Harps Enable Water Harvesting under Light Fog Conditions,Advanced Sustainable Systems

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Harps Enable Water Harvesting under Light Fog Conditions
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2020-04-16 , DOI: 10.1002/adsu.202000040
Weiwei Shi ₁ , Thomas W. van der Sloot ₂ , Brandon J. Hart ₁ , Brook S. Kennedy ₂ , Jonathan B. Boreyko _{1,

3}

Affiliation

Fog harvesting is useful for passively collecting fresh water in arid regions, but the efficiency of current mesh‐based harvesters is compromised by their poor drainage. Inspired by the linear needles of redwood trees, “fog harps” are developed whose array of vertical wires enables an unobstructed drainage pathway. A full‐scale (1 m² frame) fog harp is fabricated by winding a stainless steel wire around a spinning aluminum frame featuring threaded rods. The fog harp is field tested for a full year at a local farm (Blacksburg, VA, USA), alongside the control case of a mesh harvester. Under moderate fog conditions, the fog harp collects anywhere from 2 to 78 times more water compared to the mesh harvesters. Under light fog conditions, the fog harp collects up to several hundred milliliters of water per day while the mesh is unable to collect any water at all. The water harvesting performance of fog harps is therefore unprecedented in two ways: they substantively elevate the performance ceiling when exposed to healthy fog while also enabling, for the first time, appreciable water harvesting under light fog.

中文翻译：

竖琴可在轻雾条件下集水

雾气收集对于在干旱地区被动收集淡水很有用，但是目前基于网状的收集器的效率因排水不畅而受到损害。受到红木树的线性针的启发，开发了“雾竖琴”，其竖线阵列使排水路径畅通无阻。全尺寸（1 m ²雾竖琴是通过将不锈钢丝缠绕在带有螺纹杆的旋转铝制框架上而制成的。除网状收割机的控制箱外，雾竖琴还在当地农场（美国弗吉尼亚州布莱克斯堡）进行了整年的现场测试。在中等雾条件下，雾竖琴收集的水量是网状收割机的2至78倍。在轻雾条件下，雾竖琴每天收集多达数百毫升的水，而网眼根本无法收集任何水。因此，雾竖琴的集水性能在两个方面都是空前的：当暴露于健康雾中时，它们可以大大提高性能上限，同时还可以首次在轻雾下实现可观的集水。

更新日期：2020-04-16

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