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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

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Evitherm

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


Scheme for guiding evitherm user to measurement method or laboratories

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


Scheme for guiding evitherm user to measurement method or laboratories1

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


Scheme for guiding evitherm user to measurement method or laboratories2

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


Scheme for guiding evitherm user to measurement method or laboratories3

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


Scheme for guiding evitherm user to measurement method or laboratories4

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


Scheme for guiding evitherm user to measurement method or laboratories5

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


Scheme for guiding evitherm user to measurement method or laboratories6

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 [email protected] NMI

France Tel: 33 1 30 69 12 20

Fax: 33 1 30 69 12 34

EVITherM Bruno HAY 16/09/2003


Scheme for guiding evitherm user to measurement method or laboratories7

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


Scheme for guiding evitherm user to measurement method or laboratories8

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: [email protected]

EVITherM Bruno HAY 16/09/2003


Scheme for guiding evitherm user to measurement method or laboratories9

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


Scheme for guiding evitherm user to measurement method or laboratories10

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


Scheme for guiding evitherm user to measurement method or laboratories11

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


Scheme for guiding evitherm user to measurement method or laboratories12

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


Scheme for guiding evitherm user to measurement method or laboratories13

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


Scheme for guiding evitherm user to measurement method or laboratories14

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


Scheme for guiding evitherm user to measurement method or laboratories15

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 [email protected] NMI

France Tel: 33 1 30 69 12 20

Fax: 33 1 30 69 12 34

EVITherM Bruno HAY 16/09/2003


Selection of measurement methods

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


Selection of measurement methods1

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


Selection of measurement methods2

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


Selection of measurement methods3

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


Selection of measurement methods4

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


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