Multi-stage adsorption-based atmospheric water harvesting

Atmospheric water harvesting (AWH) is the capture and collection of water that is present in the air either as vapor or small water droplets. Adsorption-based AWH uses adsorbent materials to collect water vapor from the air, the advantage being that the adsorbents can be regenerated by low-grade thermal sources, and condensation can occur at ambient temperatures. It has the potential to be more widely applicable to areas which are facing water scarcity because it can operate in areas with consistently low relative humidity (RH), where traditional approaches such as dewing and fog harvesting aren't feasible. Previous work in this area has demonstrated AWH driven by direct solar heating in low RH conditions (10 - 40%). However, water harvesting productivity, LMD (liters of water harvested per square meter solar receiver area per day), of these devices is limited by vapor transport in packed adsorbent layers, which severely limits adsorbent layer thickness.

Name thesis:degree_name

Master

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Mechanical Engineering

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2019

Author dc:creator

• LaPotin, Alina Dale.

Advisor dc:contributor.advisor

• Evelyn N. Wang.

• Mechanical Engineering.

Statement dc:rights

• MIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/128337

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/128337