I am working on the natural convection in nanofluids in a square cavity in the temperature range of 30 - 90 degree Celsius. Which type of thermocouples will be best suited to measure the temperature of nanofluids by considering the fluctuation in temperature due to the Brownian motion of nanoparticles.
Can I use the T-type thermocouples?
What will be the effect of thermocouple's tip diameter on the measurement of temperature?
In principle any kind of sensor will use part of the sample energy (temperature) to produce results, I am wondering why you are trying to use thermocouples, (metals are highly thermal conductive), in your place I try thermistors such as pt 1000 (as small as possible), of course accuracy will depend on the instrumentation behind the temperature sensor
Thank you Mr. Jose...
But when I search the literature, most of the investigations used the thermocouples to measure the temperature of nanofluids and reported results.
What will be the effect of thermal conductivity of thermocouples on the temperature measurement. ?
depending on the thermocouple size, it can lead to an error (overestimate) due to the high thermal conductivity of the metal, in any case T-type is a good option for your application when you asure the thermocouple size is compatible with your sample size
Thanks once again Mr. Jose...
The thermocouples, which I am using, have the bead size of 1 - 2 mm, while the Brownian velocity of nanoparticles is about the order of manometers. Whether it is ok to use such type of thermocouples at nanoscale?
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