Enhanced Steam Temperature Enabled by a Simple Three‐Tier Solar Evaporation Device,Global Challenges

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Enhanced Steam Temperature Enabled by a Simple Three‐Tier Solar Evaporation Device
Global Challenges ( IF 4.4 ) Pub Date : 2021-02-18 , DOI: 10.1002/gch2.202000092
Zhenzhen Guo ₁ , You Xu ₁ , Fang Yu ₁ , Jiacheng Yin ₁ , Xianbao Wang ₁

Affiliation

Interfacial water evaporation technology by using solar energy provides one of the promising pathways for freshwater shortage management. However, current research mainly focuses on the improvement of evaporation efficiency by macro or microregulations, ignoring the steam temperature, which is a manifestation of the quality of water. Herein not only is a high‐rate solar evaporation achieved but also steam temperature is enhanced by a simple three‐tier (wet absorber–air gap–dry absorber) device. In a routine interfacial evaporation test, the evaporator achieves a stable evaporation rate up to 2.15 kg m⁻² h⁻¹ under one sun, demonstrating a competitive evaporation rate compared with other reports. With the three‐tier device, the steam temperature can increase 33.7%, 41.13%, and 47% without dry absorber under one sun, two sun, and three sun illumination, respectively. At the same time, the steam temperature can be as high as 95.5 °C under three sun intensities. This work provides the possibility of using a simple three‐tier device for high‐temperature steam generation without extra energy input, which contributes to an idea for future research on the production high‐quality water.

中文翻译：

通过简单的三层太阳能蒸发装置提高蒸汽温度

利用太阳能的界面水蒸发技术为淡水短缺管理提供了有前景的途径之一。但目前的研究主要集中在通过宏观或微观调节来提高蒸发效率，忽视了蒸汽温度这一水质量的体现。这里不仅实现了高速太阳能蒸发，而且通过简单的三层（湿吸收器-气隙-干吸收器）装置提高了蒸汽温度。在常规界面蒸发测试中，蒸发器在一个太阳下实现了高达2.15 kg m ^-2 h ^-1的稳定蒸发速率，与其他报道相比，表现出具有竞争力的蒸发速率。采用三层装置，在无干燥吸收器的情况下，在一太阳、两太阳和三太阳光照下，蒸汽温度分别可提高33.7%、41.13%和47%。同时，在三种太阳强度下，蒸汽温度可高达95.5℃。这项工作提供了使用简单的三层装置在不需要额外能量输入的情况下产生高温蒸汽的可能性，这为未来生产高质量水的研究提供了一种思路。

更新日期：2021-04-08

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