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Double-insulated porous PDMS sponge for heat-localized solar evaporative seawater desalination SCIE SCOPUS

Title
Double-insulated porous PDMS sponge for heat-localized solar evaporative seawater desalination
Authors
Lim H.W.Lee S.J.
Date Issued
2022-03
Publisher
Elsevier B.V.
Abstract
Seawater desalination has a strong potential for solving global water shortage problem, and solar-based evaporative desalination technology has received increased attention. For successful solar steam generation (SSG), solar energy should be utilized in a balanced manner through heat localization. In this study, we propose a sucrose‑carbonized sugar-templating polydimethylsiloxane (PDMS) sponge sealed with ethyl vinyl acetate (EVA) foam, called as C-STP sponge. The C-STP sponge consists of a double-layered porous structure with carbonaceous material on the top surface. The C-STP sponge exhibits high SSG performance in long-term operation with anti-salt fouling ability by its self-cleaning feature. Several factors governing the C-STP sponge were optimized by examining two different kinds of sugar with different porosity levels and carbonized layer thicknesses. The porous C-STP sponge has numerous micropores caused by sugar-leaching, thereby decreasing the thermal conductivity to improve the evaporation rate. The heat localization aspects of PDMS were also investigated. The highest solar evaporation was 1.53 kg m
URI
https://oasis.postech.ac.kr/handle/2014.oak/113031
DOI
10.1016/j.desal.2021.115540
ISSN
0011-9164
Article Type
Article
Citation
Desalination, vol. 526, 2022-03
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이상준LEE, SANG JOON
Dept of Mechanical Enginrg
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