Electrostatically driven fog collection using space charge injection
Name
eaao5323.full.pdf
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1.05 MB
Format
Adobe PDF
Checksum (MD5)
776022833bc481b9d57e610fcc43eccc
Author(s)
Damak, Maher
Varanasi, Kripa
Date Issued
June 2018
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Damak, Maher, and Kripa K. Varanasi. “Electrostatically Driven Fog Collection Using Space Charge Injection.” Science Advances 4, no. 6 (June 2018): eaao5323.
Version
Final published version
Abstract
Fog collection can be a sustainable solution to water scarcity in many regions around the world. Most proposed collectors are meshes that rely on inertial collision for droplet capture and are inherently limited by aerodynamics. We propose a new approach in which we introduce electrical forces that can overcome aerodynamic drag forces. Using an ion emitter, we introduce a space charge into the fog to impart a net charge to the incoming fog droplets and direct them toward a collector using an imposed electric field. We experimentally measure the collection efficiency on single wires, two-wire systems, and meshes and propose a physical model to quantify it. We identify the regimes of optimal collection and provide insights into designing effective fog harvesting systems.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial 4.0 International
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.aao5323
