|Researchers at Purdue University have developed a method for ambient water harvesting (AWH) that works across a wide range of environmental conditions while requiring zero active energy input. By leveraging multiple mechanisms of atmospheric water harvesting, Purdue's approach can harvest water at relative humidities (RH) between 8% to 90%. This mitigates drawbacks previously associated with AWH systems that only worked within specific condition ranges and produced limited yields. Applications of this technology include ambient water harvesting in areas where freshwater is not readily available. This technology also offers a method to combat water scarcity in regions where other water harvesting approaches (desalination, solar steam generation) are not viable.
- No required active energy input
- Tested operating range of 8% to 90% RH
- Capable of harvesting 6.75 L/kg/day
- Ambient water harvesting
- Addressing water scarcity
This technology has been validated through testing of a prototype system at humidity ranges from <8% to 90% RH with demonstrated yields of up to 6.75 L/kg/day.
Y. Zhang, et al, T. Li, "Atmospheric Water Harvesting via Radiative Cooling Fabric", Nano Letters, 22.7, 2618-2626. 2022
W. Zhu, et al, T. Li, "Radiative Cooled Sorbent for High Performance All Weather Ambient Water Harvesting", under revision, DOI: https://doi.org/10.21203/rs.3.rs-1394191/v1
Dec 13, 2022
Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906
Phone: (765) 588-3475
Fax: (765) 463-3486