Home: Humidity
Water from Air Mug (WAM)   (+10, -3)  [vote for, against]
Handheld device that extracts the humidity from air

Ever had a humid, moulded apartment? I did! And can tell you it isn't pleasant at all. But there is a solution to it: Get a vase, fill it with water, freeze it in fridge, take it out and put it somewhere in the room on a plate. It collects up to one glass of water from the air every day. Really works! But far from enough unfortunately. Anyway, that is not the idea. Here is the idea:

This device is the size of a coffee mug. It has a solar cell on top. It also has a fan, a compact A/C unit, a water barrier membrane, and an insulated water reservoir, oh and rechargeable lithium batteries. The solar cell powers the fan and the A/C unit. The fan blows air into the mug from the inlet, while there is a membrane on the vent hole. The air goes in and out while the humidity is trapped inside. The A/C kicks in and cools a coil inside the mug. The water condenses and drops into the reservoir. In an hour or so there is considerable water in the mug.

Say you go hiking, or you go for a long drive, or god forsake it you are left in a desert without water! I am sure you have experienced the case when you had to appreciate even a drop of water. Well now, you can have this mug with you and get at least a sip of water no matter where. Not going anywhere but want to use it to dehumidify you room? Put it in a corner and let it work for you all day with clean renewable energy. Price? $55 or so.
-- xkuntay, Jan 07 2009

Baked, though at a different price-point. http://www.airoasisltd.com/
[coprocephalous, Jan 07 2009]

What's the exact opposite of baked? http://www.craveonl...m-evidence-suggests
Someone made money off of this very idea! It was a scam, but money is still money. [goldbb, May 15 2017]

Got a humid, moldy apartment? Here, have some tepid, moldy water.

A moldy bun for you.
-- Spacecoyote, Jan 08 2009

I sorta like the idea of a self-filling coffee (or water) mug
-- FlyingToaster, Jan 08 2009

There are quite a few water-from-air extraction systems around. They generally use about 500 Watt-hour per litre, i.e 125 Watt-hour per mug (250ml). That's a lot of energy for a glass of water. You're either going to need big solar panels or a lot of patience.
-- xaviergisz, Jan 08 2009

//moulded apartment//
Injection or vacuum?
-- coprocephalous, Jan 08 2009

From memory of making torches, an AA battery is 2600mWhrs. This means, if [xaviergisz] is correct (and I have no reason to doubt him), 2 batteries give about 10-11ml of water. About half a shot.

Dont drink it all at once.
-- miasere, Jan 08 2009

Don't bother with AAs, just put a big lithium pack in it.
-- Spacecoyote, Jan 08 2009

//put a big lithium pack in it//
But keep the lithium well away from the water...
-- AbsintheWithoutLeave, Jan 08 2009

Lithium AA batteries have about 3000mAhrs. AA batteries in general have the highest energy density of all batteries as they are the most common and therefore the most marketable.

Admittedly, you dont really need a lot of space for the water as there wont be much of it.
-- miasere, Jan 09 2009

Or you could add the feature onto the functionality of the air conditioner. Now your air conditioner is also a dandy water cooler, no batteries required.
-- Spacecoyote, Jan 09 2009

Although if you have air conditioning you probably have that most modern of devices, a tap.
-- miasere, Jan 09 2009

Although, if you have a tap, the water that comes out of it is probably disgusting.
-- Spacecoyote, Jan 09 2009

Have you looked at the water that comes out of an air conditioner?!?
-- MechE, Jan 09 2009

No, but I it is easier to filter air than water (because air is less dense), in this case filtering the air filters the water by proxy. Many aircons already have this ability.
-- Spacecoyote, Jan 09 2009

WaterSeer too
-- notexactly, May 17 2017

Shirley the key here is to wait for the most advantageous conditions? Take a solar system, + storage, monitor the temp + humidity until it comes as close to the dew point as possible then dump all your energy into your cooling system then.

The downside of course, is that all your lovely water that you've just extracted from the air might get washed away by the rain that, purely by coincidence, is falling.
-- bs0u0155, May 17 2017

random, halfbakery