KarimiPour, A., toghraie, D., akbari, O., Zarringhalam, M., Ahmadi Sheikh Shabani, G. (2016). Experimental investigation of the effect of suspended nanoparticles into conventional fluid on the heat transfer improvement. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(2), 209-220.
Arash KarimiPour; davood toghraie; omid ali akbari; Majid Zarringhalam; Gholamreza Ahmadi Sheikh Shabani. "Experimental investigation of the effect of suspended nanoparticles into conventional fluid on the heat transfer improvement". Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9, 2, 2016, 209-220.
KarimiPour, A., toghraie, D., akbari, O., Zarringhalam, M., Ahmadi Sheikh Shabani, G. (2016). 'Experimental investigation of the effect of suspended nanoparticles into conventional fluid on the heat transfer improvement', Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(2), pp. 209-220.
KarimiPour, A., toghraie, D., akbari, O., Zarringhalam, M., Ahmadi Sheikh Shabani, G. Experimental investigation of the effect of suspended nanoparticles into conventional fluid on the heat transfer improvement. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 2016; 9(2): 209-220.
Experimental investigation of the effect of suspended nanoparticles into conventional fluid on the heat transfer improvement
1- Assistant Professor, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2Assistant Professor, Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
3Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran
4PhD student, Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
5Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran.
Abstract
Heat Transfer has special importance in engineering applications. So, researchers have suggested different new idea to increase heat transfer and using nanofluid is one of these methods In recent years, new methods have been used. One of these methods is the use of nanofluids, ., because nanofluids have higher heat transfer potential than base conventional fluids. In this investigation effect of suspended CuO nanoparticles with volume fraction of 0.005 into base water fluid is considered under turbulent flow regime inside double tube counter heat exchanger. It was observed that suspending pre-mentioned amount of nanoparticle augmentate heat transfer capability of conventional water fluid. On the other side, it leads to increase pressure drop and friction factor of water base fluid. Finally they conclude that positive effect of heat transfer augmentation is so stronger than negative effect of increasing pressure drop and friction factor that motivate to utilize this nanofluid in practical applications.
پژوهش تجربی بهبود انتقال انرژی گرمایی در اثر تعلیق نانو ذرات داخل سیال عامل انتقال گرما
Authors [Persian]
ارش کریم پور1; داود طغرایی2; امید علی اکبری3; مجید زرین قلم4; غلامرضا احمدی شیخ شبانی5
1استادیار، گروه مهندسی مکانیک، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران.
2مدرس دانشگاه، عضو هیت علمی دانشگاه ازاد اسلامی خمینی شهر، ریاست دانشکده مهندسی مکانیک دانشگاه ازاد خمینی شهر
3باشگاه پژوهشگران جوان و نخبگان، واحد خمینی شهر، دانشگاه آزاد اسلامی، واحد خمینی شهر، ایران.
4دانشجوی دکتری، گروه مهندسی مکانیک، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران.
5باشگاه پژوهشگران جوان و نخبگان، واحد خمینی شهر، دانشگاه آزاد اسلامی، واحد خمینی شهر، ایران.
Abstract [Persian]
در کاربردهای مهندسی انتقال حرارت سیالات از اهمیت ویژه‌ای برخوردار است، بنابراین مهندسان و پژوهشگران، روش‌های متعددی را به منظور افزایش انتقال حرارت پیشنهاد کردند. در سال‌های اخیر روش‌های نوینی به کار گرفته شده است. یکی از این روش‌ها استفاده ازنانو‌سیالات است. نانو‌سیالات دارای خواص گرمایی مطلوبی نسبت به سیال پایه می‌باشند. در این تحقیق تاثیر تعلیق نانوذرات اکسید مس داخل سیال عامل آب با کسر حجمی 005/0(5/0%)، تحت رژیم جریان مغشوش در داخل مبدل حرارتی دو لوله‌ای جریان مخالف مورد بررسی قرار می‌گیرد و مشاهده می‌شود که تعلیق این میزان از نانو ذرات اکسید مس در داخل سیال پایه آب، منجر به بهبود قابلیت انتقال انرژی گرمایی این سیال عامل از سیستم می‌گردد. همچنین از سوی دیگر؛ تعلیق نانو ذرات منجر به افزایش افت فشار و ضریب اصطکاک سیال پایه نیز می گردند، اما محاسبات انجام شده نشان می‌دهند که تاثیرات مثبت استفاده از این میزان نانو ذرات معلق در آب بر بهبود انتقال گرما از سیستم؛ نسبت به تاثیرات منفی آنها بر افزایش افت فشار و ضریب اصطکاک غلبه می‌کند که این نتایج، محققان را به سوی استفاده از این نانو سیال به عنوان سیال عامل در کاربردهای عملی رهنمون می‌سازد.
Keywords [Persian]
بهبود انتقال انرژی گرمایی، مبدل حرارتی، نانوسیال
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