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吸附剂合的辐射冷却和太阳能加热,以改善大气水的收集

Yimou Huang¹, Qing Li¹, Zhuo Chen¹

¹School of Energy Science and Engineering, Central South University, Changsha, China.

Journal of colloid and interface science

|November 12, 2023

概括

这项研究引入了一种新的大气水收集 (AWH) 系统,该系统结合了吸附剂合辐射冷却和太阳能加热. 这种创新方法显著提高了水的捕获和释放率,为全球水资源短缺提供了一个有希望的解决方案.

科学领域:

材料科学材料科学材料科学
可再生能源技术可再生能源技术
环境工程环境工程

背景情况:

全球水资源短缺需要先进的大气水收集 (AWH) 技术.
现有的 AWH 方法 (雾,露,吸附) 由于依赖单一机制,通常具有有限的工作条件和性能.
开发具有提高效率和更广泛适用性的被动AWH系统至关重要.

研究的目的:

开发和评估一个基于水凝的复合性被动AWH系统,与辐射冷却和太阳能加热集成.
与传统方法相比,提高捕获水 (夜间) 和释放水 (白天) 的速度.
为了研究系统在各种气象条件下的性能.

主要方法:

制造一种复合水凝,其低度的水相变化.
水凝与辐射冷却 (高热发射) 和太阳能加热 (高太阳能吸收) 组件的集成.
户外实验测量水的捕获和释放率,分析气象参数的影响.

主要成果:

获得了高的热发射率 (ε ̄_LWIR = 0.98) 和太阳吸收率 (α ̄_太阳 = 0.93).
夜间的辐射冷却增加了从0.242到0.310公斤的水捕获率.
白天的太阳界面蒸发实现了水释放率为1.154公斤m−2.h−1.
全天最大的收集水量达到每周期2.04公斤/米-2,表明运行气象参数范围广泛.

结论:

开发的被动AWH系统有效地利用吸附剂合的辐射冷却和太阳能加热来提高水的收集.
该系统在各种气象条件下表现出强的性能,解决了单机制 AWH 技术的局限性.
这种综合方法为高效的太阳能驱动大气水生成提供了可行的途径.

关键词:

吸附方式吸附方式吸附方式蒸发是蒸发的过程.水凝是一种水凝.辐射冷却是一种辐射冷却.收集水的方法收集水的方法

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