A Roadmap to Sorption-Based Atmospheric Water Harvesting: From Molecular Sorption Mechanism to Sorbent Design and System Optimization

2021 ◽  
Author(s):  
Kaijie Yang ◽  
Tingting Pan ◽  
Qiong Lei ◽  
Xinglong Dong ◽  
Qingpeng Cheng ◽  
...  
Keyword(s):  
System Optimization ◽  
Water Harvesting ◽  
Sorption Mechanism ◽  
Atmospheric Water ◽  
Molecular Sorption

INTERFACES BETWEEN ATMOSPHERIC WATER HARVESTING AND SOLAR ENERGY: EVIDENCES FROM A BIBLIOMETRIC STUDY

2021 ◽  
Author(s):  
Ana Carolina Lamas da Silva ◽  
Elias Rocha Gonçalves Junior ◽  
Virgínia Siqueira Gonçalves
Keyword(s):  
Solar Energy ◽  
Bibliometric Study ◽  
Water Harvesting ◽  
Atmospheric Water

scholarly journals Exploiting radiative cooling for uninterrupted 24-hour water harvesting from the atmosphere

2021 ◽  
Vol 7 (26) ◽  
pp. eabf3978
Author(s):  
Iwan Haechler ◽  
Hyunchul Park ◽  
Gabriel Schnoering ◽  
Tobias Gulich ◽  
Mathieu Rohner ◽  
...  
Keyword(s):  
Radiative Heat ◽  
Outer Space ◽  
Continuous Production ◽  
Solar Irradiation ◽  
Cooling Power ◽  
Water Harvesting ◽  
Atmospheric Water ◽  
Promising Alternative ◽  
Mass Fluxes ◽  
Power Enhancement

Atmospheric water vapor is ubiquitous and represents a promising alternative to address global clean water scarcity. Sustainably harvesting this resource requires energy neutrality, continuous production, and facility of use. However, fully passive and uninterrupted 24-hour atmospheric water harvesting remains a challenge. Here, we demonstrate a rationally designed system that synergistically combines radiative shielding and cooling—dissipating the latent heat of condensation radiatively to outer space—with a fully passive superhydrophobic condensate harvester, working with a coalescence-induced water removal mechanism. A rationally designed shield, accounting for the atmospheric radiative heat, facilitates daytime atmospheric water harvesting under solar irradiation at realistic levels of relative humidity. The remarkable cooling power enhancement enables dew mass fluxes up to 50 g m−2 hour−1, close to the ultimate capabilities of such systems. Our results demonstrate that the yield of related technologies can be at least doubled, while cooling and collection remain passive, thereby substantially advancing the state of the art.

scholarly journals Super Moisture-Absorbent Gels for All-Weather Atmospheric Water Harvesting

2019 ◽  
Vol 31 (10) ◽  
pp. 1806446 ◽  
Author(s):  
Fei Zhao ◽  
Xingyi Zhou ◽  
Yi Liu ◽  
Ye Shi ◽  
Yafei Dai ◽  
...  
Keyword(s):  
Water Harvesting ◽  
Atmospheric Water ◽  
Moisture Absorbent

A Techno-Economic Analysis of Solar-Driven Atmospheric Water Harvesting

2020 ◽  
pp. 1-35
Author(s):  
Nathan Siegel ◽  
Ben Conser
Keyword(s):  
State Of The Art ◽  
System Level ◽  
Water Model ◽  
Water Harvesting ◽  
Atmospheric Conditions ◽  
Atmospheric Water ◽  
Atmospheric Humidity ◽  
Energy Flows ◽  
Solar Electricity ◽  
Latent Heat Of Vaporization

Abstract Water may be produced from atmospheric humidity anywhere on Earth; however, current approaches are energy intensive and costly, thus limiting the deployment of atmospheric water harvesting (AWH) technologies. A system level thermodynamic model of several AWH pathways is presented to elucidate the important energy flows in these processes as a means to reducing the energy required to produce a unit of water. Model results show that fresh water may be produced from humid air via processes driven solely with solar electricity in an arid climate with an energy input between 116 kWhe/m3 and 1021 kWhe/m3, depending on atmospheric conditions and processing configuration. We describe a novel, desiccant-based AWH approach in which the latent heat of vaporization is internally recovered resulting in a significant reduction in energy requirements relative to the state of the art. Finally, a parametric model of a desiccant-based AWH system is used to estimate the minimum levelized cost of water (LCOW) via solar-driven AWH at 6.5 $/m3 when both latent and sensible energy are recovered internally.

Solar-assisted Smart Nanofibrous Membranes for Atmospheric Water Harvesting

2021 ◽  
pp. 131601
Author(s):  
Soyoung Kim ◽  
Yejin Liang ◽  
Seoktae Kang ◽  
Heechul Choi
Keyword(s):  
Water Harvesting ◽  
Atmospheric Water ◽  
Nanofibrous Membranes
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