High efficient solar evaporation by airing multifunctional textile

Peng, Guilong; Deng, Song; Sharshir, Swellam W.; Ma, Dengke; Kabeel, A.E.; Yang, Nuo

doi:10.1016/j.ijheatmasstransfer.2019.118866

Cited by 62 publications

(22 citation statements)

References 62 publications

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“…This is because that, with the optimized thermal and material design, high efficiency can be obtained for no matter high or low solar intensity as reported in many works. [25][26][27] Therefore, solar intensity was not important and similar to a random descriptor. Herein, the random descriptor is a set of random data which has no relationship to the energy efficiency and is used as a benchmark.…”

Section: Results Of Machine Learning Algorithmsmentioning

confidence: 98%

The Weighted Values of Solar Evaporation’s Environment Factors Obtained by Machine Learning

Wang¹,

Peng²,

Sharshir³

et al. 2021

ES Mater. Manuf.

Self Cite

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Enhancing the efficiency of solar still is important for solar stills. In this study, the weighted values of environment factors (descriptors) on the efficiency of solar evaporation are obtained by using a machine learning algorithm, random forest. To verify the advancement between random forest and mathematical data analysis, two traditional methods, pair wise plots and Pearson correlation analysis, are conducted for comparison. Experimental data are obtained from around 100 articles since 2014. The results indicated that traditional methods failed at obtaining reasonable weighted values, while random forest is competent. It is found that thermal design is the most significant descriptors to obtain a high efficiency. The lack of complete dataset is the main challenge for more in-depth and comprehensive analysis. This work may promote the enhancement of production and efficiency of solar stills.

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Section: Results Of Machine Learning Algorithmsmentioning

confidence: 98%

The Weighted Values of Solar Evaporation’s Environment Factors Obtained by Machine Learning

Wang¹,

Peng²,

Sharshir³

et al. 2021

ES Mater. Manuf.

Self Cite

View full text Add to dashboard Cite

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“…Another approach is to optimize the structure of the solar evaporator, which can ensure high sunlight capture [ 8,33–35 ] and heat loss reduction. [ 8,33–36 ] Inspired by the auricle structure with a wide mouth and narrow bottom, 3D conical and cup structures achieve higher light absorptivity by promoting the multiple reflections of light and recovering the heat radiation within it. [ 33,34 ] The 3D cup‐shaped solar evaporator achieves ≈100% energy efficiency in solar steam generation.…”

Section: Introductionmentioning

confidence: 99%

Simple Hierarchical Interface Design Strategy for Accelerating Solar Evaporation

Wang

et al. 2020

Macro Materials & Eng

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Interface design is an efficient way to improve the steam generation performance of solar evaporators. Accompanied with the formation of cellulose nanofiber/polylactic acid/polyaniline (PANI) hybrid aerogel (HA) by Pickering emulsion and in situ polymerization, this paper proposes a new perspective of hierarchical interface design strategy to accelerate the water evaporation driven by solar energy. By changing the concentration and type of doped acid, the distribution gap of different PANI forms in HA can be microscopically designed. PANI nanoclusters with smaller gaps facilitate HA to achieve an improved light absorption, photothermal conversion capability and steam generation rate. Moreover, macro interface design introduces hemispherical depression structures to the HA surface through a simple mold. These recessed surfaces not only increase the light absorption by increasing the multiple reflections and refractions of light on the recesses, but also recover part of the heat radiation loss to the environment. A higher evaporation rate of 1.65 kg m−2 h−1 with a steam generation efficiency of 94.6% is achieved under the irradiation of 1 Sun (100 mw cm−2). Finally, HAs have strong purification ability for various raw water, and are promising in terms of their application potential in the field of energy conversion.

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“…[1][2][3][4][5] The performance of the conventional solar still (CSS) was improved by using pumice stones, 6 gravel, 7 absorbent materials, 8 black color sponge, 9 integration with another solar still, 10 and using nanoparticles/fluids. [11][12][13][14][15][16][17][18][19][20] A novel portable thermoelectric desalination system has been researched by Hayden et al 21 In their work, thermoelectric material (TEM) was used to augment the condensation and evaporation rate. The novel desalination system produced a maximum hourly production of 678 mL/m 2 .…”

Section: Introductionmentioning

confidence: 99%

“…The desalination process using nonrenewable energy sources causes greenhouse gas emanation, which causes ecological contamination but leads to a sustainable power source as a substitute for powering the units 1‐5 . The performance of the conventional solar still (CSS) was improved by using pumice stones, 6 gravel, 7 absorbent materials, 8 black color sponge, 9 integration with another solar still, 10 and using nanoparticles/fluids 11‐20 …”

Section: Introductionmentioning

confidence: 99%

A comparative study of 3E (energy, exergy, and economy) analysis of various solar stills

Manokar

Vimala

Winston³

et al. 2020

Heat Trans

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In this paper, an experimental study of the conventional solar still (CSS), the conventional solar still with glass cooling (CSSGC), the conventional solar still with basin heating (CSSBH), and the conventional solar still with glass cooling and basin heating (CSSGCBH) was carried out on the basis of the distilled water production, the energy efficiency (EnE), the exergy efficiency (ExE), and economic analysis. The CSSGC and CSSBH contain Peltier modules for cooling the glass and heating the basin. The evaporative heat transfer coefficient for all the experimental stills was calculated. The values of daily distilled water production from the CSSGCBH, CSSBH, CSSGC, and CSS were 4.56, 3.79, 2.49, and 1.89 kg/m 2 , respectively. The daily distilled yield of the CSSBH and CSSGCBH were increased by 58.55% and 50.13%, respectively, as compared with the CSS. Moreover, the daily EnE and ExE of the CSSGCBH were 27.03% and 3.5%, respectively, whereas the EnE and ExE of the CSS were 10.88% and 1.3%, respectively. Furthermore, the cost of distilled water Abbreviations: CSS, conventional solar still; CSSBH, conventional solar still with basin heating; CSSGC, conventional solar still with glass cooling; CSSGCBH, conventional solar still with glass cooling and basin heating; EHTC, evaporative heat transfer coefficient; EnE, energy efficiency; ExE, exergy efficiency; T w − T g , temperature difference between the water and glass cover.

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High efficient solar evaporation by airing multifunctional textile

Cited by 62 publications

References 62 publications

The Weighted Values of Solar Evaporation’s Environment Factors Obtained by Machine Learning

The Weighted Values of Solar Evaporation’s Environment Factors Obtained by Machine Learning

Simple Hierarchical Interface Design Strategy for Accelerating Solar Evaporation

A comparative study of 3E (energy, exergy, and economy) analysis of various solar stills

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