Solar Atmospheric Water Harvester Based on Film Coated Encapsulation and Pressure Molded MOF Materials
The global water crisis has significantly boosted the research on water acquisition meth-ods.Solar adsorption-based atmospheric water harvesting is gradually becoming a research hotspot in the field of water research due to its advantages such as no external electrical input needed and wide adaptability to a variety of off-grid scenarios.In this paper,we report a compact solar atmo-spheric water harvester with a laminated MOF,starting from the analysis of the basic principle of solar adsorption air intake.The device uses film encapsulation combined with powder material pres-sure molding process to overcome the disadvantages of poor thermal conductivity and low density of traditional powder material,while the device can still maintain a maximum temperature difference of 45° C under the total height of 5 cm compact thermal design structure,which guarantees the air water extraction process.During the test,the unit mass adsorption capacity of the material reached 0.56 g/g under arid conditions,which translates into 312 g of water production per square meter of solar thermal panel,and is expected to provide a new water access for arid off-grid scenarios represented by deserts.
adsorption-based atmospheric water harvestingMOFsolar energy utilization
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