为提升盘式太阳能蒸馏池的产水量,在蒸馏池内竖向设置气隙膜组件,提出一种膜蒸馏强化型的新型太阳能蒸馏池,并通过试验证实其技术可行性。测试表明,蒸馏池内竖向增设膜组件提高蒸馏池产水是可行的;膜蒸馏的单位面积小时产水量最少是盘式的3.7倍,增设膜组件可提升蒸馏池产水微弱时期的产水量,实现昼夜连续性产水;新型膜蒸馏耦合太阳能蒸馏池运行1 d的日总产水量为1528 g,实际效率为21.5%,分别较同时测试得到的传统太阳能蒸馏池的提高11.6%和11.4%。
Abstract
To improve the freshwater yield of the basin solar still, a novel solar still enhanced by membrane distillation was proposed by installing an air-gap membrane module vertically inside the solar still, and its technical feasibility was experimental verified. Tests have shown that it is feasible to install membrane modules vertically to increase water production in the solar still. The hourly water production per unit area of membrane distillation is at least 3.7 times that of the basin distillation, and the addition of the membrane module can increase the water production during the periods of low productivity, and realize continuous water production day and night. The total daily water production of the membrane distillation enhanced basin solar still for one day of operation was 1,528 g and the actual efficiency was 21.5%, which was 11.6% and 11.4% higher than that of the conventional solar still obtained from the simultaneous tests, respectively.
关键词
太阳能 /
海水淡化 /
蒸馏 /
气隙式膜组件 /
疏水膜
Key words
solar energy /
desalination /
distillation /
air-gap membrane module /
hydrophobic membrane
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