owh ic...lolz

yeah...me too

i wonder what will happen to all O-rings,,..

this is apparently very amusing indeed~ =) =) however..1 question...sniper, are you "rendaming" the tubing at room temperature? or constant 40'c on idle CPU temp?

just a question that got into my head..=P if it works..i'm willing to spend on Zalmans Reservoir V2 =) and pour vodka in lolz..or Chivas or JackDaniels..i do hv 1/2 a bottle of chivas wif me

Mmm....good question. It's at room temperature since it's a lil troublesome to keep it heated up 24/7 for long term.

As for update, absolutely nothing is happening to the tygon thus far.

Tonight gonna try to see if there's a spare o ring that I can throw in to up the ante a bit.


Mmmm....

http://www.tygon.com/media/documents/S0000...13/tygr3603.pdf

Here it says that R3603 is resistant to most inorganic chemicals and corrossive gasses.

But here says not recommended for alcohol.

http://www.flexiblecomponents.com/data/che...tance.asp?ID=87

This post has been edited by sniper on the roof: Oct 24 2006, 01:11 PM

i think tygon would survive from the alcohol since most of the laboratories use them because of their chemical resistive (not all unfortunately). yea, dump in some plastic or rubber made stuff, such as o ring would be good for experimenting.

Edit : Oh crap, guys, there is no point for us to continue this test anymore. the ingredients for vodka consists of various types of flavorings, water and alcohol. and i just found out that the alcohol used by vodka is ethanol based. ethanol has a viscosity of 10.7 × 10-4 while water has got a viscosity of 8.90 × 10-4 (both in the unit of Pascal second and both in the temp of 25 degree celcius). so there is no way for vodka's viscosity to be lower then water somemore there are so many types of flavoring added to the vodka wic would greatly decrease the viscosity of it. and also the evaporates theory doesn't make any sense in this case because its in a closed loop, and liquid shall not be able to evaporate. maybe i'm wrong, so do correct me.

note : the smaller viscosity it has, the faster the liquid flow.

This post has been edited by ddww: Oct 24 2006, 03:05 PM

Chemistry, Biology 101

Ethanol C2H5OH, dicarbon pentahydrogen hydroxide, The C2H5 portion is soluble in organic compound while the OH is soluble in water. (Ethanol is an effective disinfectant in that it strips the protective lipids of bacterial/fungi/alge.. and the cells literally disintegrates. Ethanol is also a drying agent and denatures proteins. It is at 70% ethanol that it has the highest disinfecting power. More than 18% ethnanol is required to stop any bacterial growth. Ethanol greater than 50% is easily flameable.) This property is where plastics/rubber are prone to disolve. The hidroxide portion of ethanol may react when exposed to certain organic compound. Therefore your water cooling setup will be free from living contaiminants. Absolute ethanol boiling point is 78.4 °C.
Ethanol has a heat capacity of 2.4 J/g K, while water has a capacity of 4.2 J/g K. Therefore water has a higher capacity to store heat energy, while alcohol has a higer ability to disipate heat. Same with aluminium and copper with the same weight.. Aluminium stores more heat energy than copper, but copper dissipates heat faster, one of the reasons while heatsink touching processors core are copper and heatsink fins are mostly aluminium.

Ethanol in water also reduces surface tension, therefore increases the capillary action of the watery liquid.

B.t.w viscosity of ethanol and water is so similiar that is plays very little role in the ability of the pump`s flow rate.

Effectiveness of liquid use for cooling is more of heat capasitance as mentioned. In a close system...

This post has been edited by BeastX: Oct 24 2006, 04:20 PM

with these, i raised a few question,
1 - Ethanol greater than 50% is easily flameable. This property is where plastics/rubber are prone to disolve. With this, does it ever means that 25% of alcohol will do any harm to the plastic or rubber?

2 - Absolute ethanol boiling point is 78.4 °C. Ethanol has a heat capacity of 2.4 J/g K, while water has a capacity of 4.2 J/g K. Therefore water has a higher capacity to store heat energy, while alcohol has a higer ability to disipate heat.
The heat capacity and boiling point does not simply determine the heat transfer capability of a liquid does it?

3 - just to confirm, alcohol does not corrode copper and brass does it?

1. Edited my statement ... the percentage I have given are examples.. Organic compounds (rubber/plactics) that are reactive with ethanol will react with ethanol no matter the amount used. Chemical reaction is based on 1. strenght of reaction of the compounds. 2. present of compounds.. decreasing one particular compound decrease chance of compounds in contact with each other that triggers reaction. Therefore chemical reaction may last days/months/years until an equilibrium is reached.

2. Heat transfer (fizik) has a direct correlation with heat capasitance (Energy needed to increase one Kelvin) of the liquid phase, vanderWaals energy, molecular vibration, molecular movement and so on. Boiling point is where the liquid has reach its maximum heat storage ability and additional heat is transfered to the phase change to gaseous molecules.

3. Pure H2O has a much higher corrosive ability than ethanol... It is the measurement of the ability of the H+, proton to disassociate from the molecule for reaction.

This post has been edited by BeastX: Oct 24 2006, 04:43 PM

So....do I drink the vodka now?

hahaha~~ well...does alcohol have certain chemical reactions when reaches boiling point? like ethanol at 78.4'c? I mean~ for Intel chips..they can easily reach 60'c to 65'c with ease especially for a prescott...

So, here are a few things we already know: -

1) The Vodka doesnt hv any effect on the Tygon tubing yet
2) Alcohol has lesser corrosive feature than water on metal / copper

Sounds good~ now..on to a live test!? =)

erm... when do i learn those chemistry? its giving me a hard time understanding those above...

erm... ok, like this, wat happen to water at its boiling point? CPU reaches 70C does not mean tat the liquid in it would also be heated up to tat temp. there would always been heat losses during the heat transfer. copper does not fully transfer the heat generates by the CPU. aiks... i make this so complicated. not good in explaining. (so just for u to understand, CPU temp is always 8~20 degree higher than liquid used to cool it.)

owh i see...thats clearer now...

SPM science, and a more complete/detailed formulas the (rare) STPM or A-levels. First/2nd year university.

Temperature of the liquid used depends on the propertiies of the liquid, flow rate of the pump, amount of liquid reservoir and efficiency of the radiator. The temperature of the liquid varies through the system. Given time (..stagnant liquid..) the temperature of the liquid will be the same as the copper heat exchanger.

This post has been edited by BeastX: Oct 25 2006, 06:07 PM

ah ic..then ill have to wait till then and understand more...

lets gooo~~~ live test~~ malaysias own myth busting!~ lets see some pics! ^.^v

yupe, it indeed depends on the liquid used. however, liquid used in our daily WCS is quite limited. does not really agree upon the bold part above. tat condition does not apply for life water.

still waiting the status of tygon and o-ring from sniper

I think Tygon will not deteriorate, O rings I dunno.

But still why would you want to put alcohol in the loop? Won't make a difference one.

who knows. but i really really think that the best improvement (if got) would not be more than 2degree C.