Waste heat-driven water generator with optimized multi-cycle strategy for high water yield

Deng, Fangfang (author), Poredoš, Primož (author), Yu, Jiaqi (author), Yang, Xinge (author), Chen, Zhihui (author), Wang, Ruzhu (author)

Water scarcity and energy crisis have recently become two severe global problems. Low-grade waste heat, a substantial byproduct of energy consumption, promises to provide safe water by driving sorption-based atmospheric water harvesting (SAWH) device. Herein, a low-grade waste heat-driven atmospheric water generator (LWG) is constructed with rapid kinetics at the system level. Solely in 3 h, the device obtains 1.766 g g−1 of water productivity and up to 98 % of water recovery ratio driven by 120 °C of waste heat. Further, an optimized multi-cycle operation strategy is proposed to guide LWG's daily water harvesting, enabling it to predictably obtain over 15 kg m−2 day−1 water productivity by maximizing systemic sorption and desorption-condensation rates. The strategy not only is widely suitable for all SAWH devices, but also provides a universal optimization guideline for sorption-based dehumidification, thermal storage, and electric thermal management.

• Language: English
• Keywords: atmospheric water harvesting, waste heat recovery, multi-cycle, sorption kinetics, water productivity
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 8 str.
• Numbering: Vol. 375, [art. no.] 124090
• PID: 20.500.12556/RUL-165003
• UDC: 536:502.21:523.9
• ISSN on article: 0306-2619
• DOI: 10.1016/j.apenergy.2024.124090
• COBISS.SI-ID: 215749891
• Publication date in RUL: 20.11.2024

Record is a part of a journal

• Title: Applied energy
• Shortened title: Appl. energy
• Publisher: Applied Science Publishers
• ISSN: 0306-2619
• COBISS.SI-ID: 5134599

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: atmosfersko pridobivanje vode, kompozitna sorpcijska sredstva, sončna energija, vakuumski sprejemnik sončne energije, odpadna toplota, napredni toplotni management, prenos toplote

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: Foundation for Innovative Research Groups of the National Natural Science Foundation of China
• Project number: 51521004