How to calibrate and test THW

The Transient Hot Wire (THW) method is used to measure the thermal conductivity, thermal diffusivity and specific heat of liquids. Using the interactive demonstration below, you can learn how to calibrate and test with the THW. The reference material has been measured by an absolute method and values recorded.

 
1

Calibration Material
(Water)

3

 

2

THW Sensor

4

Calibration Result

Reference:
Paper: L. Loiselle, I. Fofana, and D. Hume. 2011. Influence of Transformer Oil Decay Products on its Thermal Conductivity. THERMAL CONDUCTIVITY 31, THERMAL EXPANSION 19.
Available at: https://books.google.ca/books?id=7tMSqG0HKyoC&pg=PA249&lpg=PA249&dq=Influence+of...

ASTM: ASTM D7896-14, Standard Test Method for Thermal Conductivity, Thermal Diffusivity and Volumetric Heat Capacity of Engine Coolants and Related Fluids by Transient Hot Wire Liquid Thermal Conductivity Method, ASTM International, West Conshohocken, PA, 2014, www.astm.org

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For more information visit Methods Requiring Calibration or Absolute Methods.

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