کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11031056 | 1646086 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Absorber materials based on polymer nanocomposites containing silver nanoparticles for solar thermal collectors
ترجمه فارسی عنوان
مواد جاذب بر اساس نانوکامپوزیت های پلیمری حاوی نانوذرات نقره برای جمع کننده های حرارتی خورشیدی
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کلمات کلیدی
کلکتورهای حرارتی خورشیدی، مواد جاذب، نانوکامپوزیتهای پلیمری، نانوذرات نقره،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
This study describes the synthesis and characterization of polymer-based nanocomposites to fabricate absorber materials for solar thermal collectors. Heat generation by nanosized silver particles (NSP) under irradiation with light of appropriate wavelength is exploited for an efficient harvesting of solar energy. NSP were synthesized by reduction of silver nitrate (AgNO3) in a methacrylate resin. The photothermal conversion of solar energy into heat is optimized by increasing the overlap between the plasmonic band of the NSP and the spectral emission of the sun. Thus, the synthesis conditions were adjusted in order to broaden the plasmon absorption band of the resultant NSP. The UV-vis spectra of suspensions containing 300â¯ppm NSP exhibited a broad absorption band in the range between 360 and 1100â¯nm with three absorption peaks at 335, 440, and 700â¯nm. These absorption bands are associated to the presence of triangular NSP, which was confirmed by TEM microscopy. The resins containing NSP were activated with benzoyl peroxide and polymerized after 20â¯min at 80â¯Â°C. The photothermal conversion effect of the nanocomposites was assessed by monitoring the temperature increase with fine thermocouples embedded in 2-mm thick specimens during irradiation with light of different wavelength. The temperature reached during irradiation of nanocomposites showing a very broad absorption band was 115â¯Â°C while that of the nanocomposites exhibiting a single peak was 102â¯Â°C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 174, 1 November 2018, Pages 640-647
Journal: Solar Energy - Volume 174, 1 November 2018, Pages 640-647
نویسندگان
Silvana V. Asmussen, Claudia I. Vallo,