Resonant energy transfer enhances solar thermal desalination
Resonant energy transfer enhances solar thermal desalination
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DOI：
10.1039/c9ee03256h
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发表时间：
2020-03-01
影响因子：
32.5
通讯作者：
Halas, Naomi J.
中科院分区：
文献类型：
--
作者：
Alabastri, Alessandro;Dongare, Pratiksha D.;Halas, Naomi J.
基于蒸发的太阳能热蒸馏是净化高盐水的一种有前景的方法，但该过程固有的液-气相变使其本质上是能源密集型的。在这里，我们表明蒸馏水和输入水之间的热交换可以满足共振条件，从而导致淡水产量急剧增加。通过将纳米光子学太阳能膜蒸馏与动态热回收相结合，可以实现蒸馏水的大幅增益（500%），动态热回收是通过控制输入流量作为入射光强度的函数来实现的。馏出物和进料之间的循环热通量实现的共振条件使系统能够以全新的方式运行，就像脱盐振荡器一样。这里介绍的谐振振荡器概念是通用的，可以应用于其他系统，例如热能存储或太阳能化学反应器。
Evaporation-based solar thermal distillation is a promising approach for purifying high-salinity water, but the liquid-vapor phase transition inherent to this process makes it intrinsically energy intensive. Here we show that the exchange of heat between the distilled and input water can fulfill a resonance condition, resulting in dramatic increases in fresh water production. Large gains (500%) in distilled water are accomplished by coupling nanophotonics-enabled solar membrane distillation with dynamic thermal recovery, achieved by controlling input flow rates as a function of incident light intensity. The resonance condition, achieved for the circulating heat flux between the distillate and feed, allows the system to behave in an entirely new way, as a desalination oscillator. The resonant oscillator concept introduced here is universal and can be applied to other systems such as thermal energy storage or solar-powered chemical reactors.