Caloremeter tests on electrical components
Caloremeter tests on electrical components
(OP)
I am looking for a commercially available system for measuring heat given off by electrical device we are developing at work.
Most calorimeters I see are for chemical or organic applications.
Heat flow would be very small 0-2 W. 10-25 deg C. 300 mm cubed
Thanks in advance
Most calorimeters I see are for chemical or organic applications.
Heat flow would be very small 0-2 W. 10-25 deg C. 300 mm cubed
Thanks in advance





RE: Caloremeter tests on electrical components
ht
David Baird
Sr Controls Designer
EET degree.
Journeyman Electrician.
RE: Caloremeter tests on electrical components
Does your system do actual work, or is it static? If static, you can just measure input watts, which will equal output heat...
Good on ya,
Goober Dave
RE: Caloremeter tests on electrical components
RE: Caloremeter tests on electrical components
As for measurement, it would be a bit tricky, although you can do it with IR thermometers or the classic approach of immersing the assembly in something like Fluorinert, and measure the temperature rise, ala a really simple calorimeter.
That said, however, your system appears to be quite large, and presumably, with commensurately large surface area. Using a fairly low heat transfer coefficient, and assuming 4 sides of 300mm square, the surface temperature rise would only be about 1°C, assuming that the heat is uniformly spread. With something that large calorimetry would be also be tricky to do, since you need to insulate the fluid from the external ambient, and the amount of heat is low compared to the volume, thus requiring an extended test duration.
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RE: Caloremeter tests on electrical components
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RE: Caloremeter tests on electrical components
http
RE: Caloremeter tests on electrical components
You were right first time IRstuff with size I was looking for test volume 300 x 300 x 300 mm.
I have been looking for OEM calorimeters but most are for chemical or material test with very small sample size.
I know systems are expensive.
Purpose is analysis of energy in and energy out of device and to work out what proportion is heat or other forms of energy, EM, RF, mechanical etc.
RE: Caloremeter tests on electrical components
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RE: Caloremeter tests on electrical components
Setaram is the market leader but does have anything big enough.
HEL has this
http://w
International Thermal Instruments has this
http://iti
They will all build system to suit your needs.
If there is an ISO test for what you are doing searching for the test may some up with more results.
IRstuff has anyone built a commercial "dunk calorimeter"? They sound less complicated than the units that measure actual heat flow.
RE: Caloremeter tests on electrical components
Actually, if on reading through your first link, it sounds like the calorimetry is also through dunking, albeit with air as the fluid and with more complicated instrumentation.
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RE: Caloremeter tests on electrical components
RE: Caloremeter tests on electrical components
RE: Caloremeter tests on electrical components
I was hoping a complete solution might be available to buy. So far complete systems only deal with very small samples.
I did build a system in a insulated enclosed chamber and many thermocouples. Calibrated system using a heater or known power output. Takes a long time to settle both for calibration and test. 8-24 hours.
I would be worried dunking would increase settling time as the heat sink would be greater.
RE: Caloremeter tests on electrical components
RE: Caloremeter tests on electrical components
interest. They have a lot of training seminars listed in the US, some online.
I need a bigger monitor for these old eyes.
http://www.setaram.com/Calorimetry.htm