一种基于“最优捕集窗口”设计的全球化空气取水系统

作     者：李乾 邵昭 邹启宏 潘权稳 赵曜 冯耀辉 王雯雯 王如竹 葛天舒 Qian Li;Zhao Shao;Qihong Zou;Quanwen Pan;Yao Zhao;Yaohui Feng;Wenwen Wang;Ruzhu Wang;Tianshu Ge

作者机构：Institute of Refrigeration and CryogenicsShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第10期

页      面：1437-1447页

核心收录：

学科分类：02[经济学] 0202[经济学-应用经济学] 

基　　金：supported by the National Natural Science Foundation of China(51922070). 

主　　题：Atmospheric water harvesting Thermodynamic optimization Optimal harvesting window Large-scale and worldwide water production 

摘      要：Atmospheric water harvesting(AWH)is a promising solution to the water shortage problem.Current sorption-based AWH(SAWH)systems seldom obtain both wide climatic adaptability and high energy efficiency due to the lack of thermodynamic optimization.To achieve the ideal harvesting circulation in SAWH systems,the“optimal harvesting window(OHW)design based on thermodynamic analysis was first proposed and validated by our prototype.The“OHWtheory indicates the water production rate and energy efficiency could be improved by properly reducing the adsorption temperature.As the humidity increases,the optimal adsorption temperature should be closer to the dew point of the environment.Experimental results revealed that,loaded with 3 kg widely adopted silica gel,the daily water production could reach 5.76-17.64 L/d with ultrahigh energy efficiency of 0.46-1.5 L/kWh.This prototype could also achieve optimal performance in wide climatic conditions in terms of 13-35℃and 18%-72%RH.Lastly,the performance of photovoltaic(PV)-driven SAWH was evaluated.Results showed that a 1 m^(2)PV panel could generate 0.66-2 L water per day in Shanghai throughout the year,the highest in opening literature.Notably,this work introduces a promising concept that can help achieve large-scale,ultra-fast,energyefficient AWH worldwide.