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A.W. Kandeal

Bio: A.W. Kandeal is an academic researcher from Kafrelsheikh University. The author has contributed to research in topics: Materials science & Solar still. The author has an hindex of 12, co-authored 22 publications receiving 462 citations. Previous affiliations of A.W. Kandeal include Huazhong University of Science and Technology.

Papers
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TL;DR: A review of the literature dealing with improvement methods, design configurations and applications of different types of solar air heaters (SAHs) is presented in this article, where different improvements have been made on SAHs either experimental or theoretical in order to improve their performance.
Abstract: This article aims to present a review of the literature dealing with improvement methods, design configurations and applications of different types of solar air heaters (SAHs). Different investigations have been made on SAHs either experimental or theoretical in order to improve their performance. Different modifications on absorber plate have been made. One of the important improving theories is using fins to increase the heat transfer area. Various types of fins achieved enhancement in the performance such as longitudinal fins, corrugated fins and fins attached with baffles. The recycling process also enhanced the performance of SAHs. Also it is found that to improve both the heat transfer and thermo-hydraulic performance of SAH, artificially roughened absorbers are used. Using artificial roughness, the results showed good enhancement of both Nusselt number and friction coefficient for a wide range of Reynolds number. Also in the view of using heat storage materials, especially phase change materials (PCMs), various types of packing bed and selective coated absorbers give good improvement of the efficiency of SAHs. As a result of these improvements, SAHs became more popular in more applications, with a good reduction in fuel consumption and costs of installation and operation.

144 citations

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TL;DR: In this article, a novel light-absorbing material called hydrogel is used to enhance photothermal solar efficiency conversion by decreasing the heat loss in the heat transfer process due to the heat localization on the air-water interface.

111 citations

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TL;DR: In this paper, an experimental approach of a new hybrid system of modified pyramid solar still (MPSS) combined with evacuated tubes and nanofluids for high thermal performance was presented.

109 citations

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TL;DR: In this article, a step double slope solar still (SDSSS) with linen wicks (LWs) and carbon black nanoparticles (CBNs) was used to increase evaporation surface area and enhance heat transfer.

106 citations

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TL;DR: In this article, a desiccant mechanism using a highly hygroscopic silica gel was tested on the double-slope half-cylindrical basin solar still (DS-HCBSS) to extract the water content from the ambient air.

83 citations


Cited by
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TL;DR: In this article, the authors present a detailed overview of the current potential and future aspects of involving solar industrial process heating systems in industrial applications, and identify industrial processes that are most compatible for solar system integration depending on temperature level and the type of solar collector in use.
Abstract: In developing countries, industries and manufacturing sectors consume a major portion of the total consumption of energy, where most of the energy is used for low, medium or high temperature heat generation to be used for process applications known as process heat. The necessity to commercialize clean, cheap and efficient renewable sources of energy in industrial applications emerges from increasing concerns about greenhouse gas emissions and global warming and decreasing fossil fuel use in commercial sectors. As an abundant source of energy, solar energy technologies have proven potential. Recent research shows currently only a few industries are employing solar energy in industrial processes to generate process heat while replacing fossil fuels. Solar thermal power generation is already very well-known and getting popular in recent years while other potential applications of the concentrated heat from solar radiation are little explored. This review paper presents a detailed overview of the current potential and future aspects of involving solar industrial process heating systems in industrial applications. In order to keep pace with this emerging and fast growing sector for renewable energy applications, it is necessary to get in depth knowledge about the overall potential of industrial processes in individual industrial sector where solar process heat is currently in use and identifying industrial processes are most compatible for solar system integration depending on temperature level and the type of solar collector in use. Furthermore, the promising sectors needs to be identified for the use of solar heat using industrial processes for the integration of solar heat, so that countries with immense solar energy potential can use those technologies in future to reduce fossil fuel consumption and develop sustainable industrial systems. This paper presents a comprehensive review of the potential industrial processes that can adopt solar process heating systems and thus driving towards sustainable production in industries.

170 citations

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TL;DR: In this paper, the impact of internal reflectors on the trays distiller performance was investigated, and the influence of painting the surfaces of the solar still by the mixture of black paint and copper oxide (CuO) nanoparticles was studied.
Abstract: The potable water shortage is a big problem facing the governments and decision-makers everywhere. Solar distiller is one of the techniques that participate in solving this problem. In this work, the impact of internal reflectors on the trays distiller performance was investigated. Besides, the influence of painting the surfaces of the solar still by the mixture of black paint and copper oxide (CuO) nanoparticles was studied. This is to enhance the heat transfer characteristics between the basin surfaces and water. Finally, the impact of using the paraffin wax mixed with CuO nanoparticles as a phase change material (PCM) on the performance of trays distiller was evaluated. Experimental results revealed that the total freshwater yield of the trays distiller was improved by 57, 14, 70.7, and 108% when using reflectors, CuO nanoparticles in paint, reflectors and nano-coating, and the collection of reflectors, nano coating, and PCM with CuO nanoparticles respectively over that of the reference still. Also, the total accumulated freshwater of the conventional and trays solar stills reached 2400 and 5000 mL/m² a day, respectively. Moreover, the thermal efficiency of the trays distiller with reflectors, nano-paint coating, and PCM-CuO nanoparticles mixture was 51.5%.

130 citations

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TL;DR: In this article, a long short-term memory (LSTM) neural network model was used to forecast the freshwater yield of a stepped solar still and a conventional one, which was equipped with a copper corrugated absorber plate.

118 citations

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TL;DR: In this paper, the fundamental mechanisms and descriptions of solar collectors, which are indispensable components of solar dryers, are presented, and analysis methods typically used for the evaluation of solar collector performance, particularly energy analysis and exergy analysis, are reported.
Abstract: In this review, we present the fundamental mechanisms and descriptions of solar collectors, which are indispensable components of solar dryers. Then, analysis methods typically used for the evaluation of solar collector performance, particularly energy analysis and exergy analysis, are reported. Experimental and theoretical results from studies on the performance levels of solar air flat plate collectors are summarised as well. During indoor testing, the energy and exergy efficiencies of solar air flat plate collectors range from 30% to 79% and from 8% to 61%, respectively. Various solar collectors are described and classified, and the designs and performance levels of solar collectors with fins integrated to a fluidized bed combination of heat pump and biomass furnace are also reported. Moreover, solar air flat plate collector performances in the drying application of marine and agricultural products are presented. The energy and exergy efficiencies of the solar air flat plate collector in the drying application (outdoor testing) range from 28% to 62% and from 30% to 57%, respectively.

115 citations

Journal ArticleDOI
TL;DR: In this article, a novel light-absorbing material called hydrogel is used to enhance photothermal solar efficiency conversion by decreasing the heat loss in the heat transfer process due to the heat localization on the air-water interface.

111 citations