Thermodynamic limits of atmospheric water harvesting with temperature-dependent adsorption
Name
5.0118094.pdf
Size
2.09 MB
Format
Adobe PDF
Checksum (MD5)
971d18f747a55e627bdfebb26aea61bf
Author(s)
Li, Adela Chenyang
Zhang, Lenan
Zhong, Yang
Li, Xiangyu
El Fil, Bachir
Fulvio, Pasquale F.
Walton, Krista S.
Wang, Evelyn N.
Date Issued
October 17, 2022
Publisher
AIP Publishing
Citation
Li, Adela Chenyang, Zhang, Lenan, Zhong, Yang, Li, Xiangyu, El Fil, Bachir et al. 2022. "Thermodynamic limits of atmospheric water harvesting with temperature-dependent adsorption." 121 (16).
Version
Final published version
Abstract
Adsorption-based atmospheric water harvesting (AWH) has vast potential for addressing global water shortage. Despite innovations in adsorbent materials, fundamental understanding of the physical processes involved in the AWH cycle and how material properties impact the theoretical limits of AWH is lacking. Here, we develop a generalized thermodynamic framework to elucidate the interplay between adsorbent properties and operating conditions for optimal AWH performance. Our analysis considers the temperature dependence of adsorption, which is critical but has largely been overlooked in past work. Using metal-organic framework (MOF) as an example, we show that the peak energy efficiencies of single-stage and dual-stage AWH devices, after considering temperature-dependent adsorption, increased by 30% and 100%, respectively, compared with previous studies. Moreover, in contrast to common understanding, we show that the adsorption enthalpy of MOFs can also be optimized to further improve the peak energy efficiency by 40%. This work bridges an important knowledge gap between adsorbent materials development and device design, providing insight toward high-performance adsorption-based AWH technologies.
Subjects
Physics and Astronomy (miscellaneous)
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/5.0118094
