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Title: | Updates on evaporation and condensation methods for the performance improvement of solar stills | Authors: | Fu, He Dai, Min Song, Hanwen Hou, Xiaoting Riaz, Fahid Li, Shuai Yang, Ke Ali, Imran Peng, Changsheng Sultan, Muhammad |
Keywords: | Condensation rate Evaporation rate Productivity enhancement Review Solar still |
Issue Date: | 28-Oct-2021 | Publisher: | MDPI | Citation: | Fu, He, Dai, Min, Song, Hanwen, Hou, Xiaoting, Riaz, Fahid, Li, Shuai, Yang, Ke, Ali, Imran, Peng, Changsheng, Sultan, Muhammad (2021-10-28). Updates on evaporation and condensation methods for the performance improvement of solar stills. Energies 14 (21) : 7050. ScholarBank@NUS Repository. https://doi.org/10.3390/en14217050 | Rights: | Attribution 4.0 International | Abstract: | Solar still, a small equipment using evaporation and condensation processes to get clean water, is expected to be widely used for sea/brackish water desalination, water purification, and wastewater treatment because of its convenient carrying, friendly environment, and low energy consumption. In recent years, considerable progress has been made in improving the productivity of solar still. This paper will reclassify the methods to improve the solar still by elevating the evaporation rate and condensation rate. The main methods increasing evaporation rate are as follows: (i) adding heat storage materials; (ii) using nanoparticles; (iii) changing structure of the absorption plate; and (iv) using photothermal materials. The primary methods increasing the condensation rate are as follows: (i) cooling the condensing surface; (ii) increasing the condensation area; (iii) changing the wettability of the condensing surface; and (iv) using a separate condenser. The advantages and disadvantages of each method are compared. Furthermore, this paper includes an economic analysis of current solar stills and a forecast of future developments. The freshwater cost of solar still is in the range of about USD 0.0061–0.277/L, which provides reference and direction for future re-searching solar stills on their low cost and high productivity. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. | Source Title: | Energies | URI: | https://scholarbank.nus.edu.sg/handle/10635/232791 | ISSN: | 1996-1073 | DOI: | 10.3390/en14217050 | Rights: | Attribution 4.0 International |
Appears in Collections: | Elements Staff Publications |
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