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High‐Performance Solar Steam Device with Layered Channels: Artificial Tree with a Reversed Design
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2017-12-04 , DOI: 10.1002/aenm.201701616 He Liu 1 , Chaoji Chen 1 , Guang Chen 2 , Yudi Kuang 1 , Xinpeng Zhao 3 , Jianwei Song 1 , Chao Jia 1 , Xu Xu 1 , Emily Hitz 1 , Hua Xie 1 , Sha Wang 1 , Feng Jiang 1 , Tian Li 1 , Yiju Li 1 , Amy Gong 1 , Ronggui Yang 3 , Siddhartha Das 2 , Liangbing Hu 1
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2017-12-04 , DOI: 10.1002/aenm.201701616 He Liu 1 , Chaoji Chen 1 , Guang Chen 2 , Yudi Kuang 1 , Xinpeng Zhao 3 , Jianwei Song 1 , Chao Jia 1 , Xu Xu 1 , Emily Hitz 1 , Hua Xie 1 , Sha Wang 1 , Feng Jiang 1 , Tian Li 1 , Yiju Li 1 , Amy Gong 1 , Ronggui Yang 3 , Siddhartha Das 2 , Liangbing Hu 1
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Solar steam generation, combining the most abundant resources of solar energy and unpurified water, has been regarded as one of the most promising techniques for water purification. Here, an artificial tree with a reverse‐tree design is demonstrated as a cost‐effective, scalable yet highly efficient steam‐generation device. The reverse‐tree design implies that the wood is placed on the water with the tree‐growth direction parallel to the water surface; accordingly, water is transported in a direction perpendicular to what occurs in natural tree. The artificial tree is fabricated by cutting the natural tree along the longitudinal direction followed by surface carbonization (called as C‐L‐Wood). The nature‐made 3D interconnected micro‐/nanochannels enable efficient water transpiration, while the layered channels block the heat effectively. A much lower thermal conductivity (0.11 W m−1 K−1) thus can be achieved, only 1/3 of that of the horizontally cut wood. Meanwhile, the carbonized surface can absorb almost all the incident light. The simultaneous optimizations of water transpiration, thermal management, and light absorption results in a high efficiency of 89% at 10 kW m−2, among the highest values in literature. Such wood‐based high‐performance, cost‐effective, scalable steam‐generation device can provide an attractive solution to the pressing global clean water shortage problem.
中文翻译：
具有分层通道的高性能太阳能蒸汽设备：带有逆向设计的人造树
结合了最丰富的太阳能资源和未净化水的太阳能蒸汽发电，已被认为是最有前途的净水技术之一。在这里，采用反向树设计的人工树被证明是一种经济高效，可扩展但高效的蒸汽发生装置。反向树设计意味着将木头放在树上，树的生长方向平行于水面。因此，水在垂直于天然树木的方向上运输。人造树是通过沿纵向切割天然树，然后进行表面碳化（称为C-L-Wood）制成的。天然的3D互连微通道/纳米通道可实现有效的水蒸腾作用，而分层通道则可有效阻隔热量。因此，可以实现-1 K -1），仅为水平切割木材的1/3。同时，碳化的表面几乎可以吸收所有入射光。水蒸腾，热管理和光吸收的同时优化导致在10 kW m -2时达到89％的高效率，这是文献中的最高值。这种基于木材的高性能，高性价比，可扩展的蒸汽发生装置可以为紧迫的全球清洁水短缺问题提供有吸引力的解决方案。
更新日期：2017-12-04
中文翻译：
具有分层通道的高性能太阳能蒸汽设备：带有逆向设计的人造树
结合了最丰富的太阳能资源和未净化水的太阳能蒸汽发电，已被认为是最有前途的净水技术之一。在这里，采用反向树设计的人工树被证明是一种经济高效，可扩展但高效的蒸汽发生装置。反向树设计意味着将木头放在树上，树的生长方向平行于水面。因此，水在垂直于天然树木的方向上运输。人造树是通过沿纵向切割天然树，然后进行表面碳化（称为C-L-Wood）制成的。天然的3D互连微通道/纳米通道可实现有效的水蒸腾作用，而分层通道则可有效阻隔热量。因此，可以实现-1 K -1），仅为水平切割木材的1/3。同时，碳化的表面几乎可以吸收所有入射光。水蒸腾，热管理和光吸收的同时优化导致在10 kW m -2时达到89％的高效率，这是文献中的最高值。这种基于木材的高性能，高性价比，可扩展的蒸汽发生装置可以为紧迫的全球清洁水短缺问题提供有吸引力的解决方案。
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