کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6728700 | 1428924 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical, thermal, and energy performance of advanced polycarbonate systems with granular aerogel
ترجمه فارسی عنوان
عملکرد نوری، حرارتی و انرژی سیستم های پیشرفته پلی کربنات با آئروژل دانه ای
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کلمات کلیدی
آئروژل دانه ای سیلیکا، خواص نوری، خواص حرارتی، سیستم های لعاب پیشرفته پانل های پلی کربنات، ادغام ساختمان، عملکرد انرژی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Polycarbonate panels could be considered as a suitable and cheap solution for walls, roofs, and sheds in non-residential buildings and, at the same time, granular silica aerogel is one of the most promising nano-materials for energy saving in buildings. In the paper, three types of advanced multiwall PC panels (thickness 16, 25, and 40â¯mm) with translucent granular aerogel were investigated by experimental (thermal and optical) and numerical characterization. By comparing thermal performance of air and aerogel-filled PC systems, it can be noticed that the impact of the aerogel is remarkable: the reduction in U-value is 46%-68%, depending on the aerogel layer thickness. U-value is 1.4â¯W/m2K for the 16â¯mm thickness sample and it is 0.6â¯W/m2K when the thickness increases up to 40â¯mm. The systems keep their performance in horizontal position, when they are used as roofs. Light transmittance is 0.61 and 0.42 for 16â¯mm and 40â¯mm respectively and the reduction with respect to air-filled panels is acceptable (15%) for 16â¯mm and significant (40%) for 40â¯mm thickness. The aerogel has also a remarkable impact on the reflectance spectrum, especially between 400 and 1400â¯nm. The solar factor is 0.58 for 25â¯mm thickness, quite similar to the low-e glazing one. Finally, energy simulations for a case study showed that aerogel-filled PC systems outperform conventional double glazing systems both for heating and cooling energy demands. However, when compared to low-e glazings, the benefits of the translucent material (also considering the highest thickness) in the interspace are lower for heating and negligible for cooling energy demands. The aerogel-filled polycarbonate systems could be a valid solution for non-residential buildings, enhancing the thermal performance and the light control of the building envelope, especially when they are used as roofs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 166, 1 May 2018, Pages 407-417
Journal: Energy and Buildings - Volume 166, 1 May 2018, Pages 407-417
نویسندگان
Elisa Moretti, Michele Zinzi, Francesca Merli, Cinzia Buratti,