Impact of water depth on thermal efficiency, exergy efficiency, and exergy losses of finned acrylic solar still: an experimental study

Attia, Mohammed El Hadi; Kaliyaperumal, Saravanan; Thangamuthu, Gunasekar; Ilango, R.; Mann, Suman; Santhakumar, J.; Sundararajan, Suma Christal Mary

doi:10.1007/s11356-021-17400-x

Cited by 7 publications

(3 citation statements)

References 55 publications

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“…Daily distillate yield from the finned basin solar still is found to be 18% higher than that of the reference still. Attia et al 21 studied of effect finned in acrylic solar still at different depths of salt water (1, 2, and 3 cm). The maximum daily output of finned acrylic solar still at 1, 2, and 3 cm was 5.67, 5.16, and 4.41 kg, respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of hemispherical solar distillers integrated with the red bricks filled with cement as natural thermal storage materials

Attia

Kabeel

Beggas

et al. 2023

Env Prog and Sustain Energy

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This manuscript aims to augment the production rate of drink water from the hemispherical solar distillers using red bricks filled with cement as natural low-cost reasonable storage materials. To obtain the optimal height and optimal gap distance of the red brick tiles filled with cement that achieves the highest productivity of hemispherical distillers. Three different heights of the red brick (1, 2, and 3 cm) with two different gap distances of (4 and 6 cm) were experimentally studied. Therefore, three hemispherical distillers were constructed and operated under the same climate conditions. The first is the traditional hemispherical solar distiller (THSD) which represents the reference distiller. The second is a hemispherical distiller with red brick tiles filled with cement set at a gap distance of 6 cm. The third is a hemispherical distiller with red brick tiles filled with cement set at a gap distance of 4 cm. The results presented that, the utilization of red brick tiles filled with cement with a height of 2 cm and a gap distance of 4 cm represents a good choice that achieves the highest performance of hemispherical distillers.The results showed that the utilization of red bricks filled with cement will be improved the accumulative yield from 4.3 L/m 2 /day (THSD) to 6.55 L/m 2 /day with an improvement of 52.3%. Also, using the red bricks filled with cement improved the thermal and exergy efficiencies by 51.24% and 435.5%, respectively compared to THSD.hemispherical distiller, natural low-cost storage materials, performance improvement, red bricks filled with cement, thermal and exergy efficiencies | INTRODUCTIONPure drinking water is considered one of the most important and indispensable elements to ensure the survival of all living organisms on the planet. [1][2][3] In recent years, as a result of rapid population growth, rapid industrial development, environmental pollution, and pollution of many surface waterways, especially in developing countries, the amount of fresh water suitable for human use has become insufficient. There are many countries around the world suffering from the problem of lack of fresh water. To obtain fresh water, it is necessary to treat polluted water and treatment seawater, and groundwater. Where, water treatment mainly depends on energy. Therefore, solar energy is considered one of the most acceptable alternatives for energy supply, and this is agreed upon by many researchers. [4][5][6] Therefore, the use of solar energy is an effective option Abbreviations: PCM, phase change materials; HSD & RBC, hemispherical solar distiller with red bricks filled with cement; THSD, traditional hemispherical solar distiller.

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Section: Introductionmentioning

confidence: 99%

Performance assessment of hemispherical solar distillers integrated with the red bricks filled with cement as natural thermal storage materials

Attia

Kabeel

Beggas

et al. 2023

Env Prog and Sustain Energy

Self Cite

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“…They found that yield increases with increasing concentration up to 30 g/L of phosphate grains, but it stabilizes thereafter, although with increasing phosphate grains concentrations. Attia et al 24 experimentally studied the impact of saltwater depths on the acrylic solar still with an extended surface. The highest cumulative potable water produced from the acrylic SS with fins was recorded as 5.67, 5.16, and 4.41 kg/m 2 for saltwater depth varied from 1, 2, and 3 cm, respectively.…”

Section: Introductionmentioning

confidence: 99%

Influence of high porous sponges for improving the interfacial evaporation from hemispherical solar distillers

Sathyamurthy,

Kabeel,

El Hadi Attia

et al. 2023

Sci Rep

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The present study aims to improve the palatable water production from the hemispherical cover solar distiller (HSD). To augment the palatable water produced from the hemispherical cover, a black sponge was utilized as a porous medium using different thicknesses, which augments the interfacial evaporation through the capillary effect of the water through the sponge. The rate of condensation of the hemispherical cover depends on the higher interaction of air from the ambient through wind velocity as the exposure area of the hemispherical cover is relatively higher as compared to the other traditional distillers. The rate of evaporation from the distillers depends on the interfacial materials used in the distillation unit, and this is achieved by using a highly porous black sponge to attain a higher evaporation rate. The thickness of the black porous sponge was optimized (1 to 4 cm), which was the operating parameter for better interfacial evaporation through the sponge, and the same has been compared to the conventional HSD without a porous sponge medium. Results showed a significant improvement in the evaporation rate using a porous medium as the palatable water produced from the HSD was improved by 72.29% using 3 cm as sponge thickness inside compared to the conventional HSD without the porous medium. The cumulative palatable water produced from the HSD using 3 cm as sponge thickness was found as 7150 mL/m2, whereas the conventional HSD without sponge, it was found as 4150 mL/m2. Moreover, using a porous sponge layer as an interfacial evaporation medium, the exergy and energy efficiencies were improved by about 512.87 and 70.53%, respectively. Similarly, with the influence of a porous sponge as an interfacial evaporation medium, the distilled water cost decreased by 41.67% more than the conventional HSD.

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“…The rst one had productivity of 8.285 kg/m 2 , which was 129% higher than plain stepped stills without any modi cations (3.615 kg/m 2 ). Attia et al [21] investigated the exergy/ thermal analysis of nned in acrylic solar stills at various saltwater depths (1 cm, 2 cm, and 3 cm). The exergy e ciency of the nned acrylic SS at 1 cm, 2 cm, and 3 cm is 3.83, 3.22, and 2.7%, respectively, according to the ndings, while the thermal e ciency is 42.54, 37.92, and 31.2%.…”

Section: Introductionmentioning

confidence: 99%

A comparative assessment of innovative hemispherical solar distillers with cylindrical and conical fins: an experimental approach

Attia,

Kabeel,

Abdelgaied

et al. 2023

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Although the in uence of ns on a basin's at absorber will improve thermal performance and distillate production due to the increased heat transfer areas, many researchers are still interested in the problem of shading caused by ns, which reduces distiller productivity for some con gurations of the ns designs. To obtain the best n con gurations that achieve the lowest shading effects and highest performance of hemispherical solar stills. The in uences of absorbent cement layer with two types of ns (cylindrical and conical ns) with a diameter of 1.5 cm and a height of 3 cm at different gap spacing (3, 3.75, and 4.5 cm) were studied. To achieve these; three hemispherical solar stills were tested at same weather conditions, rst is the conventional hemispherical still without ns (CHSWF) which represent the reference case. Second, is the cylindrical nned hemispherical still with gap spacing 3, 3.75, and 4.5 cm (CyFHS). Third, is the conical nned hemispherical still with gap spacing of 3, 3.75, and 4.5 cm (CoFHS).The results showed that, the cylindrical nned hemispherical still (CyFHS) productivity values are 5.55, 6.00, and 6.70 kg/m 2 , respectively, while conical nned hemispherical still (CoFHS) productivity values are 6.20, 6.65, and 7.15 kg/m 2 at gap spacing of 3, 3.75, and 4.5 cm, respectively compared to 4.20 kg/m 2 that was produced by CHSWF. The results showed that the use of conical ns achieves the highest performance of hemispherical still as a result of reducing the effect of shading. Whereas, the best con guration that achieves the highest performance is the use of conical ns with a gap spacing of 4.5 cm, where the rate of improvement is 70.24% compared to CHSWF

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Impact of water depth on thermal efficiency, exergy efficiency, and exergy losses of finned acrylic solar still: an experimental study

Cited by 7 publications

References 55 publications

Performance assessment of hemispherical solar distillers integrated with the red bricks filled with cement as natural thermal storage materials

Performance assessment of hemispherical solar distillers integrated with the red bricks filled with cement as natural thermal storage materials

Influence of high porous sponges for improving the interfacial evaporation from hemispherical solar distillers

A comparative assessment of innovative hemispherical solar distillers with cylindrical and conical fins: an experimental approach

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