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post #31 of 43
Not really. It's not that tap water has bacteria in it, it's easy to remove that. It's that it has minerals and elements in it.

All distilled water is (as you know) is water that has been evaporated and the vapour condensed and collected. It might be cheaper for you to work out a way to do that rather than buy it.
post #32 of 43
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Quote:
Originally Posted by Boyboyd View Post
Not really. It's not that tap water has bacteria in it, it's easy to remove that. It's that it has minerals and elements in it.

All distilled water is (as you know) is water that has been evaporated and the vapour condensed and collected. It might be cheaper for you to work out a way to do that rather than buy it.
loool maybe by spending £700 in power for the dehumidifier to generate 70Ltrs of water? lool
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post #33 of 43
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What about this?


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post #34 of 43
Boil kettle through a tube, cool the mid-part of that tube under the cold tap, collect the distilled water out of the other end of the tube.

Edit: You could do that if your copper had enough coils.
post #35 of 43
Copper is not cheap...fyi.
    
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post #36 of 43
There is no heat exchange. You have to have heat exchange somewhere, otherwise the heat dissipates naturally though the materials of the tubing and tank (plastic). Plistic is not a good thermal conductor, in fact, its an insulator.

I do not think this will work. A radiator exchanges the heat to air through a much better thermal conductor, like copper, nickle, other metals whathaveyou. You have no real way of getting rid of heat. Regardless of volume, no amount of water is going to cool itself by merely circulating through plastic tubes and a reservoir.
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post #37 of 43
Quote:
Originally Posted by Charlton22 View Post
What about this?

You still don't have a true heat exchange there. You have a copper coil (better than nothing), that exchanges heat with the water in the reservoir? Eventually, things will overheat without exchanging that heat to air. Water is a good conductor of heat, and will hold its heat well.

Think about a cup of hot tea in a plastic travel mug. That is in effect what you have. Mediums such as plastic insulate, and air is a poor thermal conductor, which is why we use metal radiators with fans that move massive amounts of air to make that thermal transfer and keep things cool.

The only way that would work without a radiator and fan is if you divided the water tank into two compartments, had one constantly draining the hot water and the other (connected to pump) constantly feeding cold water.
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post #38 of 43
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Quote:
Originally Posted by Techprimus View Post
You still don't have a true heat exchange there. You have a copper coil (better than nothing), that exchanges heat with the water in the reservoir? Eventually, things will overheat without exchanging that heat to air. Water is a good conductor of heat, and will hold its heat well.

Think about a cup of hot tea in a plastic travel mug. That is in effect what you have. Mediums such as plastic insulate, and air is a poor thermal conductor, which is why we use metal radiators with fans that move massive amounts of air to make that thermal transfer and keep things cool.

The only way that would work without a radiator and fan is if you divided the water tank into two compartments, had one constantly draining the hot water and the other (connected to pump) constantly feeding cold water.
But that would be a waste of water. I have 2 water containers of 100L each.
But still, water is too expensive over here....

Btw Purified water is good for closed loop?
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post #39 of 43
You need to have water/some material/then air to cool the loop. You could have water/air by means of an open container. But then water will evaporate and your room will be humid. Metal is great at heat transferring which is why we use radiators. If you attached metal plates that go through the container on both side(you would have to seal this) it could work but it would be inefficient.
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post #40 of 43
Quote:
Originally Posted by Charlton22 View Post
But that would be a waste of water. I have 2 water containers of 100L each.
But still, water is too expensive over here....

Btw Purified water is good for closed loop?
Distilled water. If water is scare I assume you live in a hotter region, set up a closed in solar tent to distill and then filter for dirt/dust.

There has to be a way to cool that water IMO. Because water is a good conductor of heat, it will retain heat very well. Eventually, the system will overheat.

You could try something like cutting a decent sized hole out of the plastic tank, bevel the edges and mount a copper plate using a plastic welder, and mount a DC power chilling plate to the copper.

Now THAT would be interesting!
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