Heat transfer coefficients and productivity of a single slope single basin solar still in Indian climatic condition: Experimental and theoretical comparison

Agrawal, Abhay; Rana, R.S.; Srivastava, Pankaj Kumar

doi:10.1016/j.reffit.2017.05.003

Cited by 70 publications

(48 citation statements)

References 33 publications

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“…Later, the developed model was used to simulate the effect of water depth on the performance of a generic solar still with and without the FRL. Effect of water depth on the performance of the single-slope solar still was studied by a few researchers, e.g., References [9,[49][50][51][52]. None of the numerical models until now studied the effect of the point-focused refraction-based solar enhancement.…”

Section: Referencementioning

confidence: 99%

“…Hence, mathematical modeling is an attractive alternative to investigate and develop better designs for solar stills under various operational parameters. The present model employed equations developed by Dunkle in Reference [52][53][54] and were analyzed using a MATLAB code and EXCEL spreadsheets. Various assumptions were made to simplify the analysis:…”

Section: Numerical Modelmentioning

confidence: 99%

“…Initial glass temperature, initial basin temperature, and initial water temperature are provided as input parameters. Partial vapor pressure, P g , and water pressure, P w , in a still can be obtained using the following equations, Reference [52][53][54]:…”

Section: Internal Heat Transfermentioning

confidence: 99%

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A Thermal Model for Predicting the Performance of a Solar Still with Fresnel Lens

Johnson

Park

et al. 2019

Water

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This study presents a theoretical model to simulate the temperatures and productivity of a single-slope, single-basin solar still when an external solar enhancement is used. Experiments were performed in the New Mexico region (32.3199° N, 106.7637° W) to validate the numerical model. A point focusing Fresnel lens was used in the experiments to enhance the solar input. It was found that a significant rise in the productivity of the still was achieved with the Fresnel lens. Parametric study by varying the water depth showed the Fresnel lens was more effective for larger water depths. In addition, the Fresnel lens can aid in improving the overall efficiency of the solar still.

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Section: Referencementioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

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A Thermal Model for Predicting the Performance of a Solar Still with Fresnel Lens

Johnson

Park

et al. 2019

Water

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“…In single slope solar stills, hourly distillate output per unit area of glass [11] is given by 3600 ⁄ Kg/m 2 -hr.…”

Section: Governing Equationsmentioning

confidence: 99%

Experimental study of self-sustainable hybrid solar photovoltaic cleaning mechanism coupled with water distillation unit

Guptaa¹,

Katakam²,

Aligireddy³

et al. 2019

Vib. proced.

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In the present research work a novel self-sustainable hybrid solar photovoltaic cleaning mechanism coupled with water distillation unit has been proposed. The experiments were conducted on the PV (photovoltaic) modules at Bennett University, Greater Noida A-block terrace from 7th to 13th October, 2019. Post installation, the average efficiencies of the solar PV module system with and without cleaning were compared to obtain a hike by 1.34 %. The water used for cleaning was recycled using a single slope basin type solar still which indicated a working efficiency of 67.94 %. On an average the solar still yielded 5.3 Litres of pure water every day during the experiment with a TDS (total dissolved solids) level of 104 ppm.

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“…They concluded that the present designs are inappropriate and need further enhancement. Agrawal et al [54] presented a comparison of experimental and theoretical results obtained for a single slope solar still at different basin water depth. It was reaffirmed that the water depth has an inverse effect on productivity as well as efficiency of solar still.…”

Section: Introductionmentioning

confidence: 99%

Effect of specific height on productivity and thermal efficiency of a solar still: An experimental approach under indoor environment

Jamil¹,

Akhtar²

2019

Env Prog and Sustain Energy

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A novel experimental approach is presented where studies have been conducted on a solar still at four specific heights in the range of 0.266–0.341 m (in steps of 0.025 m) keeping other dimensions constant. Performance of solar still is established under indoor environment to suppress meteorological factors. Uniform heat was supplied to the solar still through flat plate‐type electrical heaters. For each specific height, the performance of the solar still was evaluated at five heat fluxes (600–1000 W/m2 in steps of 100 W). Performance of solar still at different specific heights was compared in terms of operating temperatures, productivity, and efficiency. It was found that reduction in specific height enhances distillate productivity as well as thermal efficiency of the solar still due to reduction in cavity volume and an increase in average operating temperature. An increase of in daily distillate yield of 89.44% (at 600 W/m2), 56.07% (at 700 W/m2), 28.50% (at 800 W/m2), 38.60% (at 900 W/m2), and 37.38% (at 1000 W/m2) between Case 1 to Case 4 was observed. Further, between Case 1 and Case 4, the thermal efficiency increased from 27.29 to 46.18%, 32.73 to 51.06%, 36.82 to 52.17%, 41.25 to 56.79%, and 42.55 to 57.50% at 600, 700, 800, 900, and 1000 W, respectively. Results demonstrate that for a particular specific height the total daily productivity increases linearly with heat flux. Correlation for estimating thermal efficiency of solar still is proposed in terms of the aspect ratio and input power. © 2019 American Institute of Chemical Engineers Environ Prog, 38: e13227, 2019

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Heat transfer coefficients and productivity of a single slope single basin solar still in Indian climatic condition: Experimental and theoretical comparison

Cited by 70 publications

References 33 publications

A Thermal Model for Predicting the Performance of a Solar Still with Fresnel Lens

A Thermal Model for Predicting the Performance of a Solar Still with Fresnel Lens

Experimental study of self-sustainable hybrid solar photovoltaic cleaning mechanism coupled with water distillation unit

Effect of specific height on productivity and thermal efficiency of a solar still: An experimental approach under indoor environment

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