Research on solar steam generation with enhanced heat collection by external reflector

被引：0
|
作者：
Han J.-Y. [1 ]
Ji X. [1 ]
Xu H.-Y. [1 ]
Heng Y.-Y. [1 ]
Wang Y. [1 ]
Deng J. [1 ]
机构：
[1] Solar Energy Research Institute, School of Energy and Environmental Science, Yunnan Normal University, Kunming
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2020年 / 34卷 / 04期
关键词：
Heat collecting; Heat transfer; Reflector; Solar steam; Vaporization;
D O I：
10.3969/j.issn.1003-9015.2020.04.010
中图分类号：
学科分类号：
摘要：
In order to study the effects of extra external reflector on solar steam generation, solar energy received under different seasons, azimuth angles and inclination angles of the reflector are calculated. The results show that the optimized azimuth angle of the mirror is -90° in spring and winter, and 180° in summer and autumn. The optimized inclination angle of the mirror is less than 25° in spring and winter, and greater than 25° in summer and autumn. The useful energy per unit area at 10:00~16:00 increases by 28.5% with the mirror enhanced heat collection in typical sunny days (the average solar irradiation is 850 W∙m-2). The steam generation rate increases from 15.68 mL∙min-1 to 27.79 mL∙min-1 per unit time, and the average steam yield increases by 77.23%. When the solar irradiance reaches more than 1000 W∙m-2, the maximum steam rate of the device with the external reflector is 2.5 times higher than that without the external reflector. The daily steam capacity increases from 8.18 kg to 12.6 kg. © 2020, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：919 / 929
页数：10
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