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[IEEE 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Tangier (2017.12.4-2017.12.7)] 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Experimental Analysis of an Inclined Cascade Solar Still with Slope Surfaces and Baffles
摘要： Morocco has an important solar energy potential, for this reason solar desalination is the appropriate and the least expensive method. The single basin type is widely used. However in comparison with other techniques, the conventional solar still with single basin has the lowest yield. A new attempt was fabricated to develop the solar stills production, using a cascade slope absorber plate with baffles. This work presents an experimental analysis of the new construction of solar still. The solar intensity and the ambient temperature are considered for testing the solar still to examine the effect of the new design of the absorber plate.
关键词： Desalination,Wick type stills,Cascade solar still,Stepped solar still,Brackish water
更新于2025-09-23 15:22:29
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Performance study on a photovoltaic thermal (PV/T) stepped solar still with a bottom channel
摘要： This study presents a novel type of stepped PV/T solar still in which a bottom channel is designed under the base of the still, aiming to enhance heat transfer. In order to assess the performance of the desalination system, a theoretical model is established, and validated by the existing experimental data, thus can be used for energy and exergy analysis. The effects of bottom channel structure on thermal performance (temperatures of components, heat transfer coefficients, thermal efficiency), exergy performance (total exergy loss of each component, exergy efficiency) and freshwater productivity are investigated. The comparative results show that, when the depth of bottom channel H is 0.01 m, the average heat transfer rate from absorber plate to saline water is improved by 44%, thereby the average temperature of saline water is raised by 16.4% and the daily freshwater productivity is improved by 51.7%. Moreover, the average thermal efficiency and exergy efficiency are increased by 17% and 3% respectively. However, the freshwater productivity could be decreased due to the increase of H. Compared with H = 0.01 m, the daily fresh water production is decreased by 17% when H = 0.03 m. The results of the exergy analysis indicate that the optimum depth of bottom channel is around 0.01 m.
关键词： Bottom channel,Exergy efficiency,PV/T system,Energy efficiency,Stepped solar still
更新于2025-09-11 14:15:04