Search:

They are very impressive. My cheap TECs were £17.50 for 10 including postage etc. Bit of a bargain but now about double that I think (I was thinking about getting another ten).

Im impressed by those numbers and they all look right to me. The only TECs I can get hold of dont have anywhere near as good properties as that. With a COP of 1.5 and dT of 15-20 my units can only...

My example was for a single TEC handling 20w or so, for example 10 would be needed for 200w.

My chiller has 10 TECs in it, I'd still prefer more. I still think you lose a lot of COP for high dTs....

I think we are talking about different things here. Lets start with a magic system that cools the hotside to a constant 30c regardless of load. To get a COP of 2 you are limited to a dT of around...

In my system aiming for the water to be at ambient or just below (dew point) was for a couple of reasons. Firstly so I don't have to worry about condensations as you say. However the main reason was...

The chiller in the thread was mainly a cheap and easy to build prototype so I could experiment without wasting too much money. The main reason I stopped work on it is simply that I never have time...

Fair enough. I think it will be harder to get equal flow over pins but still possible and even if it isnt as even as the flow in a channeled design I still think its worth it.

I too am still not sure why its square. Assuming it has to be square though and has to have 4 barbs coming in vertically then I still think the current barb layout with pins is likely to be better...

Thanks, that is exactly the package I was thinking of. I didn't realise it did heat transfer etc too. I would love to own and know how to use those packages, as it stands I can only rely on intuition...

I like all the DIY but...

I don't dabble with direct TEC cooling so I don't know what temperatures you would normally get. However I am impressed and surprised you have got such a low temperature....

Very poor surface area. Thin copper that would probably bend under the required pressure. Difficult to get correct pressure sue to distance of mounting holes.

I had considered it in the past...

It's starting to look good.

The avatar is a model of a peltier water chiller I started making. The idea of it was to be cheap and low power and not to cool the water beyond the point where condensation occurs. The design had...

You won't keep the water at room temperature (it's technically impossible with the setup you describe).

The only way the peltier could possibly reduce the CPU temperatures is if the heat...

How will you make sure the water is at room temperature? The net effect of the peltier here it to increase the water temperature at the expense of electricity.

I'd definitely go for pins over straight channels if you can. Though the flow restriction of a pin matrix that size might be quite large, I'm no expert.

In areas such as this, its best not to...

So the same water loop is in contact with both the cold and hot side of the TEC?

I think I see what you are going for here. Are you planning to use two loops?

This seems overcomplicated and inefficient to me. I do like it when people think up something original though.

On Ultrasonics final version he has the two outputs in the middle. Couldn't you have that as just one output as they are next to each other?

Does anybody know the name of a good program for...

I fully agree with ultrasonic with his ideas on coming from the corners and having barbs diagonally.
But if you are just using a Y connector into two barbs then is there any advantage of having two...

Zig zag will increase turbulence which will decrease flow but also increase surface area and prevent laminar flow. I think there is probably a trade-off.

Which very small 'micro channels' like on...

But why put the inlets and outlets over the center of the TECs? You only do this on CPU water blocks because that's where the heat is concentrated. This way you wont get the best flow.

I agree...

Yes, but why would the barbs be located as they are. Sure it looks good but it wont give you the best flow.

Is it two inlets and two outlets? If so, will you be using 1 pump with a splitter or two...

So what the proposed water flow in this? At a glance the barb position seems purely aesthetic.

I have looked at those hard driver water blocks before. The one pictured hasn't got a huge surface area so you wouldn't get good heat transfer. Also the base is quite thin so could bend under the...