کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10128787 | 1645147 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal and microstructural properties of paraffin/diatomite composite
ترجمه فارسی عنوان
خواص حرارتی و میکرو سازنده کامپوزیت پارافین / دیاتومیت
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
The present work is devoted to the study of the impregnation of both the raw and calcined Algerian diatomite with a mixture of paraffin wax (PW) and liquid paraffin (LP) in order to obtain composite PCMs with a melting temperature below 30â¯Â°C and an appropriate latent heat. Structural, microstructural and thermal properties were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTâIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The raw diatomite contains many phases such as quartz (hexagonal SiO2), tridimite (trigonal SiO2) corundum (α-Al2O3, trigonal), CaSO4 (orthorhombic) and calcite (CaCo3, trigonal). After calcination, the main phases are quartz, tridimite, calcite and CaSO4. The SEM micrographs show that the PCMs are well impregnated into the diatomite pores. The FTâIR results reveal the absence of chemical interaction between paraffin and diatomite. The paraffin/calcined diatomite composite PCMs exhibits a melting temperature of 28.44â¯Â°C and a latent heat of about 56.40â¯J/g. Due to their thermal reliability and thermal energy storage performance after thermal cycling, the prepared composites PCMs are good candidates for thermal energy storage in buildings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 157, November 2018, Pages 136-144
Journal: Vacuum - Volume 157, November 2018, Pages 136-144
نویسندگان
Sihem Benayache, Safia Alleg, Alima Mebrek, Juan José Suñol,