Numerical study of a double-slope solar still coupled with capillary film condenser in south Algeria

Belhadj, Mohamed Mustapha; Bouguettaia, Hamza; Marif, Yacine; Zerrouki, Moussa

doi:10.1016/j.enconman.2015.01.069

Cited by 49 publications

(17 citation statements)

References 31 publications

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“…The details of this new model are presented in [14]. Recent studies report the replication of this approach [15]. The same lumped parameter analysis applies, but energy balance equations are modified since the condensing cover is treated as composed of two independent elements for analysis purposes.…”

Section: Single-effect Double-slope Condenser Solar Stillmentioning

confidence: 99%

Current Status of Theoretical and Practical Research of Seawater Single-Effect Passive Solar Distillation in Mexico

Rubio

Fernández-Zayas

Porta-Gándara³

2020

JMSE

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Solar distillation is a practical alternative for freshwater production in arid zones where seawater is abundant. The attractiveness of this approach resides in the simplicity of the solar still, equipment used to produce saline-free water for drinking, intensive agriculture, domestic use and other purposes. A solar still is an apparatus exposed to solar radiation that consists essentially of a basin with a solar collector where saline water is deposited and covered with a transparent inclined glass plate. The system operates as a greenhouse where the heated seawater evaporates and condensates on the inner surface of the cover. The distillate yield is collected in an external container. A research group in Mexico has been working for years doing research on the process of freshwater production with solar stills. Various research aspects have been addressed, among which are mathematical modeling of the physical phenomenon, practical research by building solar stills with different geometries and sizes, and the proposal of a process for mass-production manufacturing of solar stills with technology innovations. This paper is an overview of some of the most relevant results obtained by these research efforts.

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Section: Single-effect Double-slope Condenser Solar Stillmentioning

confidence: 99%

Current Status of Theoretical and Practical Research of Seawater Single-Effect Passive Solar Distillation in Mexico

Rubio

Fernández-Zayas

Porta-Gándara³

2020

JMSE

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“…The cumulative production is about 90% better in the case of the heat sink when compared with the aluminum plate with umbrella. Belhadj concluded that the distillate water production of a double slope solar still, combined with a capillary film condenser cell, decreases with the augmentation in flow feed of saline water .…”

Section: Introductionmentioning

confidence: 99%

Improving the water production of a solar still by adding an internal condensation chamber: A theoretical study

Mahammed

Kerfah

Bezzina

2019

Env Prog and Sustain Energy

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In this article, the validity of a numerical simulation of a basin solar still coupled with a condensation chamber was analyzed, before being cooled through a cooling water system. The system contained a serpentine pipe combined with a rectangular sheet of galvanized steel. The model was validated by comparing calculated and then experimental results mentioned in previous research for a typical day in the month of June 2013, the comparison of results showed a good agreement between the experimental and numerical tests. The model was developed to evaluate the performance of the system with optimum mass flow and compared throughout the typical day of each month of the year with that of a solar still without cooling. The model was investigated numerically according to meteorological data of the Algerian city, Khemis Miliana using the model of Capderou. The equations are modeled by the finite difference method, the Gauss–Seidel iterative method was used to solve the resulting algebraic equation. The highest productivity of the year was 6.7 Kg/m2 during the typical day of august with 60% higher productivity than the still without cooling. It was observed that the productivity of the solar still was sensitive to the flow mass of cooling water. Both the condenser chamber volume and the area from the opening of the evaporator to the condenser chamber have a significant effect on distillate production of the system. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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“…The efficiency was improved by 55% compared to that of a single basin still. Belhadj [4] Suggested attaching a condensation cell to a double slope distiller in order to improve the productivity of the system by about 60 %, which is higher than that of a conventional distiller or a solar distiller with capillary film. Morad [5] Proposed the periodic cooling of the glazing cover of the distiller.…”

Section: Introductionmentioning

confidence: 99%

Monthly fresh water yield analysis of three solar desalination units a comparative study in the south Algeria climatic condition

Moungar¹,

Aberqi²,

Sahli³

et al. 2018

IJHT

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The Purpose of the paper is studied three types solar distillers, double slope with and without immersed fins and the simple solar distiller. A monthly comparative study is investigated experimentally, for a long period of the year. Further, the wind speed influence, the distance between fins, the fins height, the fins number and thickness, on the solar distiller's production, is investigated theoretically. From the obtained results, it is noted that for the wind speed greater than 3.5 m/s, a decrease in the productivity is caused by the cooling of the outer walls, and this induces some heat losses, especially at the front and rear walls of the solar still. The distance between fins has no significant effect on the still productivity. Moreover, increasing the fins height, from 2 to 5 cm, increase the productivity; however, when the height changes from 6 to 8 cm, the distillate production goes down. A larger fins number lead for rise the produced distilled water amount. Therefore, one should use the maximum number of fins, while taking into consideration the feasibility of the assembly. Increasing the water mass makes the productivity to go down. The obtained results on June 11, 2016, show that the proposed system productivity was about 15 to 27 % higher than that of a simple one, under the following conditions, i.e. Mw = 42.61 kg, h1 = 3.6 cm, Vw = 3.5 m/s, lw = 5 cm and Nfins = 12. The total annual cost estimation proof clearly that the payback period is less than a years. As well as, it has been found that the increasing lifetime and the interest rate decreasing caused a decrease in the distilled water unit price.

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Numerical study of a double-slope solar still coupled with capillary film condenser in south Algeria

Cited by 49 publications

References 31 publications

Current Status of Theoretical and Practical Research of Seawater Single-Effect Passive Solar Distillation in Mexico

Current Status of Theoretical and Practical Research of Seawater Single-Effect Passive Solar Distillation in Mexico

Improving the water production of a solar still by adding an internal condensation chamber: A theoretical study

Monthly fresh water yield analysis of three solar desalination units a comparative study in the south Algeria climatic condition

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