Hi guyz.

Currently I doing a project regarding to computer cooler (passive cooling). The main objective in the project is to replace current fluid in the heatpipe (mostly passive coolers have) with nanofluid. The nanofluid I can order directly from US.

I need some help from you guys for certain things.

First, what the best cooler (with heatpipe) I should test since this project need to do quite a lot of experiment to achieve some results.

Second, does the diameter of the heatpipe influence the performance?

Third, is there any local distibutor or supplier that I can cooperate with to do this project?

I think thats all I need help for now. Will updates if got added information.

Any comments and suggestions are welcome here.

Thanx

u can try xigmatek,ocz n thermalright cooler.yup,d diameter if the heatpipe influence a lot.i think d bigger d heatpipe,d better d performance.

i thought u did the nanofluid

Unfortunately I have to choose one only coz I have to make a lot of sample for test. AFAIK, cooler master heatpipe diameter is the biggest among the rest

Too costly to do the nanofluid. Even in Malaysia so hard to get

well im very interested in this research.
let me know what i can do to help.
might be revolutionary

Thanx for the support

Currently I just start this project. I have to plan properly since this project under government and got high budget.

First of all, what is the common fluid in the heatpipe? From previous research said that the fluid is acetone.

Hope expertise can clarify this

i highly doubt its acetone.
not only that, normally there isnt any fluid inside at all.
if you have been following nanofluid tech, there was a special metal based cooling system that uses an electromagnetic pump to push the fluid around a closed system.

if you ask me, you should put some research into not only putting the fluid into the heatpipes, but also put some kind of pump at the top to make the fluid flow.
check out the concept here :- http://arstechnica.com/journals/hardware.a...tor-jokes-ensue

do you have any white paper on the nanofluid? like the heat capacity and thermal resistance and stuff?
need more info on the fluid.

if you can get me all the related info as well as the fluid itself, i'll gladly give my IFX14, Achilles and Ultra 120extreme for this cause

This post has been edited by DaRkSyThE: Aug 22 2008, 03:09 PM

ok me gots some info here.
nanofluids show better thermal conductivity as opposed to water however only in small amount. the density of nanofluid is almost to that of water,particles are bigger than water particles but it would be utterly usedless unless you could find a way to pump the fluid around the heatpipes.

this quote was rather discouraging too

it could also be inefficient because if it is confined to only small tubes in a heatsink, the thermal contact is small as to compared to running the fluid through a radiator.

research in USA have shown that
hhmm so maybe we have to shift our focus from heatsinks to a small watercooling loop.
however if you see closely, if it settles then it might be good

let me know whether you are serious on persuing this cause

ps, it took me lots of time on this research.

This post has been edited by DaRkSyThE: Aug 22 2008, 03:25 PM

u from seremban?? i can give hand to conduct test..

From what I had read from some previous research, no pump needed to circulate the fluid. however, the research had mixed the nanofluid with pure water and just using heat pipe without fin like normal cooler. I will show that research later if u want to read it.

about the nanofluid, I still in progress and discussion with some expert here (Malaysia). Once I get it, i will show to u.

thanx for the support. really appreciate it

Based from one expert person in nanofluid, nanofluid wont easily clogging like other fluid. so, it will provide smooth flow in the container or tube like the heat pipe. later we will see whether its true or not after experiment done

Nanofluid has higher thermal conductivity, high critical heat flux which result to greater heat transfer compare to conventional pure fluids

so, we can expect that nanofluid will provide greater thermal performance than current fluid in the heatpipe.

my hometown at seremban. but my research at KL lor

do let me know, i would love to participate in this research as well, in the physics aspect..

yeah let me know too,
i would love to have some inside knowledge on this
beat my physics knowledge by a long stretch
but then again, SPM level physics is low.

i think most of the research based on thermodynamic

lol...i cant stretch your knowledge


One question : If i make some hole on the heat pipe to insert the nanofluid and then close it (tape,weld or etc) , does it drop the performance of the heat pipe?

performance shudnt drop
but i dun know bro, i tink liquid in the heatpipe without circulation will not see a significant diff in temps

wow thermodynamics research... this is interesting. this nanofluids... whats the boiling temp and freezing temp?? maybe it has a lower freezing point and a slightly higher boiling point compared to pure fluids then only it can work without pumps.

This post has been edited by glock88: Sep 1 2008, 05:09 PM

thermodynamics wouldnt be that hard to digest, would it?

@darkscythe
well, if the passing mark of Add Maths in SPM was 17%, i wonder what physics would be

brother dont underestimate thermodynamics... trust me... it may look easy but it actually aint. if u study thermodynamics in engineering... whatever u learn in the first year are just skimming the surface of the topic... lol... i start to sound like a lecturer ad... lol...

I already had decided what to do in this project.

a) Nanofluid in heatpipes only (without heat fins)
b) Nanofluid in heatpipes with fins (cooler)
c) Nanofluid in cooler with pump

Updates : After finish discuss with one professor from UK (he make a lot of research about nanofluid), i had choose alumina as my working fluid.

I will show the spec of the fluid later

damn cant wait to c the result.

by da way how the test going