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Thermal Conductivity Measurement Device

Thermal Conductivity Measurement Device

Thermal Conductivity Measurement Device

(OP)
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.

RE: Thermal Conductivity Measurement Device

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

Thanks

RE: Thermal Conductivity Measurement Device

ASTM C518, C177, C1114, C1363

RE: Thermal Conductivity Measurement Device

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

RE: Thermal Conductivity Measurement Device

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

RE: Thermal Conductivity Measurement Device

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

http://thermophysical.tainstruments.com/instrument...
http://www.ctherm.com/products/tci_thermal_conduct...

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

RE: Thermal Conductivity Measurement Device

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.

RE: Thermal Conductivity Measurement Device

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

RE: Thermal Conductivity Measurement Device

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

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