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Heavy Water - Page 3

post #21 of 32
^ Probably can use gas cooling in a WC kit, just hope to high heaven the PSI doesn't implode on your Res.
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post #22 of 32
Quote:
Originally Posted by Fyrestorm View Post
^ Probably can use gas cooling in a WC kit, just hope to high heaven the PSI doesn't implode on your Res.
You'd burn the pump out in seconds
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post #23 of 32
Quote:
Originally Posted by ChielScape View Post
no country that doesnt already have them is allowed by the US. >_>
i wish our government would grow some balls and get some for us.
Its not the US saying no, its the international community via the Non-Proliferation Treaty.

I cant really see much point in running a Heavy Water system, as you will probably never get the temps to justify it.
    
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post #24 of 32
Quote:
Originally Posted by Fusion Racing View Post
To be honest, i can see why he had a problem with your earlier posts - they come across as ignorant and aggressive...

While the Germans were trying to make a nuclear missile during the war, they never even really cracked nuclear technology in the way that America and Russia did. However a lot of the Russian nuclear technology came from the German scientists at the end of the war.

Your earlier posts seem to give the impression that you thought that Nazi's had a lot of nukes and that the USA just got all of their technology from them. They didn't, so think about how you have worded your posts before complaining about someone when you yourself have got it wrong.

You also seem to be saying that because he wants to try heavy water, he must be from the middle east and therefore IS most definitely a terrorist who wants to nuke us... well... im not even going to explain why you were wrong here.

You seemed to be the one who was trolling, then you actually decide to reply in a slightly intellectual manner... but you don't have much to stand on due to your earlier childish and ignorant posts.

Now, lets get back on topic instead of having some stupid argument over who invented nuclear technology.
You dont need to be the most sensitive person in the world to understand I was messing about. ChielScape seemed awfully serious. Itellectual debates on the world wars are continual pissing up the wall contests.

I was kinda curious myself now about what the difference between heavy water and "normal" light water.

Freezing point (°C) 3.82(H) 0.0(L)

Boiling point (°C) 101.4(H) - 100.0(L)

Density (at 20°C, g/mL) 1.1056(H) - 0.9982(L)

Temp. of maximum density (°C) 11.6(H) - 4.0(L)

Viscosity (at 20°C, mPa·s) 1.25(H) - 1.005(L)

Surface tension (at 25°C, μJ) 7.193(H) - 7.197(L)

Heat of fusion (cal/mol) 1,515(H) - 1,436(L)

Heat of vaporisation (cal/mol) 10,864(H) - 10,515(L)

pH (at 25°C) 7.41(H) (sometimes "pD") 7.00(L)


Heavy water benefits seem to have been merely to stabilize neutron degradation and ineraction, nothing to do with its cooling capacity. From what Ive read, maybe I misinterpreted it.
post #25 of 32
Quote:
Originally Posted by keyboard_commando View Post
You dont need to be the most sensitive person in the world to understand I was messing about. ChielScape seemed awfully serious. Itellectual debates on the world wars are continual pissing up the wall contests.

I was kinda curious myself now about what the difference between heavy water and "normal" light water.

Freezing point (°C) 3.82(H) 0.0(L)

Boiling point (°C) 101.4(H) - 100.0(L)

Density (at 20°C, g/mL) 1.1056(H) - 0.9982(L)

Temp. of maximum density (°C) 11.6(H) - 4.0(L)

Viscosity (at 20°C, mPa·s) 1.25(H) - 1.005(L)

Surface tension (at 25°C, μJ) 7.193(H) - 7.197(L)

Heat of fusion (cal/mol) 1,515(H) - 1,436(L)

Heat of vaporisation (cal/mol) 10,864(H) - 10,515(L)

pH (at 25°C) 7.41(H) (sometimes "pD") 7.00(L)


Heavy water benefits seem to have been merely to stabilize neutron degradation and ineraction, nothing to do with its cooling capacity. From what Ive read, maybe I misinterpreted it.


Thats what I had always thought. Heavy water being more stable that normal h2o.
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post #26 of 32
I always wondered how those cold press bags that they use in sports work. They have some kind of crystals inside that react to warmth thus creating the cold effect. Which is pretty neat.

If you could get enough of those and fill a radiator maybe they would react to the water warmth and could chill the water.
post #27 of 32
Quote:
Originally Posted by keyboard_commando View Post
I always wondered how those cold press bags that they use in sports work. They have some kind of crystals inside that react to warmth thus creating the cold effect. Which is pretty neat.

If you could get enough of those and fill a radiator maybe they would react to the water warmth and could chill the water.
You do realize that only last for a short period of time? It would easier/cheaper/safer to use.... ice.
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post #28 of 32
Quote:
Originally Posted by keyboard_commando View Post
I always wondered how those cold press bags that they use in sports work. They have some kind of crystals inside that react to warmth thus creating the cold effect. Which is pretty neat.

If you could get enough of those and fill a radiator maybe they would react to the water warmth and could chill the water.
The crystals are salts, and for most salts when they are mixed with water react in an endothermic process- the reaction pulls heat from its surroundings to dissolve the salt. The press bags just contain a package of some specially selected salt surrounded by water or similar solvent. When you pop the package, the salts dissolve in the solvent and suck heat from its surroundings, causing the solvent to freeze.

It would be rather useless to do this in a water cooling loop, as you would quickly saturate the water with salt, and the water would heat up soon again. You would only be able to repeat the cooling effect once you had removed all the salt from your system, probably by replacing the coolant.
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post #29 of 32
It has just occurred to me WHY I think D2O is expensive. I used it at the start of the year to see if I have a hydroxyl group on my unknown compound. I must have asked how much it costs I guess. lol.
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post #30 of 32
the specific heat for D2O is higher, and when I mean it's higher it's about 1.8% higher which means about nothing for you. So yes it'll probably cool a tiny bit better, but it'll be practically immeasurable
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