16. Scheme for guiding Evitherm userto measurement method or laboratories 16 2 Choice of a measurement technique and/or laboratories Geographical situation Qualification All countries All laboratories Austria England Certified labs. France France Qualified labs. Germany Italy NMI’s … EVITherM Bruno HAY 16/09/2003

  17. Scheme for guiding Evitherm userto measurement method or laboratories Technique Temperature Range Further information Laser flash technique 20 °C - 1500 °C Uncertainty :  3 % to  5 % Atmosphere : vacuum, inert gas Cylindrical specimens Diameter : 10 mm Thickness : from 1 to 4 mm 17 2 Choice of a measurement technique and/or laboratories LABORATOIRE NATIONAL D’ESSAIS Adress Contact Qualification 29, avenue Roger Hennequin Bruno HAYCOFRAC 78197 Trappes Cedex bruno.hay@lne.fr NMI France Tel: 33 1 30 69 12 20 Fax: 33 1 30 69 12 34 EVITherM Bruno HAY 16/09/2003

  18. Selection of measurement methods 18 Selection of measurement methods To propose to a Evitherm user the measurement method suitable to his requirements, we should : - Fix selection criteria (sample geometry, temperature range, material …) - Quantify these criteria for each measurement methods - Define a method allowing to find the suitable method from the criteria EVITherM Bruno HAY 16/09/2003

  19. Selection of measurement methods 19 Table 1Thermal Conductivity – Measurement Methods Measurement Method Main type of materials Temperature range Measurement range Atm. Laboratories Sample geometry Cylindrical sample diameter : 5 to 20 mm thickness : 1 to 5 mm Inert gas vacuum air Flash method Opaque Homogeneous ARCS, LNE NPL… [20 - 2000°C] [1-500 W/mK] Opaque Semi-transp. Homogeneous Composites 2 cylindrical or square samples flat and parallel faces diameter : 100 to 500 mm Thickness : 20 mm to 50 mm Guarded hot plate IKE, LNE NPL, PTB… < 1 W/mK [20 - 500 °C] air 2 square samples with grooves flat and parallel faces Length : 100 mm to 250 mm Width : 30 mm to 100 mm Thickness : 20 mm to 50 mm Refractory materials including powder IKE, NPL PTB… Hot wire method air [20 - 1500 °C] < 5 W/mK Cylindrical sample Diameter : 5 mm to 10 mm Thickness : 1 mm to 5 mm Inert gas vacuum air TemperatureWave method Opaque Homogeneous [20 - 2000 °C] [1-500 W/mK] IKE Electric Conducting materials Cylindrical sample Diameter : 5.5 mm, Length : 90 mm Four Probe Technique [50 - 1200 °C] [1-500 W/mK] IKE EVITherM Bruno HAY 16/09/2003

  20. Selection of measurement methods 20 Table 2Thermal Conductivity – Laboratories Temp. Range (°C) Sample geometry Measurement Methods Main type of materials Uncert. of measur. Country Qualif. Labs min max Cylindrical sample diameter : 10 mm thickness : 1 to 5 mm Solid materials (alloys, ceramics polymers) Laser flash method  5 % to  6 % 20 1500 COFRAC NMI LNE France Solid materials (thermal insulation products) • 0.5 % • to  1 % Pair of square samples flat and parallel faces square : 500 mm Thickness : 20 to 50 mm Guarded hot plate -10 60 EVITherM Bruno HAY 16/09/2003

  21. Selection of measurement methods 21 Selection of measurement methods 1 - Evitherm user expresses his requirements 2 - Coherences between the requirements and the characteristics of each method are checked 3 - The most relevant methods are proposed EVITherM Bruno HAY 16/09/2003

  22. Selection of measurement methods 22 Selection of measurement methods State of material Temperature l User requirements Total Solid Homog. Opaque 1500 °C 1-5 W/mK Flash method 1 1 1 1 1 5 Guarded hot plate 1 1 1 0 0 3 Hot wire method 1 1 1 0 1 4 EVITherM Bruno HAY 16/09/2003