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“Liquid-Desiccant Vapor Separation Reduces the Energy Requirements of Atmospheric Moisture Harvesting“
Getting clean water to communities in parched areas of the planet remains an ongoing challenge. Recent developments that harvest water from air have been proposed as a solution. However, the technology to do so consumes a lot of energy. But based on new modeling results, scientists now report in ACS’ journalEnvironmental Science & Technology that a new system design would require less energy and produce high-quality water.
The atmosphere around us contains water vapor in amounts comparable to all the surface and underground liquid freshwater on the planet, according to an International Organization for Dew Utilization study published in 2000. However, current machines that collect water from this airy reservoir have major limitations. For example, one method uses electrical refrigeration to cool the air and condense the vapor, but that consumes 40 to 90 percent of the total system’s energy requirements. Scientists from the Technion (Israel) compared this strategy to their new design that uses a liquid desiccant to first separate the vapor from air and then cool only the vapor. Their calculations show that this approach would result in 20 to 65 percent energy savings over the standard system, depending on where the technology is applied and the sites’ climate conditions.
The Latest on: Atmospheric moisture harvesting
January 28, 2019 - Farmed fish dying, grape harvest weeks early – just some of the effects of last summer's heatwave in NZ The Conversation AUAnalysis of last summer's heatwave shows it killed farmed salmon and decimated kelp forests, as well as shifting grape harvests and fish spawning times forward ...
Can stripping the air of its moisture quench the world's thirst? - Chemical & Engineering News
October 14, 2018 - Can stripping the air of its moisture quench the world's thirst? Chemical & Engineering NewsHalf a billion people don't have enough water to meet their daily needs. And more than half the world's population struggles with water scarcity for at least a ...Lighting the way to harvest water from air - Phys.Org
July 23, 2018 - Lighting the way to harvest water from air Phys.OrgA low-cost method for collecting water from the atmosphere could be used to provide potable water to dry, inland regions.
Experts: Southwestern US Sees Some Drought Relief - Arizona Public Media
February 15, 2019 - Experts: Southwestern US Sees Some Drought Relief Arizona Public MediaALBUQUERQUE, N.M. — Drought conditions in much of the southwestern United States have improved because of surges of moisture over the last few months.Drinking water sucked from the dusty desert air - Phys.Org
November 26, 2018 - Drinking water sucked from the dusty desert air Phys.OrgAn inexpensive hydrogel-based material efficiently captures moisture even from low-humidity air and then releases it on demand.
Benefits of pulses: Good for you and the planet - The Conversation - Canada
February 7, 2019 - Benefits of pulses: Good for you and the planet The Conversation - CanadaToday's production of more, better food from the same amount land means that tomorrow's population may not go hungry.
We're closer than ever before to producing clean water from thin air - INSIDER
June 13, 2018 - We're closer than ever before to producing clean water from thin air INSIDERScientists from the University of California, Berkeley have developed a device that can harvest *fresh* water from dry desert air using only sunlight. While it's just a ...
July 11, 2018 - Harnessing natural gas to harvest water from the air might solve 2 big problems at once The Conversation - USEnergy that otherwise would go to waste might someday power industrial-scale condensation.
Practical water production from desert air - Science Advances
June 8, 2018 - Practical water production from desert air Science AdvancesEnergy-efficient production of water from desert air has not been developed. A proof-of-concept device for harvesting water at low relative humidity was reported; ...Atmospheric water harvester takes out $1.5m XPrize - New Atlas
October 20, 2018 - Atmospheric water harvester takes out $1.5m XPrize New AtlasTwo years ago, XPrize extended its list of pioneering technology competitions with a new contest aimed at the problem of global water security. After revealing ...
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The Latest on: Atmospheric moisture harvesting
- Monash Plants Seeds To Improve Farming Practices on February 21, 2019 at 10:27 pm
Monash University engineers are working with Australian farmers to help them improve irrigation practices, reduce water use and maximise crop harvest by using autonomous ... and thus the energy fluxes ... […]
- NASA boffins show Moon water supply could – er, this can't be right? – come from the Sun on February 20, 2019 at 11:30 pm
Scientists have managed to simulate a chemical process that produces water on Earth’s satellite ... surface and throughout its exosphere, or very thin atmosphere, so we can know where to go to harvest ... […]
- Expert: Southwestern U.S. sees some drought relief on February 19, 2019 at 11:09 am
But national forecasters and climate experts warned Feb. 14 that it hasn’t been enough to alleviate concerns about long-term water supplies around the region. Officials with the National Oceanic and A... […]
- A Green New Deal would also provide huge opportunities to America’s farmers on February 19, 2019 at 4:11 am
Tractors and trucks that harvest and transport our food burn gasoline ... thereby releasing carbon stored in trees into the atmosphere and reducing the capacity of the land to store CO2. […]
- Comprehensive Strategic Partnership Agreement Signed between Heaven Springs Dynasty Harvest and Ping An International Smart City Technology on February 12, 2019 at 11:27 pm
Heaven Springs Dynasty Harvest operates sustainable real estate projects focusing on "green, smart and sustainable" that uses its renewable energy and atmospheric water generation solutions to ... […]
- In Search Of A Solution For Water Scarcity In The Caribbean on February 12, 2019 at 4:41 pm
Harding, in his post as the first CEO of the Caribbean Climate Smart Accelerator, facilitated the implementation of a water harvesting technology that ... that are pumped back into the ocean. Atmosphe... […]
- Atmospheric Water Generation of Heaven Springs Dynasty Harvest Shined Again at Green Industrial Policy Trilogy Presentation on March 4, 2018 at 10:28 am
HONG KONG, March 4, 2018 /PRNewswire/ -- On Feb 22, Green Industrial Policy Trilogy Presentation was held by the UN Environment and Partnership for Action on Green Economy (PAGE) of the UN in Geneva, ... […]
- The First Atmospheric Water Generation Company takes part in Forum on the Environment on December 13, 2017 at 9:06 am
As a world's pioneer and leader on atmospheric water generation, Heaven Springs Dynasty Harvest Group holds more than 80 international patents under the WIPO PCT system of 152 countries and regions. I... […]
- Vapor harvesting gets the edge on August 14, 2017 at 5:59 am
Water harvesting is an age-old technique of collecting atmospheric water vapor. Researchers are looking to nature to learn about the efficiency of surfaces used to collect the vapor. Scientists have l... […]
- Surface wettability has little effect on atmospheric water gathering, but edge structure is crucial on August 14, 2017 at 5:05 am
Water harvesting is an age-old technique of collecting atmospheric water vapor. Researchers are looking to nature to learn about the efficiency of surfaces used to collect the vapor. Scientists have l... […]
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