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提出了微聚光直接蒸发海水实现淡化过程的概念,并在漂浮式透明膜板内的微结构中实施,即利用薄膜内部空腔,实现高效太阳能聚光,让太阳光直接加热并蒸发由亲水材料送入腔内的海水,实现海水淡化过程。它的最大优势就是将太阳能集热器与海水淡化器合二为一,漂浮于海面上,省却了土地成本,并可用非金属材料制造。本文对淡化膜中聚光产水单元的结构进行了优化设计,对其聚光过程进行了仿真分析,给出了太阳光不同入射角度下的聚光效率。并在样品结构中进行了稳态的实验验证,证明该装置最高温度可以达到70℃,产水量可以达到1.67 g/h,实现太阳能转化效率37.4%。
The concept of direct evaporation of sea water by micro-concentrating light to realize the desalination process is proposed and implemented in the microstructure of the floating transparent membrane plate, that is, utilizing the internal cavity of the membrane to achieve high-efficiency solar concentration and direct sunlight to evaporate by the pro Water material into the cavity of the sea water to achieve desalination process. Its biggest advantage is the solar collector and desalination combined, floating in the sea, eliminating the cost of land, and non-metallic materials available. In this paper, the structure of the light-water-producing unit in the desalination membrane was optimized. The simulation of the light-gathering process was carried out, and the condensing efficiency under different incident angles of sunlight was given. The steady state experimental verification in the sample structure proves that the maximum temperature of the device can reach 70 ℃, the water yield can reach 1.67 g / h, and the solar energy conversion efficiency can reach 37.4%.