All-day freshwater production enabled by an active continuous sorption-based atmospheric water harvesting system

被引：26

作者：

Wang, Wenwen ^{[1
]}

Yang, Tianyu ^{[1
]}

Pan, Quanwen ^{[2
]}

Dai, Yanjun ^{[1
]}

Wang, Ruzhu ^{[1
]}

Ge, Tianshu ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China

[2] Zhejiang Univ City Coll, Cryogen Ctr, Hangzhou 310015, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2022年 / 264卷

基金：

中国国家自然科学基金;

关键词：

Continuous sorption-based atmospheric water harvesting (AC-SAWH); Composite adsorbent; Large-scale water harvester; All-day water production; Two sorbent beds; SURFACE-WATER; GROUNDWATER; SORBENTS;

D O I：

10.1016/j.enconman.2022.115745

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Recent researches have demonstrated sorption-based atmospheric water harvesting (SAWH) as a sustainable, energy-efficient, and low-cost strategy to alleviate the water crisis. But the low daily water productivity of devices (L/kg day(-1)) remains a bottleneck to achieve efficient water production as they are merely allowed for intermittent operation. This limitation makes it rather challenging to deploy discontinuous SAWH systems for practical water production at large scales. Herein, we fabricated an active continuous SAWH (AC-SAWH) device with optimized sorbent bed structure. By configuring two sorbent beds and using nano-porous adsorbent by confining lithium chloride in silica sol modified activated carbon fiber felt (ASLI) as atmospheric water adsorbents, such a novel design enables water production in a continuous mode, delivering a water productivity of 8.3 kg day(-1) or 0.67 kg h(-1) at a regeneration temperature of 90 ?, with a thermal efficiency of 32.6%. This is the first exploration in continuous water production with a large-scale SAWH device, meeting personal drinking water demand of 5 L day(-1) and demonstrating a promising water productivity for personal/household utilization in islands. With its excellent all-day freshwater harvesting performance and a scalable process, this continuous SAWH system is potential to make a contribution to the global water-energy-climate nexus.

引用

页数：9