Journal
JOURNAL OF HYDROLOGY
Volume 599, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhydrol.2021.126263
Keywords
Water harvesting; Hydrogel; Dew condensation; Vapor adsorption
Funding
- Spanish AEI [FIS2014-54101-P, FIS2017-83401-P]
- Asociacion de Amigos de la Universidad de Navarra
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Hydrogels, known for their ability to adsorb water vapor and liquid water, have been found to enhance dew condensation compared to regular surfaces due to their enhanced vapor adsorption capabilities. This makes them a promising candidate for harvesting water vapor from the atmosphere with higher efficiency in agriculture.
Hydrogels are known to adsorb a large amount of vapor and liquid water, making them good candidates to enhance the amount of dew condensed from atmosphere. Although water vapor adsorption and liquid invasion in hydrogels have been the object of many studies, water condensation has been only little investigated. We address here the process of dew condensation on hydrogel grains widely used in agriculture (Aquasorb 3005 (TM)). We show that dew condensing on hydrogels is enhanced when compared to a regular bare substrate due to vapor adsorption, which adds to condensation. Hydrogels, which can both capture water by vapor adsorption and condense water vapor with high efficiency, are thus good candidates to harvest water vapor from atmosphere with higher yield than regular bare surfaces.
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