Theoretical and experimental study of cascade solar stills

Ziabari, Fatemeh Bakhtiari; Sharak, Ashkan Zolfaghari; Moghadam, Hamid; Tabrizi, Farshad Farshchi

doi:10.1016/j.solener.2012.12.019

Cited by 42 publications

(15 citation statements)

References 22 publications

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“…Headley and Springer report an increase of 30% in efficiency when cascade-type stills are used [10]. Similar results were obtained in Singapore with stepped-type solar stills producing 25% more distillate than regular basin-type stills [11] and in Iran, where cascade-type solar stills yielded 26% more production both theoretically and experimentally [12]. Additionally, a 77.35% thermal efficiency was reported for stepped solar stills tested under Egyptian climatic conditions [13].…”

Section: Introductionsupporting

confidence: 57%

An investigation into the effect on the productivity of cascade-type solar distillation systems with varying cover thicknesses and still orientations under tropical Caribbean climatic conditions

Boodhan

Haraksingh

2014

Desalination and Water Treatment

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To cite this article: Monica K. Boodhan & Indra Haraksingh (2014): An investigation into the effect on the productivity of cascade-type solar distillation systems with varying cover thicknesses and still orientations under tropical Caribbean climatic conditions, Desalination and Water Treatment, Previous investigative work related to solar stills focuses mainly on issues relating to the temperature gradient between the brine and the condensing surface. It is common practice when calculating the efficiencies of solar stills to use the temperature of the outer glass as the condensing surface temperature rather than the temperature of the actual condensing surface. This practice is done due to the fact that the outer glass surface temperature is easily measurable and on the assumption that there is little or no drop in temperature across the thickness of the cover. These conventions in turn create room for misleading results owing to temperature losses across the cover thickness. The main objectives of this research work are to investigate the effect of using different glass cover thicknesses and different solar still orientations on the productivity of cascade-type solar stills tested under tropical Caribbean climatic conditions. In the investigation, three identical units fitted with glass covers of thicknesses 3.18, 4.76 and 6.35 mm are used. Each unit comprised two identical solar stills: one oriented to face north and the other to face south. Results were gathered at the University of the West Indies in St. Augustine, Trinidad and comparative analyses were conducted. The results indicate that the solar still with the glass cover thickness of 4.76 mm facing south produced the highest yield.

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Section: Introductionsupporting

confidence: 57%

An investigation into the effect on the productivity of cascade-type solar distillation systems with varying cover thicknesses and still orientations under tropical Caribbean climatic conditions

Boodhan

Haraksingh

2014

Desalination and Water Treatment

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“…19) in Iran was proposed by Ziabari et al [103]. The prototype cascade solar still had negative angle stairs in order to increase the residence time of the falling water.…”

Section: Stepped-type Solar Stillsmentioning

confidence: 99%

Advanced designs of solar desalination systems: A review

El-Sebaii

El-Bialy

2015

Renewable and Sustainable Energy Reviews

112

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“…Segundo Abujazar et al (2016), a produtividade está diretamente correlacionada com a quantidade de radiação solar, a temperatura ambiente, a umidade relativa e a velocidade do vento. Ziabari et al (2013) constataram que uma fina camada de água na placa absorvedora de calor ajudou a evaporação da água salobra e melhorou a produtividade.…”

Section: Produtividade Do Dessalinizadorunclassified

Dessalinizador solar do tipo cascata aplicado em poços artesianos no interior da Paraíba

et al. 2020

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Para o consumo humano e as demais atividades domésticas, os moradores do semiárido brasileiro utilizam águas de diversas fontes. Portanto, a análise da qualidade da água é de vital importância, principalmente por utilizarem águas de poços com alto teor de salinidade. Em contrapartida, é um território de elevada incidência de radiação solar, que é fundamental para a dessalinização via energia solar. Desta forma, nesta pesquisa foram realizadas análises físico-químicas de alcalinidade, cloreto, condutividade elétrica, dureza, pH, sódio e turbidez, com o objetivo de determinar a qualidade da água antes e após o processo de dessalinização solar, como também foi avaliado o rendimento do dessalinizador. As águas dessalinizadas apresentaram resultados muito eficientes na remoção dos parâmetros físico-químicos estudados, estando os mesmos de acordo com os padrões de potabilidade exigidos pela Portaria do Ministério da Saúde vigente no país.

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Theoretical and experimental study of cascade solar stills

Cited by 42 publications

References 22 publications

An investigation into the effect on the productivity of cascade-type solar distillation systems with varying cover thicknesses and still orientations under tropical Caribbean climatic conditions

An investigation into the effect on the productivity of cascade-type solar distillation systems with varying cover thicknesses and still orientations under tropical Caribbean climatic conditions

Advanced designs of solar desalination systems: A review

Dessalinizador solar do tipo cascata aplicado em poços artesianos no interior da Paraíba

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