Experimental Study of Stepped Solar Still Integrated with Reflectors and External Condenser

El-Samadony, Y.A.F.; Abdullah, A.S.; Omara, Z.M.

doi:10.1080/08916152.2014.890964

Cited by 99 publications

(25 citation statements)

References 28 publications

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“…An experimental study of stepped solar still with reflectors (internal and external) and external condenser was conducted by El-Samadony et al [9], the tray width equal the step width equal 100 mm. A comparison between modified stepped solar still and single basin solar still is carried out to evaluate the developed desalination system performance under the same climate conditions.…”

Section: Reflectors and Condensermentioning

confidence: 99%

Techniques used to improve the performance of the stepped solar still—A review

Kabeel

Omara

Younes

2015

Renewable and Sustainable Energy Reviews

135

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Section: Reflectors and Condensermentioning

confidence: 99%

Techniques used to improve the performance of the stepped solar still—A review

Kabeel

Omara

Younes

2015

Renewable and Sustainable Energy Reviews

135

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“…One of the challenges of the solar still is the difficulty of the condensation process of the water vapor. To enhance the condensation process, these techniques have been studied: (a) cooling of the glass cover by the flow of air and water and air, (b) enlarging the condensation area, (c) condensation by finned coupled condenser, and (d) active cooling by incorporating TEC …”

Section: Introductionmentioning

confidence: 99%

“…26 One of the challenges of the solar still is the difficulty of the condensation process of the water vapor. To enhance the condensation process, these techniques have been studied: (a) cooling of the glass cover by the flow of air 27 and water and air, [28][29][30] (b) enlarging the condensation area, 31 (c) condensation by finned coupled condenser, 16,32 and (d) active cooling by incorporating TEC. 33,34 While the integration of the PV module with a solar still can prevent overheating in the PV module, the condensation process of the evaporated vapor (by the still) is difficult due to the increase of the glass temperature.…”

Section: Introductionmentioning

confidence: 99%

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A novel hybrid photovoltaics/thermoelectric cooler distillation system

2018

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Summary In this paper, a novel hybrid photovoltaics/thermoelectric cooler (PV/TEC) distillation system has been introduced. The limitation for distillation system working under hot arid climate is the heat removal required for the condensation process. The novelty of the proposed system is that it utilizes TEC to improve the condensation process. The proposed system composed of two porous layers separated by an air gap. The upper porous layer is installed at the back of a PV module; the lower porous layer is installed at the top of a TEC modules layer. This system can provide the demand of electricity and potable water for those people who live in rural areas (using one unit or more). The proposed system prevents PV module from overheating and actively enhancing the condensation process of the evaporated water. A steady‐state mathematical model has been proposed. This model was solved and simulated by equation solver software. Wind speed, solar radiation, and ambient temperature effect on the system performance were simulated and discussed. Results showed that the maximum productivity of the system reached an ambient temperature of 298 K, solar radiation of 1000 W/m2 and wind speed of 5.5 m/s. The maximum yield of the system was 4.2 kg of distilled water per day with a net electrical output power of 73 W with an overall efficiency of 57.9% and PV cell efficiency of 12.32%.

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“…A suction fan fixed on top side of basin so as to collect water vapour to the condenser. Experiments showed that with the use of both mirror and condenser the glass temperature increased about 10 0 C. Use of exterior condenser with mirror improved water output of stepped still by about 165% over ordinary still [24]. studied the effect of water flow rate on daily productivity of a weir type solar still.…”

Section: IImentioning

confidence: 99%

Recent Advancements In Stepped Solar Still & Its Performance Parameters

Malik¹

2017

IJRASET

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Solar distillation is a simple technique to get fresh and pure water. Different designs of solar distillation has been studied in different regions of the world. Stepped basin type solar still is an efficient design in which flat basin of conventional solar still is replaced with stepped tray basin. Different types of design, operational and climatic parameters of stepped solar still has been studied in this review paper. Stepped solar still with 5mm water depth and 120mm tray width resulted optimum design parameter. Stepped basin solar still with the combination of solar collector, hot water tank, internal and external reflector and condenser resulted higher yield which is sufficient to fullfill the small family need. The performance of stepped solar still can be highly improvedwith the use of energy storage material, additives, sponges etc. Climatic parameter like solar radiation, wind speed and ambient temperature also effect the productivity of stepped solar still. Higher wind speed decreases the temperature difference between the glass cover and basin water temperature and thus increases the productivity. Keywords: solar still, stepped solar still, performance parameters, weir design I.INTRODUCTION Water is the basic necessity of every human being that lives on earth. Fresh water is available in rivers, lakes and underground water reservoirs. About 71% of the earth surface is covered with water, of which 96.5% is found in ocean, 1.7% in groundwater, 1.7% in glaciers and ice caps and 0.01% in the air as vapors and clouds. Only 2.5% of the earth water is drinkable water. Human that living on earth requires nearly 30-50 L/day of potable water for drinking and cooking purpose. But the availability of fresh water from the natural water resources is shrinking day by day due to rapid growth of population, water pollution and poor water management. Contaminated water always contains some harmful bacteria, viruses, dissolved and undisclosed materials, chemical and physical contaminants which causes serious damage to health on consumption [1][2][3]. There are different kind of purification methods suchas sedimentation, filtration, and distillation etc. which are used to get pure water from the contaminated water. There are also some biological(slow sand filters or biologically activecarbon), chemical (flocculation and chlorination) and electromagnetic processes (ultraviolet light) that are used for extraction of fresh water. The industrial desalination methods which involve either phase change phenomenon or semi-permeable membranes for extraction of pure water are namely, multiple effect desalination, multi stage flash desalination, thermal vapour compression, mechanical vapour compression etc. These conventional methods of producing fresh water are highly energy consuming and required heat in the form of mechanical or electrical work. Solar desalination seems to be the economical and viable techniques of purifying the saline water [4].

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Experimental Study of Stepped Solar Still Integrated with Reflectors and External Condenser

Cited by 99 publications

References 28 publications

Techniques used to improve the performance of the stepped solar still—A review

Techniques used to improve the performance of the stepped solar still—A review

A novel hybrid photovoltaics/thermoelectric cooler distillation system

Recent Advancements In Stepped Solar Still & Its Performance Parameters

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