Combined enhancement of evaporation and condensation rates in the solar still for augmenting the freshwater productivity using energy storage and natural fibres

Suraparaju, Subbarama Kousik; Natarajan, Sendhil Kumar

doi:10.2166/aqua.2022.017

Cited by 14 publications

(8 citation statements)

References 35 publications

(24 reference statements)

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“…Solar still performance was analyzed both experimentally and theoretically [3]. The experimental and theoretical values were completely consistent with one another [4]. The research also showed that solar intensity and the temperature of the incoming water had a direct bearing on the effectiveness of instantaneous stills.…”

Section: Introductionmentioning

confidence: 53%

Enhancing efficiency and cost-effectiveness of solar stills through natural fiber integration

Ravivarman,

Madhavan,

Kalaiyarasan

et al. 2023

E3S Web Conf.

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Various enhancements to solar stills aim to increase their output of fresh water. This research experimentally compared the efficiency of two solar stills (SS) in terms of producing fresh water. The conventional solar still (CSS) was compared to the Coconut leaf sheath single slope solar still. Natural fibres were used to fill the basin, increasing the surface area in contact with the sun and, by extension, the rate of evaporation. Utilize its capillary effect while simultaneously putting it to use as a heat sink (thermal storage material). We calculated the exergy and thermal energy efficiency of both systems and the associated costs. Daily accumulative freshwater productivity was found to be 5170.8 gm/m2 when employing natural fibre, a 45.8 % improvement over the usual method. Solar stills made from natural fibres were discovered to have daily thermal energy efficiencies of 46.8 % and exergy efficiencies of 5 %, while CSS systems achieved 33.8 and 3.2 %, respectively. When compared to a standard solar still, which costs ₹9.68 every litre of water produced, a solar still made with natural fibre reduces that cost to just ₹6.64 per litre.

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Section: Introductionmentioning

confidence: 53%

Enhancing efficiency and cost-effectiveness of solar stills through natural fiber integration

Ravivarman,

Madhavan,

Kalaiyarasan

et al. 2023

E3S Web Conf.

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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%

“…Furthermore, due to its high thermal conductivity, an internal heat absorbing surface of 0.04 mm aluminium sheet coated with the selective coating is chosen. 30,31 In addition, suitable precautions are taken to prevent water leaks. The experimental setup is developed using traditional fabrication and painting techniques.…”

Section: Methodsmentioning

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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“…The uncertainties in measuring instruments are estimated using the following relation (Elminshawy et al , 2022; Suraparaju and Natarajan, 2022b): …”

Section: Methodsmentioning

confidence: 99%

Performance analysis of a novel solar cogeneration system for generating potable water and electricity

Suraparaju¹,

K.²,

Jayan

et al. 2022

WJE

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Purpose The utilisation of renewable energy sources for generating electricity and potable water is one of the most sustainable approaches in the current scenario. Therefore, the current research aims to design and develop a novel co-generation system to address the electricity and potable water needs of rural areas. Design/methodology/approach The cogeneration system mainly consists of a solar parabolic dish concentrator (SPDC) system with a concentrated photo-voltaic module at the receiver for electricity generation. It is further integrated with a low-temperature thermal desalination (LTTD) system for generating potable water. Also, a novel corn cob filtration system is introduced for the pre-treatment to reduce the salt content in seawater before circulating it into the receiver of the SPDC system. The designed novel co-generation system has been numerically and experimentally tested to analyse the performance at Karaikal, U.T. of Puducherry, India. Findings Because of the pre-treatment with a corn cob, the scale formation in the pipes of the SPDC system is significantly reduced, which enhances the efficiency of the system. It is observed that the conductivity, pH and TDS of seawater are reduced significantly after the pre-treatment by the corncob filtration system. Also, the integrated system is capable of generating 6–8 litres of potable water per day. Originality/value The integration of the corncob filtration system reduced the scaling formation compared to the general circulation of water in the hoses. Also, the integrated SPDC and LTTD systems are comparatively economical to generate higher yields of clean water than solar stills.

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Combined enhancement of evaporation and condensation rates in the solar still for augmenting the freshwater productivity using energy storage and natural fibres

Cited by 14 publications

References 35 publications

Enhancing efficiency and cost-effectiveness of solar stills through natural fiber integration

Enhancing efficiency and cost-effectiveness of solar stills through natural fiber integration

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

Performance analysis of a novel solar cogeneration system for generating potable water and electricity

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