期刊
ATMOSPHERIC RESEARCH
卷 182, 期 -, 页码 156-162出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.atmosres.2016.07.029
关键词
Atmospheric moisture; Humidity harvesting; Ambient vapor condensation; Atmospheric water generators
资金
- Maccabi Carasso Ltd. [2021609]
The enormous amount of water vapor present in the atmosphere may serve as a potential water resource. An index is proposed for assessing the feasibility and energy requirements of atmospheric moisture harvesting by a direct cooling process. A climate-based analysis of different locations reveals the global potential of this process. We demonstrate that the Moisture Harvesting Index (MHI) can be used for assessing the energy requirements of atmospheric moisture harvesting. The efficiency of atmospheric moisture harvesting is highly weather and climate dependent, with the smallest estimated energy requirement found at the tropical regions of the Philippines (0.23 kW/L). Less favorable locations have much higher energy demands for the operation of an atmospheric moisture harvesting device. In such locations, using the MHI to select the optimal operation time periods (during the day and the year) can reduce the specific energy requirements of the process dramatically. Still, using current technology the energy requirement of atmospheric moisture harvesting by a direct air cooling process is significantly higher than of desalination by reverse osmosis. (C) 2016 Elsevier B.V. All rights reserved.
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