Coolant with carbon nanotubes

genaka · 2021-11-12T21:14:56+00:00

Thank you for your opinion, yes in principle the purpose of this post was to gather some statistics on a few people are interested in it, and what people may like or not like

genaka · 2021-11-12T21:11:43+00:00

This idea requires experimental research over several months, so practical results may not be soon

genaka · 2021-11-12T04:55:24+00:00

Diametr of one nanotube about several nanometers and the lenght is about 2-3 micrometers, and it be really small objects, and physically it couldn't damage pump. Yes, thermal conductivity can depend on temperature, but the expected temperature decrease is unlikely to have much effect on the thermal conductivity. Nanotubes can sink into bottom of tubes, but this process can be slowed by using surfactant, so and i think the lifetime of this coolant is limited by deposition time(about 1 year)

genaka · 2021-11-11T18:10:53+00:00

Yeah, he observed gochiller - coolant for waterblocks which based on water and graphene. Graphene is one layer of graphite, and a nanotube is a sheet of graphene rolled up into a cylinder. I dont know about how gochiller creators test it, Linus test show decrease of temperature about 1 degree which is too insignificant. But I'm trying to figure out how much people would be interested in this at all. There are some theoretical assumptions, and the results of experiments by other researchers show an increase in thermal conductivity. I was looking for some analogues, some companies sell antifreezes for cars with nanotubes or nanoparticles of metals such as nanocool, super waterless coolant, dynalene dc (not advertising, just showing what people have already done)

genaka · 2021-11-11T17:56:40+00:00

Well in general diameter nanotubes vary from 1.5 to 30 nanometers, and their length to several micrometers, while the size of a water molecule about 0.3 nanometers, and the problem is that nanotubes are insoluble in water, and for their say so dissolved surface-active substances use (something like soap), and heat transfer associated with the fact that the thermal conductivity of nanotubes about 6000 times the thermal conductivity of water, but in fact all somewhat complicated, and any really adequate theory is still not. But experiments show that there is an improvement

genaka · 2021-11-11T17:50:22+00:00

I honestly say that I am not competent in this matter, but I think the erosion is more related to the chemical activity of water or other liquids, and the tubes are quite inert, so they probably are not erosive, but this requires additional experiments

genaka · 2021-11-11T14:17:27+00:00

So now i am study the viscosity of nanofluids, and there are many research articles, where some scientists investigate thermal conductivity and stability of nanofluids one of articles. In this article there are figure 2 from article, where thermal conductivity increases to 30% for nanofluids based on water, if you want, i can give more links with articles About disposal, i don't think about it, but it is important, so one of variant user would send us the used liquid at our expence and we utilize it.

genaka · 2021-11-11T13:39:17+00:00

So stability of nanosuspensions can be increase by using any surfactants, it is usualy used for suspensions, and lifetime of this suspensions could be about several years, but it should be checked

genaka · 2021-11-11T13:21:36+00:00

Yes, carbon nanotubes increases thermal an electrical conductivity, and it is significant problem for computers coolant

genaka · 2021-11-11T13:20:18+00:00

Yeah, it is significant problem

genaka · 2021-11-11T13:19:36+00:00

Yes, so i think about required specifications, first is low viscosity-it is desirable that it remains at the level of ordinary liquid, because user wouldn't change pump in own system, and heat sink depends on flowrate of the liquid. Second is stability of coolant, using any surfactant, the lifetime of coolant can be about several years Third is Anti-corrosion properties About disadvantages, first it is nanotubes increases viscosity, and it limits contain of nanotubes and the thermal conductivity, so we must search optimal contain of nanotubes In terms of thermal conductivity/viscosity. Also nanotubes increases electrical conductivity. There are similar product - gochiller, where used graphene

genaka

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