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Vapor-collection technology saves water while clearing the air

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Re: Vapor-collection technology saves water while clearing the air

#11
post #8

> ...vapor collection could be made much more efficient by first zapping the tiny droplets of water with a beam of electrically charged particles, or ions, to give each droplet a slight electric charge. Then, the stream of droplets passes through a wire mesh, like a window screen, that has an opposite electrical charge. This causes the droplets to be strongly attracted to the mesh Woah, this seems really simple and p…

That's how cars are painted :)

[1] https://en.wikipedia.org/wiki/Electrostatic_coating

Re: Vapor-collection technology saves water while clearing the air

#12
post #7

Earlier quoted context omitted.

What hot regions use evap systems in data centers? Seems the humidity wouldn’t be worth it and once you dehumidify you might as well use an a/c in the first place.

Does a compressor use more energy than a dehumidifier? Seems like there might still be some savings by avoiding the compressor

I thought dehumidifiers contain compressors.

Re: Vapor-collection technology saves water while clearing the air

#13

Earlier quoted context omitted.

Does a compressor use more energy than a dehumidifier? Seems like there might still be some savings by avoiding the compressor

I thought dehumidifiers contain compressors.

There you go then! In my head, I was envisioning a humidifier, so I guess that's not going to work at all.

Re: Vapor-collection technology saves water while clearing the air

#14
post #8

> ...vapor collection could be made much more efficient by first zapping the tiny droplets of water with a beam of electrically charged particles, or ions, to give each droplet a slight electric charge. Then, the stream of droplets passes through a wire mesh, like a window screen, that has an opposite electrical charge. This causes the droplets to be strongly attracted to the mesh Woah, this seems really simple and p…

Would having two meshes of opposite charge work?

Re: Vapor-collection technology saves water while clearing the air

#15
post #2

This seems like a roundabout way to achieve a closed-loop cooling cycle. Why do this vs a water-to-air heat exchanger and never evaporate the water in the first place?

The process of evaporation of water takes a massive amount of energy, which is exactly what's needed if you're trying to get rid of heat from a data center or industrial processes.

To do the same with a heat exchanger would need a much much bigger heat exchanger, and some of these evaporation systems are already pretty big.

Re: Vapor-collection technology saves water while clearing the air

#16
post #8

> ...vapor collection could be made much more efficient by first zapping the tiny droplets of water with a beam of electrically charged particles, or ions, to give each droplet a slight electric charge. Then, the stream of droplets passes through a wire mesh, like a window screen, that has an opposite electrical charge. This causes the droplets to be strongly attracted to the mesh Woah, this seems really simple and p…

So the summary is that some evaporation systems waste water by letting condensed water droplets escape rather than water vapor. Those water droplets aren't carrying away much heat like the vapor is, so are effectively just wasted water. This system recaptures those water droplets.

Re: Vapor-collection technology saves water while clearing the air

#17
post #2

This seems like a roundabout way to achieve a closed-loop cooling cycle. Why do this vs a water-to-air heat exchanger and never evaporate the water in the first place?

Actually steam and fog are different things. Fog is already condensed steam that consists of small water droplets. This technology captures the condensed water droplets and at this point no no extra latent energy from steam is released.
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