Intensification of heat exchanger performance utilizing nanofluids

Abstract

Heat exchangers are widely utilized in different thermal systems for diverse industrial aspects. The selection of HEx depends on the thermal efficiency, operating load, size, flexibility in operation, compatibility with working fluids, better temperature and flow controls, and comparatively low capital and maintenance costs. Heat transfer intensification of heat exchangers can be fulfilled using passive, active, or combined approaches. Utilizing nanofluids as working fluids for heat exchangers have evolved recently. The performance of heat exchangers employed different nanofluids depends mainly on the characteristics and improvement of thermophysical properties. Regarding the unique behavior of different nanofluids, researchers have attended noteworthy progress. The current study reviews and summarizes the recent implementations carried out on utilizing nanofluids in different types of heat exchangers, including plate heat exchangers, double-pipe heat exchangers, shell and tube heat exchangers, and cross-flow heat exchangers. The results showed that nanofluids with enhanced thermal conductivity, although accompanied by a considerable decrease in the heat capacity and raising viscosity, has resulted in performance enhancement of different heat exchangers types. So, the performance evaluation criterion that combines the thermal enhancement and increases the pumping power for any type of heat exchangers is requisite to evaluate the overall performance properly. The challenges and opportunities for future work of heat transfer and fluid flow for different types of heat exchangers utilizing nanofluids are discussed and presented.

Publication DOI: https://doi.org/10.1016/j.ijft.2021.100071
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences
Additional Information: © 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license
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Related URLs: https://www.sci ... 0094?via%3Dihub (Publisher URL)
PURE Output Type: Article
Published Date: 2021-05
Published Online Date: 2021-02-16
Accepted Date: 2021-02-01
Authors: Maghrabie, Hussein M.
Elsaid, Khaled
Sayed, Enas Taha
Abdelkareem, Mohammad Ali
Wilberforce, Tabbi (ORCID Profile 0000-0003-1250-1745)
Ramadan, Mohamad
Olabi, A.G.

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