Coupled heat and humidity control system of narrow-trough solar collector and solid desiccant in Chinese solar greenhouse: Analysis of optical / thermal characteristics and experimental study

文献类型: 外文期刊

第一作者: Chen, Xinge

作者: Chen, Xinge;Wu, Gang;Tao, Tao;Chen, Xinge;Wu, Gang;Ji, Yaning;Ma, Qianlei;Tong, Yuxin;Chen, Xinge;Feng, Chaoqing;Ji, Yaning;Liang, Hao

作者机构:

关键词: Chinese solar greenhouse; Heat and humidity control; Narrow-though solar collector; Solid desiccant

期刊名称:ENERGY ( 影响因子:9.0; 五年影响因子:8.3 )

ISSN: 0360-5442

年卷期: 2023 年 273 卷

页码:

收录情况: SCI

摘要: Taking Chinese solar greenhouse as the research object, a greenhouse heat and humidity control system combining Narrow-Trough Solar Collector (NTC) and solid desiccant is proposed in this paper. The system is a day and night double-cycle mode, which can realize multiple adsorption and desorption by using solid desiccant. On the basis of solar energy as the main energy supply, a sustainable regulation means is realized. The optical analysis and geometric relationship analysis are carried out. When the inclination angle of NTC is 30 degrees, it can provide more than 80% optical efficiency in Beijing winter at 40 degrees north latitude. The system can regulate the relative humidity of greenhouse at night from high humidity range to normal crop growth range in winter (94.2%-81.3%), the average relative humidity decreased by 12.9% and the indoor average temperature increased by 1.2 degrees C.The water removal rate of the system is 11.6 g/s m(-2). Combined with solar medium tem-perature heat collection technology and recyclable solid desiccant, the temperature and humidity environment in the solar greenhouse in winter is adjusted to the appropriate range for crop growth.

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