کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5012274 | 1462812 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of environmentally friendly and facile functionalization of graphene nanoplatelet and its application in convective heat transfer
ترجمه فارسی عنوان
بررسی عملکرد سازگار با محیط زیست و کاربردی نانو پالتوله گرافن و کاربرد آن در انتقال گرما کنوانسیون
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کلمات کلیدی
انتقال گرما همراه است فاکتور اصطکاک، خواص حرارتی فیزیکی، نانوفیلد ها، کارکرد سبز، نانولوله های گرافن، آشفته،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
The chemical functionalization of carbon-based nanomaterial typically involves toxic and corrosive inorganic acids that are harmful to environment and human health. In this study, an environmentally friendly, facile and cost effective procedure for synthesizing a novel and highly dispersed functionalized graphene nanoplatelets (GNPs) nanofluids for use as a heat transfer fluids was developed. In the new approach, GNPs were functionalized covalently with Gallic Acid (GA) in a one-pot free radical grafting method. The Gallic acid-treated graphene nanoplatelets (GAGNPs) were dispersed in distilled water (DI water) with different weight concentrations to prepare GAGNPs-water nanofluids (nano-coolants). The effectiveness of the functionalization process was verified by the Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and transmission electron microscopy (TEM). The UV-visible absorption spectroscopy was used to show a sustained stability of nanoparticles. Thermo-physical and rheological properties of GAGNPs aqueous suspensions with different weight concentrations were experimentally investigated. This was followed by measurement of the convective heat transfer coefficient, Nusselt number and friction factor for fully developed turbulent flow of GAGNPs nanofluids at a constant heat flux. The experimental results were compared with those of the base fluid. The GAGNPs nanofluids showed a significant increase in the convective heat transfer coefficient and Nusselt number, while the increases in the friction factor and pumping power were small. Furthermore, the comparison showed that the overall performance index was higher than 1. The novel and eco-friendly GAGNPs nanofluids have the potential to be used as highly effective working fluids for various heat transfer applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 150, 15 October 2017, Pages 26-36
Journal: Energy Conversion and Management - Volume 150, 15 October 2017, Pages 26-36
نویسندگان
Rad Sadri, Maryam Hosseini, S.N. Kazi, Samira Bagheri, S.M. Ahmed, Goodarz Ahmadi, Nashrul Zubir, Mohd Sayuti, Mahidzal Dahari,