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All‐Cold Evaporation under One Sun with Zero Energy Loss by Using a Heatsink Inspired Solar Evaporator
Advanced Science ( IF 14.3 ) Pub Date : 2021-02-08 , DOI: 10.1002/advs.202002501 Xuan Wu 1 , Zhiqing Wu 2 , Yida Wang 1 , Ting Gao 1 , Qin Li 2 , Haolan Xu 1
Advanced Science ( IF 14.3 ) Pub Date : 2021-02-08 , DOI: 10.1002/advs.202002501 Xuan Wu 1 , Zhiqing Wu 2 , Yida Wang 1 , Ting Gao 1 , Qin Li 2 , Haolan Xu 1
Affiliation
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Interfacial solar steam generation is a highly efficient and sustainable technology for clean water production and wastewater treatment. Although great progress has been achieved in improving evaporation rate and energy efficiency, it's still challenging to fully eliminate the energy loss to the surrounding environment during solar steam generation. To achieve this, a novel heatsink‐like evaporator (HSE) is developed herein. During solar evaporation, the temperature on the top solar evaporation surface can be regulated by the fin structures of the HSE. For the evaporators with 5 to 7 heatsink fins, the temperature of the solar evaporation surface is decreased to be lower than the ambient temperature, which fully eliminates the radiation, convection, and conduction heat losses, leading to the absolute cold evaporation over the entire evaporator under 1.0 sun irradiation. As a result, massive energy (4.26 W), which is over 170% of the received light energy, is harvested from the environment due to the temperature deficit, significantly enhancing the energy efficiency of solar steam generation. An extremely high evaporation rate of 4.10 kg m−2 h−1 is realized with a 6‐fin photothermal HSE, corresponding to an energy conversion efficiency far beyond the theoretical limit, assuming 100% light‐to‐vapor energy conversion.
中文翻译：
使用受散热器启发的太阳能蒸发器在一个太阳下实现零能量损失的全冷蒸发
界面太阳能蒸汽发生是一种用于清洁水生产和废水处理的高效且可持续的技术。尽管在提高蒸发率和能源效率方面已经取得了很大进展，但要完全消除太阳能蒸汽发电过程中对周围环境的能量损失仍然具有挑战性。为了实现这一目标，本文开发了一种新型散热器式蒸发器（HSE）。在太阳能蒸发过程中，顶部太阳能蒸发表面的温度可以通过HSE的翅片结构来调节。对于散热片数量为5～7片的蒸发器，太阳能蒸发面的温度降低至低于环境温度，充分消除了辐射、对流、传导热损失，使整个蒸发器达到绝对冷蒸发。 1.0太阳光照射下。因此，由于温度不足，可以从环境中收集大量能量（4.26 W），占所接收光能的 170% 以上，从而显着提高了太阳能蒸汽发电的能源效率。6翅片光热HSE实现了4.10 kg m -2 h -1的极高蒸发率，假设100%光-蒸汽能量转换，对应的能量转换效率远远超出理论极限。
更新日期：2021-04-08
中文翻译：
使用受散热器启发的太阳能蒸发器在一个太阳下实现零能量损失的全冷蒸发
界面太阳能蒸汽发生是一种用于清洁水生产和废水处理的高效且可持续的技术。尽管在提高蒸发率和能源效率方面已经取得了很大进展，但要完全消除太阳能蒸汽发电过程中对周围环境的能量损失仍然具有挑战性。为了实现这一目标，本文开发了一种新型散热器式蒸发器（HSE）。在太阳能蒸发过程中，顶部太阳能蒸发表面的温度可以通过HSE的翅片结构来调节。对于散热片数量为5～7片的蒸发器，太阳能蒸发面的温度降低至低于环境温度，充分消除了辐射、对流、传导热损失，使整个蒸发器达到绝对冷蒸发。 1.0太阳光照射下。因此，由于温度不足，可以从环境中收集大量能量（4.26 W），占所接收光能的 170% 以上，从而显着提高了太阳能蒸汽发电的能源效率。6翅片光热HSE实现了4.10 kg m -2 h -1的极高蒸发率，假设100%光-蒸汽能量转换，对应的能量转换效率远远超出理论极限。
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