Experimental study on water extraction from atmospheric air using tubular solar still

Elashmawy, Mohamed

doi:10.1016/j.jclepro.2019.119322

Cited by 86 publications

(24 citation statements)

References 45 publications

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“…64 A tubular solar still filled with CaCl 2 was reported to produce water at a yield of 0.47 L m −2 in extreme climate conditions at 25-35% relative humidity. 75 Metal-organic framework MIL-101ĲCr) encapsulating LiCl has been successfully demonstrated in a water harvesting device. 76 A large specific water yield was reached with LiCl encapsulated in hollow carbon spheres.…”

Section: Passive Desiccant Technologiesmentioning

confidence: 99%

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Energy performance and climate dependency of technologies for fresh water production from atmospheric water vapour

Peeters

Vanderschaeghe

Rongé

et al. 2020

Environ. Sci.: Water Res. Technol.

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Section: Passive Desiccant Technologiesmentioning

confidence: 99%

“…14,25,64,73,74 Heating of the condenser surface by sunlight, heat losses to the surroundings and an excess of available solar energy relative to adsorbed water quantity can lead to drops in energy efficiency. 75,77,80 Thermo-responsive polymers. Thermo-responsive polymers are a particular category of desiccants.…”

Section: Passive Desiccant Technologiesmentioning

confidence: 99%

Energy performance and climate dependency of technologies for fresh water production from atmospheric water vapour

Peeters

Vanderschaeghe

Rongé

et al. 2020

Environ. Sci.: Water Res. Technol.

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“…In desorption process, the sorbent bed is heated sufficiently by the hot air form solar collector and a lot of water vapour is released from the bed [16,17]. Then the air with high relative humidity flows into the condenser and the water vapor there condenses into liquid water, which is collected at the bottom of the condenser by gravity.…”

Section: Sorption Bed and Condensermentioning

confidence: 99%

“…This necessitates the continuous development and improvement of all existing desalination methods and the evaluation of new technologies. The problem of supplying arid regions with fresh water can be solved in the following ways [1]; Transferring water from other sites, desalinating saline water and extracting water from air air [2], [3], [4]. However, transporting water to these areas is usually very costly, and desalination depends on the presence of saline water resources, which are usually scarce in dry areas [5].…”

Section: Introductionmentioning

confidence: 99%

Water from Air Production System based on Solar Energy in Egypt

Farghally

Ahmed

Nafeh

et al. 2020

International Journal of Mechanics

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Fresh water supplies are among the most limiting conditions in arid regions. Drinking water shortage is chronic, acute and widespread in North Africa, the Middle East and South Asia. The extraction of fresh water from the atmosphere has been adopted and developed as a new technology to provide water in remote areas. This paper concentrates on the extracting of potable water from air in remote areas using solar energy. A theoretical study for extracting water from atmospheric air is presented and performance of water production system based on standalone PV system was simulated and evaluated for two sites in Egypt; namely, Hurghada and Khargha Oasis. The unit extracts water by using solar thermal energy as the heating source for air and solar photovoltaic energy for supplying water production system driven fan. Perturb and observe (P&O) method for maximum power point tracking (MPPT) has been designed and simulated for the proposed PV system. A Mathematical and simulation models using MATLAB/ SIMULINK software have been developed for evaluating the performance of the proposed system. The effect of climate conditions; ambient temperature and solar radiation on the PV system output power based on P&O controller was also demonstrated. It was found that more amount of water from atmosphere can be extracted from densely humid and highly solar radiation regions.

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“…Efficient desiccants have been proposed, like metal-organic framework MIL-101 with LiCl, MOF-801, MOF-303, and alginate gel with CaCl 2 ( Xu et al., 2020 ; Kallenberger and Fröba, 2018 ; Kim et al., 2017 ; Hanikel et al., 2019 ). Some desiccants have a large water vapor adsorption capacity even at very low relative humidity and high ambient temperatures typical of arid regions ( Xu et al., 2020 ; Kallenberger and Fröba, 2018 ; Kim et al., 2017 ; Hanikel et al., 2019 ; Elashmawy, 2020 ). The recovery of water from such desiccants is achieved by heating, causing evaporative desorption.…”

Section: Introductionmentioning

confidence: 99%

Fresh water production from atmospheric air: Technology and innovation outlook

et al. 2021

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Summary Capturing water vapor from atmospheric air is a possible solution to local water scarcity, but it is very energy demanding. Energy consumption estimates of water-from-air technologies involving adsorption processes, thermo-responsive hydrophilicity switching polymers, air cooling processes, and reverse osmosis of deliquescent salt solutions reveal that these technologies are not competitive when compared with seawater desalination, and the use of fresh water and wastewater sources. They only become a viable option in the absence of local liquid water sources and when long-distance transport for socio-economic reasons is not an option. Of interest, direct solar-driven technology for water-from-air production is an attractive means to disentangle the local water-energy nexus. It is expected that climate change will accelerate the introduction of water-from-air technologies in local water supply schemes. The optimal water-from-air technology depends on the climate, relative humidity, and temperature profiles. A world map is presented, indicating the optimal geographic location for each technology.

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Experimental study on water extraction from atmospheric air using tubular solar still

Cited by 86 publications

References 45 publications

Energy performance and climate dependency of technologies for fresh water production from atmospheric water vapour

Energy performance and climate dependency of technologies for fresh water production from atmospheric water vapour

Water from Air Production System based on Solar Energy in Egypt

Fresh water production from atmospheric air: Technology and innovation outlook

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