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

Abstract

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.

Keywords

atmospheric water harvesting;waste heat recovery;multi-cycle;sorption kinetics;water productivity;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 536:502.21:523.9
COBISS: 215749891 Link will open in a new window
ISSN: 0306-2619
Views: 146
Downloads: 36
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Other data

Secondary language: Slovenian
Secondary keywords: atmosfersko pridobivanje vode;kompozitna sorpcijska sredstva;sončna energija;vakuumski sprejemnik sončne energije;odpadna toplota;napredni toplotni management;prenos toplote;
Type (COBISS): Article
Pages: str. 1-8
Issue: ǂVol. ǂ375, [art. no.] 124090
Chronology: 2024
DOI: 10.1016/j.apenergy.2024.124090
ID: 25403626