Metal fins efficacy on stepped solar still performance: An experimental study

Khalili, Mohammad; Taheri, M.; Nourali, Ali

doi:10.1016/j.desal.2023.116706

Cited by 16 publications

(2 citation statements)

References 23 publications

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“…The experimental results revealed that decreasing the sliding angle boosted the production rate by 45%; it also increases when the surface became super hydrophilic, but the sliding angle was a better predictor. Khalili et al 14 conducted a study with metal fins used on the absorber surface in this investigation to maximize radiant energy absorption. The investigation's input parameters include the inlet flow rate (100, 150, and 200 mL/min), the quantity of fins (1, 2, and 3 fins on each step), angle of fins (30°, 0°, and +30°), height of fins (1, 2, and 3 fins on each step), and fin material (copper, aluminum, and galvanized steel).…”

Section: Introductionmentioning

confidence: 99%

CFD and artificial neural network‐based modeling approach for the annual performance assessment of single slope single basin solar still

Verma,

Singh

2024

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Thermal performance modeling and performance prediction of a solar still which is single basin single slope (SBSS) for the typical climatic condition of India at Jalandhar (31.3260° N, 75.5762° E) is analyzed in the present work. A numerical investigation of an SBSS solar still is conducted during the month of June 2022 using the ANSYS Fluent 2021 computational fluid dynamics (CFD) package and artificial neural network (ANN) prediction model. A user define function is written and used in fluent to formulate the problem with 9‐h solar radiation flux, on solar still glass surface. The simulation outcomes for surface temperature at three different water depths were compared with the existing experimental study. Water temperature and productivity of freshwater were well aligned with experimental results. Three‐dimensional domain is used with a two‐phase volume of fluid model for the condensation and evaporation processes in a solar still. The performance evaluation parameters, that is, coefficients of convective, evaporative, and radiative heat transfer, different temperature values, distillation output, and system efficiency were calculated numerically. The parametric analysis is expanded, and an ANN model in MATLAB R2020a is utilized to estimate yearly performance and reduce the high computational cost of numerical analysis. The data for solar radiation, design, and operational parameters are fed into the ANN model, and as a result, the water temperature at various depths is computed. The ANN model was trained using numerical results computed for the month of June and tested, showing 99.7% accuracy with CFD results. The annual performance of the solar still was evaluated using ANN models for 9 h of the day and with different boundary conditions. To decrease computational and experimental costs, the recommended technique of combined CFD and ANN models for computing the annual performance of (SBSS) solar still is the most effective option.

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Section: Introductionmentioning

confidence: 99%

CFD and artificial neural network‐based modeling approach for the annual performance assessment of single slope single basin solar still

Verma,

Singh

2024

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“…LC-RWSS, especially with counterclockwise rotation, exhibited superior productivity, enhanced further with graphene quantum dots nanofluid, offering a promising solution to freshwater scarcity at reduced costs. In recent research by Khalili et al (2023), stepped solar stills' absorber surfaces were examined with a focus on enhancing their performance. Metal fins were introduced to augment radiant energy absorption.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of snail shell biomaterials in solar still for clean water production: nature-inspired innovation for sustainability

Dhivagar,

Suraparaju,

Atamurotov

et al. 2024

Water Science &Amp; Technology

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In this current investigation, the experimental performance of a solar still basin was significantly enhanced by incorporating snail shell biomaterials. The outcomes of the snail shell-augmented solar still basin (SSSS) are compared with those of a conventional solar still (CSS). The utilization of snail shells proved to facilitate the reduction of saline water and enhance its temperature, thereby improving the productivity of the SSSS. Cumulatively, the SSSS productivity was improved by 4.3% over CSS. Furthermore, the SSSS outperformed in energy and exergy efficiency of CSS by 4.5 and 3.5%, respectively. Economically, the cost per liter of distillate (CPL) for the CSS was 3.4% higher than SSSS. Moreover, the SSSS showed a shorter estimated payback period (PBP) of 141 days which was 6 days less than CSS. Considering the environmental impact, the observed CO2 emissions from the SSSS were approximately 14.6% higher than CSS over its 10-year lifespan. Notably, the SSSS exhibited a substantial increase in the estimated carbon credit earned (CCE) compared to the CSS. Ultimately, the research underscores the efficacy of incorporating snail shells into solar still basins as a commendable approach to organic waste management, offering economic benefits without compromising environmental considerations.

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