Nighttime Atmospheric Water Harvesting Enabled by Solar Prestorage Using a Phase‐Change Thermal Storage System

IF 19 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-10-09 DOI:10.1002/adfm.202516624

Weicheng Chen, Yangxi Liu, Mingyun Luo, Yuxuan Tan, Jinze Yao, Bingzhi Chen, Zhixuan Chen, Muthusankar Ganesan, Xiaolong Zhao, Ci Lin, Tingting Qin, Yutang Fang, Shuangfeng Wang, Wanwan Fu, Bingqiong Tan, Ting Zou, Yanshu Luo, Sai Kishore Ravi, Dennis Y. C. Leung

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引用次数: 0

Abstract

Atmospheric water harvesting (AWH) offers a promising solution for achieving household water independence in arid regions. However, its efficiency is constrained by the reliance on daylight, limiting daily water yields. To address this challenge, a “nighttime AWH” system that operates without external energy input is proposed. The system leverages a thermal battery composed of composite phase‐change materials (CPCMs) with high energy density and photothermal conversion efficiency. During daylight hours, solar energy is stored within the thermal battery, and at night, a sorption layer utilizing MOF‐303 is activated for water production. The integrated system, referred to as the water generation unit (WGU), demonstrates rapid desorption due to efficient heat transfer between components. The adsorption‐saturated MOF‐303 layer releases ≈78% of its adsorbed water within 30 min, resulting in a theoretical nighttime water release as high as 3.8 g(water) g(MOF)−1 day−1. Thermal imaging and heat‐transfer simulations are used to analyze the desorption mechanism and evaluate key operational parameters. This thermal energy storage‐integrated AWH system efficiently converts, stores, and releases solar energy, offering a sustainable and reliable solution for nighttime water harvesting in water‐scarce regions.

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利用相变蓄热系统的太阳能预蓄能实现夜间大气集水

大气集水（AWH）为干旱地区实现家庭用水独立提供了一个有希望的解决方案。然而，它的效率受到对日光的依赖的限制，限制了每天的水量。为了应对这一挑战，设计人员提出了一种无需外部能源输入的“夜间AWH”系统。该系统利用由复合相变材料（CPCMs）组成的热电池，具有高能量密度和光热转换效率。在白天，太阳能被储存在热电池中，在晚上，利用MOF - 303的吸收层被激活用于产水。该集成系统被称为水生成单元（WGU），由于组件之间有效的热传递，可以快速解吸。吸附饱和MOF - 303层在30分钟内释放约78%的吸附水，导致理论夜间水释放高达3.8 g(water) g(MOF)−1 day−1。热成像和传热模拟用于分析解吸机理和评估关键操作参数。这种热能储存集成的AWH系统有效地转换、储存和释放太阳能，为缺水地区的夜间集水提供了可持续和可靠的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.