EXPERIMENTAL INVESTIGATION ON LAW OF FRESHWATER PRODUCTION AND INFLUENCE OF INTERNAL FACTORS OF SOLAR CHIMNEY POWER PLANT COMBINED WITH DESALINATION

Zuo Lu; Dai Pengzhan; Yan Ziyang; Qu Bo

doi:10.19912/j.0254-0096.tynxb.2022-0318

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 271-278. DOI: 10.19912/j.0254-0096.tynxb.2022-0318

EXPERIMENTAL INVESTIGATION ON LAW OF FRESHWATER PRODUCTION AND INFLUENCE OF INTERNAL FACTORS OF SOLAR CHIMNEY POWER PLANT COMBINED WITH DESALINATION

Zuo Lu, Dai Pengzhan, Yan Ziyang, Qu Bo

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Abstract

A pilot comprehensive small experimental device of solar chimney power plant combined with desalination was designed and built in Nanjing, China. The freshwater yield law of the integrated system was tested under outdoor conditions. The interaction mechanism of the seawater temperature, water-glass temperature difference, and freshwater yield was investigated. The experimental results show that the daily freshwater production decreases along the radial direction of the solar collector, and suddenly increases in the middle part. The distill basin should be arranged between the entrance of the collector and two thirds of the radial direction as far as possible. The peak water producing period is from about sunset to a moment between 1∶00 and 3∶00 a.m., which accounts for a small proportion of the operation time, but is the main period of the water production. There are different periods in the primary and secondary effects of seawater temperature and the water-glass temperature difference. In the rising stage of water production, the water-glass temperature difference is the main factor, while in the falling stage of water production, the seawater temperature is the main factor. The key for getting high freshwater production is to maintain high seawater temperature and water-glass temperature difference.

Key words

solar chimneys / desalination / condensation / solar collectors / water productivity

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Zuo Lu, Dai Pengzhan, Yan Ziyang, Qu Bo. EXPERIMENTAL INVESTIGATION ON LAW OF FRESHWATER PRODUCTION AND INFLUENCE OF INTERNAL FACTORS OF SOLAR CHIMNEY POWER PLANT COMBINED WITH DESALINATION[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 271-278 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0318

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