Zadkhast, M., Toghraee, D., karimipour, A. (2016). Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(4), 595-602.
masoud Zadkhast; Davood Toghraee; Arash karimipour. "Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids". Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9, 4, 2016, 595-602.
Zadkhast, M., Toghraee, D., karimipour, A. (2016). 'Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids', Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(4), pp. 595-602.
Zadkhast, M., Toghraee, D., karimipour, A. Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 2016; 9(4): 595-602.
Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids
1MSc Student, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran
2Assistant Professor, Department of Mechanical Engineering, KhomeiniShahr Branch, Islamic Azad University, Isfahan, Iran
3Assistant Professor, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran
Abstract
This work presents a model for calculating the effective thermal conductivity of nanofluids. The proposed model includes the effects of nanoparticles and thermal conductivity base fluid.We will focus on experimental of the volume concentration parameter and temperature on thermal conductivity, nano-fluid combination and Multi-Walled Carbon nanotubes-Oxide / Copper-paid deionized Water. This water-based nanofluids, For two-step volume fractions of the 0.1, 0.2, 0.6 Percentage produced And then, Effective thermal conductivity is measured precisely. In order to measure the thermal conductivity of nanofluids. To measure the thermal conductivity coefficient in THW method, KD2-pro and KS1 probe was used, also with the fluid significantly enhancement shows in thermal conductivity coefficient. Also with the fluid significantly enhancement shows in thermal conductivity coefficient. In lower volume fractions we observed significantly increase in thermal conductivity and receive high degree thermal. Due to the lack of similar studies Due to the lack of similar studies to comprehensively and inefficient of classical thermal conductivity, In order to estimate the thermal conductivity of nanofluids An empirical model that estimates the thermal conductivity of nanofluids model with deviation margin is very low
بررسی ضریب هدایت گرمایی نسبی نانوسیال ترکیبی نانولوله کربنی چند جداره/اکسید مس – آب
Authors [Persian]
مسعود زاده‌خواست1; داود طغرایی2; آرش کریمی‌پور3
1دانشجوی کارشناسی ارشد، دانشکده مکانیک، دانشگاه آزاد اسلامی واحد نجف آباد
2رئیس دانشکده مکانیک
3استادیار، دانشکده مهندسی مکانیک، دانشگاه آزاد اسلامی واحد نجف آباد، ایران، اصفهان
Abstract [Persian]
در این بررسی آزمایشگاهی تأثیر پارامترهای کسر حجمی و دما بر ضریب هدایت گرمایی نسبی، نانو لولههای کربنی و نانو سیال جدید و پرکاربرد اکسید مس- آب دیونیزه پرداخته میشود. نانوسیال با غلظت های حجمی 1/0، 2/0، 6/0 درصد حجمی برای بررسی تأثیر کسر حجمی بر ضریب هدایت گرمایی نسبی آماده شد. همچنین برای بررسی اثر دما، دما به محدودههای30، 40، 50 درجه سلسیوس محدود شد. برای اندازه گیری ضریب هدایت گرمایی نسبی از روش سیم داغ گذرا با استفاده از دستگاه سیم داغ گذرا و پراب استفاده شد. با افزایش دما و افزایش کسر حجمی ضریب هدایت گرمایی نانو سیال در مقایسه با سیال پایه افزایش چشمگیری دارد. در کسرهای حجمی پایین افزایش ضریب هدایت گرمایی چشمگیرتر است. در نتیجه توانستیم با دماها و کسرحجمیهای مختلف به افزایش ضریب هدایت گرمایی در حدود 7/38 درصد دست یابیم که تا به حال در این زمینه کسی اطلاعاتی ارائه نداده است
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