An innovative atmospheric moisture harvesting system is proposed, where water vapor is separated from the air prior to cooling and condensation. The system was studied using a model that simulates its three interconnected cycles (air, desiccant, and water) over a range of ambient conditions, and optimal configurations are reported for different operation conditions. Model results were compared to specifications of commercial atmospheric moisture harvesting systems and found to represent saving of 5–65% of the electrical energy requirements due to the vapor separation process. We show that the liquid desiccant separation stage that is integrated into atmospheric moisture harvesting systems can work under a wide range of environmental conditions using low grade or solar heating as a supplementary energy source, and that the performance of the combined system is superior.

Technion (Israël) : jusqu’à 65% d’énergie en moins pour capter l’eau de l’atmosphère

Les scientifiques du Technion (Haïfa, Israël) ont mis au point un système innovant pour récolter de l’eau potable à partir de l’air. Capter l’humidité...

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Israël Science Info