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post #11 of 15
Quote:
Originally Posted by Rognin View Post
Hrmmm... so you do need addatives.
Technically, maybe you should. However, I haven't heard of anybody here running into trouble with distilled water + biocide/silver. You should not have aluminum in your loop anyway.
post #12 of 15
That is probably very old advice from when people used aluminium in their loops. If you have mixed metals (copper + aluminium) then you will need a anti-corrosion additive. If you are using just copper (almost all parts now are copper) then you will be absolutely fine without.

Also if you quote the url of your source too, it gives people a chance to look at the article in context.

EDIT: I found the article you quoted and it is form 2004.
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post #13 of 15
Thread Starter 
Quote:
Originally Posted by Stevinchy View Post
That is probably very old advice from when people used aluminium in their loops. If you have mixed metals (copper + aluminium) then you will need a anti-corrosion additive. If you are using just copper (almost all parts now are copper) then you will be absolutely fine without.

Also if you quote the url of your source too, it gives people a chance to look at the article in context.

EDIT: I found the article you quoted and it is form 2004.

The anti-corrosive might not be good to have anymore, but a surfactant additive might to increase the water thermal efficiency. no?

Edit So a surfactant with Milli-Q and a silver coil may still be a very good choice right?
Edited by Rognin - 4/22/11 at 11:20am
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post #14 of 15
Quote:
Originally Posted by Rognin View Post
The anti-corrosive might not be good to have anymore, but a surfactant additive might to increase the water thermal efficiency. no?
Not really. Have a read of this thread, spicifically look at these results:



And this picture:



From that, I think it shows that distilled and a biocide are the way forward.

Edit: You can get distilled water from the grocery store for $2-4 / gallon anyway, so not only is it better it is also cheaper.
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post #15 of 15
If you are concerned about surficants and thermal efficiency, I have heard of people adding a drop of dawn dish soap into their loop, but it's usually just to clear out bubbles if I remember correctly, although it is a surficant, so it should suffice that function, as well as inhibit bacterial growth since it's an anti-bacterial soap.
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