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International Journal of Nanoscience and Nanotechnology (IJNN)، جلد ۱۰، شماره ۳، صفحات ۱۵۳-۱۶۲
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عنوان انگلیسی Calculation of Heat Transfer Coefficient of MWCNT-TiO2 Nanofluid in Plate Heat Exchanger
چکیده انگلیسی مقاله The objective of the present study is the synthesis of MWCNT-TiO2 hybrid nanostructures by solvothermal synthesis method with TiCl4 as precursor. The heat transfer enhancement due to the use of MWCNT-TiO2 nanofluid was investigated. As-prepared hybrid materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that MWCNTs were uniformly decorated with anatase nanocrystals. The heat transfer performance of the plate heat exchanger (PHE) was investigated using MWCNT-TiO2 nanofluid at various volume flow rates, a wide range of concentrations and inlet temperatures. The performance is discussed in terms of heat transfer coefficient ratio. The results showed that the heat transfer coefficient of the nanofluid was more than that of the base fluid (Distilled Water). The heat transfer coefficient was enhanced with increasing the nanofluid concentration from 0.02 to 0.08 wt.% and volume flow rate from 2 to 3.5 LPM. Conversely, the heat transfer coefficient decreased with increasing the nanofluid inlet temperature from 36 to 60oC.
کلیدواژه‌های انگلیسی مقاله Nanofluids,Plate Heat Exchanger,Heat transfer,Hybrid
نویسندگان مقاله محمدعلی صافی | m a
transport phenomena and nanotechnology laboratory, department of chemical engineering, college of eng., university of tehran, tehran, i. r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

a قضاتلو |
transport phenomena and nanotechnology laboratory, department of chemical engineering, college of eng., university of tehran, tehran, i. r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

علی اکبر حمیدی | a a
department of chemical engineering, college of eng., university of tehran, tehran, i. r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

m شریعتی نیاسر | shariaty niassar
transport phenomena and nanotechnology laboratory, department of chemical engineering, college of eng., university of tehran, tehran, i. r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

نشانی اینترنتی http://www.ijnnonline.net/article_9092_f29cffc3fb05bfdd45c57612d5b6cb03.pdf
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زبان مقاله منتشر شده en
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