Enhancement of Yield in Single Slope Solar Still by Composite Heat Storage Material—Experimental and Thermo-Economic Assessment

Sampathkumar, Arivazhagan; Suraparaju, Subbarama Kousik; Natarajan, Sendhil Kumar

doi:10.1115/1.4055100

Cited by 30 publications

(5 citation statements)

References 48 publications

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“…The water and absorber temperatures of solar still with PCM are significantly improved by about 10% using RT-58 under the absorber basin. 7 Solar still with ball marbles 36.67 1.9 5.7 Suraparaju and Natarajan 30 Solar still with PCM and natural fibres 126.90 1.6 3.6 Suraparaju and Natarajan 37 Solar still with hollow fins & PCM 41.67 2.3 6.3 Sampathkumar et al 49 Solar still with composite PCM 64% 2.28 6.2 Modi et al 50 Solar still with nanofluids 58.25 1.5 6.9 Nayi and Modi 51 Pyramid solar still with energy storage 11.35 2.6 11.3…”

Section: Discussionmentioning

confidence: 99%

Experimental investigation of a solar still combined with phase change material (RT58) in southern India climatic conditions

Sahu

Natarajan²,

K³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Water is a vital component of human survival. Drinking water is scarce in several large provinces around the world. Only saline water, which may be demineralised and utilised for drinking, is available in this situation. For extended journeys, normal water is required in boats and submarines. Self–demineralised equipment is usually installed in vehicles, but it consumes more conventional gasoline and is, therefore, more expensive. To address this problem, solar still can be used, which has the primary aim of converting seawater into consumable desalinated water. In this work, a solar still with phase change material (PCM) – RT58 which have better thermo-physical properties has been incorporated and investigated for thermo-economic performance. It is observed from the results that the RT-58 PCM achieved a greater yield compared to conventional solar still (CSS) without any PCM as an energy storage material. The productivity of solar still with PCM is increased by 46% relative to CSS. Also, the economic analysis revealed that the solar still with PCM is more economically viable than CSS in terms of cost per litre production of freshwater and payback period.

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Section: Discussionmentioning

confidence: 99%

Experimental investigation of a solar still combined with phase change material (RT58) in southern India climatic conditions

Sahu

Natarajan²,

K³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…These attributes render it a relevant preference for utilization in machining operations [34]. A limited number of researchers have explored the incorporation of nanoparticles to improve thermal properties [35,36].…”

Section: Introductionmentioning

confidence: 99%

Assessing thermophysical properties of Nanostructured Cellulose Nano Crystal (CNC) and Graphene Nanoplatelets (GNP) Additives in Palm Oil-Based Heat Transfer Fluid

Kulandaivel,

Samykano,

Wai Keng

et al. 2024

E3S Web of Conf.

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This study explores the examination of the thermophysical characteristics of eco-friendly CNC-Palm oil, GNP-Palm oil and CNC/GNP-palm oil mono and hybrid nanofluids. The stability assessment involves a comprehensive analysis, incorporating visual observations and thermal conductivity assessments. Notably, it was observed that an elevated proportion of hybrid mixture contributed to the enhanced stability of the nanosuspension, ensuring the uniform dispersion of nanomaterials within the base liquid for an extended period. The results indicate that hybrid nanofluids containing CNC/GNP and formulated with palm oil exhibit substantial stability. A comprehensive visual examination over an impressive 30-day duration reveals minimal accumulation, underscoring the enduring stability of these nanofluids. The study also examines crucial thermal and physical properties, including thermal conductivity and viscosity about temperature. The most significant enhancement was witnessed in thermal conductivity, achieving a noteworthy 100% increase in the 0.1w/v% concentrated CNC/GNP/Palm Oil hybrid nanofluid at 70°C, demonstrating a significant improvement compared to the base fluid. Furthermore, there are noticeable increments in viscosity, albeit with a more modest enhancement compared to thermal conductivity. These outcomes suggest a direct relationship between the increased concentrations can improve stability and thermal conductivity. This study contributes valuable insights into utilizing CNC/GNP in nanofluid applications, with implications for fields requiring enhanced thermal performance and fluid stability.

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“…Sampathkumar et al 28 conducted the impact of a mixture of beach sand with paraffin wax as hybrid storage materials on the yield of solar distillers. They found that the yield improved from 1820 to 2950 mL/m 2 for using hybrid storage materials.…”

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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Enhancement of Yield in Single Slope Solar Still by Composite Heat Storage Material—Experimental and Thermo-Economic Assessment

Cited by 30 publications

References 48 publications

Experimental investigation of a solar still combined with phase change material (RT58) in southern India climatic conditions

Experimental investigation of a solar still combined with phase change material (RT58) in southern India climatic conditions

Assessing thermophysical properties of Nanostructured Cellulose Nano Crystal (CNC) and Graphene Nanoplatelets (GNP) Additives in Palm Oil-Based Heat Transfer Fluid

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

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