Impact of orientation and water depth on productivity of single-basin dual-slope solar still with Al2O3 and CuO nanoparticles

Modi, Kalpesh V.; Jani, Hardik K.; Gamit, Ilesh D.

doi:10.1007/s10973-020-09351-1

Cited by 45 publications

(9 citation statements)

References 56 publications

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“…Jani and Modi [19] have evaluated the performance of solar still by appended the circular and square cross-sectional fins on the absorber plate, and they observed improved efficiency of the solar still. Modi et al [20] have improved the solar still performance of 19.40%, 28.53% and 26.59% using Al 2 O 3 nanoparticles at water depth of 30, 20 and 10 mm, and 58.25% and 56.31% using CuO nanoparticles at water depth of 20 mm and 10 mm, respectively. The above-mentioned research works are related to singlephase nanoparticle-based nanofluid flow in a collector and its enhanced efficiency.…”

Section: Introductionmentioning

confidence: 99%

Efficiency analysis of thermosyphon solar flat plate collector with low mass concentrations of ND–Co3O4 hybrid nanofluids: an experimental study

Sundar

Misganaw

Singh

et al. 2020

J Therm Anal Calorim

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In the present study, the thermal efficiency, convective heat transfer and friction factor analysis are investigated for a flat plate solar collector with thermosyphon (natural circulation) system using water and nanodiamond-cobalt oxide hybrid nanofluids as the working fluids. The nanodiamond-cobalt oxide hybrid nanoparticles were synthesized using in situ growth and chemical co-precipitation method and characterized using X-ray diffraction, transmission electron microscope and vibrating sample magnetometer. The investigations were performed at different volume flow rates 0.56-1.35 L min −1 and various mass concentrations of 0.05-0.15%. The thermal conductivity and viscosity of nanofluids were measured experimentally at various mass concentrations and temperatures. Due to the augmented thermo-physical properties of hybrid nanofluids, the collector reached higher coefficient of heat transfer as well as improved thermal efficiency than the water data. Maximum thermal conductivity and viscosity enhancements are found to be 15.71% and 45.83% at particle loadings of 0.15% mass concentration and at a temperature of 60 °C. Results show the Nusselt number enhancement of 0.15% mass concentration of hybrid nanofluid is 21.23% with maximum friction factor penalty of 1.13 times against water data. The collector thermal efficiency is found to 59% for the case of 0.15% mass concentration of hybrid nanofluid, where the thermal efficiency of water is 48%. The empirical correlations were developed for Nusselt number and friction factor for collector with hybrid nanofluids within the deviation of ± 3%.

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Section: Introductionmentioning

confidence: 99%

Efficiency analysis of thermosyphon solar flat plate collector with low mass concentrations of ND–Co3O4 hybrid nanofluids: an experimental study

Sundar

Misganaw

Singh

et al. 2020

J Therm Anal Calorim

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“…But the time required is too large is the major drawback of this approach. Modi et al (2020) performed the water depth productivity and the impact orientation of a dual-slope solar still containing CuO and Al2O3 nanoparticles. Here, the dual-slope and dual single solar basin were fabricated.…”

Section: Summary Of Existing Literature Workmentioning

confidence: 99%

Productivity Enhancement of Solar Still using Adaptive Deep Neural Network Model

Victor

Somasundaram

Gnanadason³

2021

Preprint

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Water is considered as one among the most superabundant resources on the earth that cover 75% of the entire earth’s surface yet numerous countries faces problem due to water shortage. Desalination is considered as the most efficient process to overcome this raising clean water demand. The solar energy is considered as one of the efficient and finest resources to refine the brackish water. Therefore, this paper proposes a novel black widow particle swarm optimization based deep neural network approach to enhance the water productivity from the solar still. The main intension of the proposed BWPSO based DNN approach is to enhance the performances of DNN by employing BWPSO for optimal water production. Here, the optimal weight of the DNN is determined by utilizing BWPSO algorithm. The solar still is incorporated with a straight tube and spiral tube solar water collector. In addition to this, the study based on solar still and their experimental analysis are carried out in Coimbatore city located in Tamilnadu. The evaluation is conducted for various parameters namely glass temperature, average evaporation temperature, inlet and outlet temperature, water temperature, air temperature, yield, solar intensity, wind velocity, RMSE, MAE, MRE and EC to determine the effectiveness of the system. Also, the comparative analysis is made and the evaluation results reveal that the proposed approach outperforms various other approaches.

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“…As a result, the average temperature of water and absorber has been increased by 10.2 and 12.3%, respectively, by adding the optimum concentration of nanoparticles (20%) with black paint. Results also concluded that the total production from the solar is enhanced by 27.2, 34.2, 18.3, and 18.4% for 10, 20, 30, and 40% concentrations of concentration, respectively, compared to that of ordinary black paint [26]. Similarly, one of the researcher groups designed and made up two similar solar stills with different paints, i.e., black and white.…”

Section: Introductionmentioning

confidence: 97%

Effect of Tin Oxide/Black Paint Coating on Absorber Plate Temperature for Improved Solar Still Production: A Controlled Indoor and Outdoor Investigation

Rasachak

Khan

Kumar

et al. 2022

International Journal of Photoenergy

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The ever-increasing water stress and availability of fresh drinking water are becoming a major challenge in rural and urban communities. The current high-end and large-scale technologies are becoming way more expensive and not friendly to the environment. In this regard, solar still is becoming a prominent and promising future technology due to its environment-friendly nature, less maintenance and operational costs, and simple design. The technological challenge regarding solar still is its low distillate yield. In this study, an attempt has been made to investigate the effect of tin oxide (SnO2) on the absorption surface of solar still towards improvement in sunlight absorption, which would lead to high distillate production rates. Various concentrations of SnO2, i.e., 0.5wt%, 1 wt%, 3 wt%, 5 wt%, 7 wt%, 10 wt%, 15 wt%, and 20 wt%, have been mixed in black and applied on the absorber plate to further optimize the suitable concentration. The experiments have been performed in both indoor (simulated) and outdoor conditions. An increase in surface temperature of absorber plate has been observed with increasing concentration of SnO2 under both the indoor and outdoor conditions, which is due to high solar spectrum absorption properties of SnO2 in the ultraviolet (UV) and near to far-infrared (IR) regions. The highest surface temperature of 101.61°C has been observed for specimens containing 15 wt% SnO2 in black paint under indoor conditions at 1000W/m2 irradiation levels, which is 53.67% higher compared to bare aluminum plate and 16.91% higher compared to only black paint coated aluminum plate. On the other hand, the maximum temperature of 74.96°C has been recorded for the identical specimens containing 15 wt% SnO2 under uncontrolled outdoor conditions. The recorded temperature is 47.96% higher than the bare aluminum plate and 14.88% higher than the black paint-coated aluminum plate. The difference of maximum temperatures under indoor and outdoor conditions is due to uncontrolled outdoor conditions and convective losses.

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Impact of orientation and water depth on productivity of single-basin dual-slope solar still with Al2O3 and CuO nanoparticles

Cited by 45 publications

References 56 publications

Efficiency analysis of thermosyphon solar flat plate collector with low mass concentrations of ND–Co3O4 hybrid nanofluids: an experimental study

Efficiency analysis of thermosyphon solar flat plate collector with low mass concentrations of ND–Co3O4 hybrid nanofluids: an experimental study

Productivity Enhancement of Solar Still using Adaptive Deep Neural Network Model

Effect of Tin Oxide/Black Paint Coating on Absorber Plate Temperature for Improved Solar Still Production: A Controlled Indoor and Outdoor Investigation

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