Science Forums 2

[Michaelangelica]

Air water harvesters Could have an important role reducing the greenhouse gas H2O too.
We could kill two birds with the one stone.

Earth getting steamier and steamier

Michael Kahn
Reuters
Thursday, 11 October 2007

raindrops
Warmer air holds more water vapour, a greenhouse that stokes the warming effect and so worsens humidity (Image: iStockphoto)
Greenhouse gases are making the earth's atmosphere wetter and stickier, which may lead to more powerful hurricanes, hotter temperatures and heavier rainfall in tropical regions, UK researchers report.

The findings, published today in the journal Nature, are some of the first to suggest how human-produced greenhouse gases have affected global humidity levels in recent decades.

The results could also offer clues on future climate change, the researchers say.

News in Science - Earth getting steamier and steamier - 11/10/2007

Could this technology be combined with air conditioning for domestic use?

the Air Water Pty Ltd's Air Water Machines also harvest water from air by using a condensation method. An example of the principle is the water you see on the ground under your car's air-conditioner, or the water in the bottom of your fridge: water from air!

These machines "pull air over a condenser, chill it and harvest the resulting water." Simple! Why did I not think of that!

This company's "Lifesaver" machine is the world’s first unique PV Solar Powered system that stands alone, in any place, 24/7, while producing huge amounts of water. The Lifesaver can provide water and power independence practically anywhere.

It produces 500 litres of water in 24 hours. It needs input power of 8.8KW and consumes 0.4kwH per litre of water produced.

See it in action here but make sure you enable your Firefox browser to play it, or use Internet Explorer.

It sells many different types of water from air harvesters,ranging from domestic use to that of a village!

The "Villager" produces 1000 litres per day (264 gallons) and the "Irrigator" an impressive 5000 litres (1321 gallons). At an estimated AUS 3c cents per litre this is still costly if using a diesel generator. But with wind or solar...

Water From Air - Using Salt
also more at
Conjuring Water From The Air | Robin Bloor

PS
from India

For more information on GE Water & Process Technologies, visit Water & Process Technologies: Water, wastewater and process systems solutions.

GE to Supply ecomagination Products for Dynoil's Alternative Energy Initiative
I wonder what a unit would cost?

More info here. very interesting

Electrodialysis Reversal (EDR)

Electrodialysis Reversal (EDR) is an electrochemical separation process that removes ions and other charged species from water and other fluids.

EDR uses small quantities of electricity to transport these species through membranes composed of ion exchange material to create a separate purified and concentrated stream.

Electrodialysis Reversal (EDR)