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Study of an passive solar still
https://doi.org/10.15518/isjaee.2024.09.080-095
Abstract
The study demonstrates that, in a traditional desalination plant, solar energy penetrates the pool water through a translucent coating, which also functions as a steam condenser. However, the light transmission of this coating is significantly reduced during condensation due to the formation of films, jets, and droplets of condensate.
The research establishes that incorporating a separate steam condenser within the system structure produces beneficial effects across all recorded levels of solar insolation and ambient temperatures. A significant influence of liquid temperature on the evaporation rate from the free surface is observed. By leveraging this effect, the installation of an additional steam-dynamic circuit, using a low-boiling coolant, for solar heating of the pool yields a considerable positive outcome, particularly when the coolant (acetone) reaches a temperature exceeding its boiling point.
Furthermore, the addition of a screen at the rear wall of the desalination plant does not provide a beneficial effect; the wall temperature remains 2-3 °C higher than without the protective screen.
The experimental study highlights the potential for significantly enhancing the efficiency of the solar water desalination system, particularly for the city of Yekaterinburg. The proposed design of the desalination plant is expected to be even more effective in regions with higher levels of solar insolation and ambient temperatures.
About the Authors
A. Мола
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Мола Ахмед, PhD student, research Engineer of the Department of Nuclear Power Plants and Renewable Energy Sources
Sverdlovsk region, Yekaterinburg, Mira st., 19
S. E. Shcheklein
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Shcheklein Sergey Evgenievich, Professor, Doctor of Technical Sciences, Head of the Department of Nuclear Power Plants and Renewable Energy Sources
Sverdlovsk region, Yekaterinburg, Mira st., 19
A. M. Dubinin
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Dubinin Alexey Mikhailovich, Doctor of Technical
Sciences, Professor of the Department
of Heat Power Engineering and Heat
Engineering
Sverdlovsk region, Yekaterinburg, Mira st., 19
N. Алван
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Алван Насир, Candidate of Technical Sciences, Research Engineer of the Department of Nuclear Power Plants and Renewable Energy Sources
Sverdlovsk region, Yekaterinburg, Mira st., 19
Yu. E. Nemikhin
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Nemikhin Yurii Evgenievich, Physics teacher
Sverdlovsk region, Yekaterinburg, Mira st., 19
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Review
For citations:
Мола A., Shcheklein S.E., Dubinin A.M., Алван N., Nemikhin Yu.E. Study of an passive solar still. Alternative Energy and Ecology (ISJAEE). 2024;(9):80-95. (In Russ.) https://doi.org/10.15518/isjaee.2024.09.080-095
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