title: Liquid-Desiccant Vapor Separation Reduces the Energy Requirements of Atmospheric Moisture Harvesting.
abstract: 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.
authors.affiliation: Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology , Haifa 32000, Israel.
authors.forename: Ben
authors.initials: B
authors.lastname: Gido
authors.affiliation: Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology , Haifa 32000, Israel.
authors.forename: Eran
authors.initials: E
authors.lastname: Friedler
authors.affiliation: Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology , Haifa 32000, Israel.
authors.forename: David M
authors.initials: DM
authors.lastname: Broday
mesh_terms: D005740:Gases; D058427:Hygroscopic Agents; D008962:Models, Theoretical; D013227:Steam; D014867:Water
chemical_list: D005740:Gases; D058427:Hygroscopic Agents; D013227:Steam; D014867:Water