Thermal Conductivity Measurement Device

[solocam92]

Looking to make a thermal conductivity measurement device. It would be nice if it could be used to measure contact resistance between two materials in addition to measuring the k value of a material.I rough schematic illustration of what I am thinking to do is attached.

 

[solocam92]

If anyone out there has had any experience or advice that they would be willing to share it would be greatly appreciated.

Thanks

 

[MintJulep]

ASTM C518, C177, C1114, C1363

 

[Tunalover]

I'd be surprised if there wasn't already out there instruments to measure both. Certainly one exists to measure thermal conductivity as I'm sure one or more of MintJulep's ASTM test methods will specify the device. As for thermal contact resistance, an ASTM test method may specify a device but I am less sure.


Tunalover

 

[btrueblood]

ASTM D 5470 – 06 Standard Test Method for Thermal Transmission Properties of Thermally Conductive Electrical Insulation Materials

 

[IRstuff]

Yes, there are instruments, although the second site seems to show a different measurement technique

http://thermophysical.tainstruments.com/instruments/thermal-conductivity-meters/

http://www.ctherm.com/products/tci_thermal_conductivity/

TTFN
faq731-376

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Of course I can. I can do anything. I can do absolutely anything. I'm an expert!

 

[Compositepro]

Drawing a sketch of the instrument is the easy part. Actually constructing an instrument that works accurately is quite complex. I've considered it in the past and did not proceed.

 

[EdStainless]

I have used a few of these over the years.
Yet get different TC values depending on which measurement method you use.
This is because it is so difficult to account for all of the biases and errors.
Find a lab that does this for a living and pay them, at least then you will get consistency.
(calibration is a bitch)

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[Tunalover]

I agree with EdStainless. A reputable lab will have a setup compliant to the ASTM spec and can produce the best results. Why reinvent the wheel?


Tunalover