کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7044947 | 1457088 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient solar water vapor generation enabled by water-absorbing polypyrrole coated cotton fabric with enhanced heat localization
ترجمه فارسی عنوان
تولید بخار آب خورشیدی کارآمد با استفاده از آب جذب پلیپیرلول پنبه پوشش داده شده با محلول حرارت افزایش یافته است
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Solar-driven water evaporation is a simple and feasible technique in addressing the global challenge of freshwater scarcity. The conventional water vapor generation is a bulk heating process, resulting in a relatively low efficiency due to unnecessary thermal energy loss. In this work, we propose an efficient water evaporation system with enhanced localized heating which was designed by using the polypyrrole (PPy) coated cotton fabric in conjunction with a floating pore-closed polystyrene (PS) foam. The hydrophilic PPy/cotton with a broadband light absorption was obtained via a facile in-situ polymerization, and it could absorb and convert most of the incident light to heat for effective interfacial water evaporation. Meanwhile, the PS foam served as not only a supporting material but also an excellent heat barrier to restrain heat transmission from the photothermal material surface to the bulk water. The PPy/cotton-foam system can achieve a solar thermal conversion efficiency of 82.4% under 1â¯kW/m2 illumination with an evaporation rate as high as 1.2â¯kgâ¯mâ2 hâ1. This solar vapor generator also showed reliable reusability after 30 cycling experiments under 1â¯kW/m2 solar illumination. All these results indicate the designed interfacial water evaporation system is helpful to mitigate the freshwater shortage issue.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 141, August 2018, Pages 406-412
Journal: Applied Thermal Engineering - Volume 141, August 2018, Pages 406-412
نویسندگان
Dandan Hao, Yudi Yang, Bi Xu, Zaisheng Cai,