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Open AccessArticle

Investigation of Overlapped Twisted Tapes Inserted in a Double-Pipe Heat Exchanger Using Two-Phase Nanofluid

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Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
2
Faculty of Electrical–Electronic Engineering, Duy Tan University, Da Nang 550000, Vietnam
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Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran
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Research & Development Team, Couette Limited, Altrincham WA14 2PX, UK
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Department of Mechanical, Aerospace and Civil Engineering (MACE), The University of Manchester, Manchester M13 9PL, UK
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Metamaterials for Mechanical, Biomechanical and Multiphysical Applications Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
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Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
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CanmetENERGY Research Centre, Natural Resources Canada, 1 Haanel Drive, Ottawa, ON K1A 1M1, Canada
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(9), 1656; https://doi.org/10.3390/nano10091656
Received: 30 July 2020 / Revised: 17 August 2020 / Accepted: 21 August 2020 / Published: 24 August 2020
(This article belongs to the Special Issue Applications of Nanofluids)
This study investigated the laminar convective heat transfer and fluid flow of Al2O3 nanofluid in a counter flow double-pipe heat exchanger equipped with overlapped twisted tape inserts in both inner and outer tubes. Two models of the same (co-swirling twisted tapes) and opposite (counter-swirling twisted tapes) angular directions for the stationary twisted tapes were considered. The computational fluid dynamic simulations were conducted through varying the design parameters, including the angular direction of twisted tape inserts, nanofluid volume concentration, and Reynolds number. It was found that inserting the overlapped twisted tapes in the heat exchanger significantly increases the thermal performance as well as the friction factor compared with the plain heat exchanger. The results indicate that models of co-swirling twisted tapes and counter-swirling twisted tapes increase the average Nusselt number by almost 35.2–66.2% and 42.1–68.7% over the Reynolds number ranging 250–1000, respectively. To assess the interplay between heat transfer enhancement and pressure loss penalty, the dimensionless number of performance evaluation criterion was calculated for all the captured configurations. Ultimately, the highest value of performance evaluation criterion is equal to 1.40 and 1.26 at inner and outer tubes at the Reynolds number of 1000 and the volume fraction of 3% in the case of counter-swirling twisted tapes model. View Full-Text
Keywords: overlapped twisted tape; two-phase; heat transfer; nanofluid; double-pipe overlapped twisted tape; two-phase; heat transfer; nanofluid; double-pipe
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MDPI and ACS Style

Ghalambaz, M.; Arasteh, H.; Mashayekhi, R.; Keshmiri, A.; Talebizadehsardari, P.; Yaïci, W. Investigation of Overlapped Twisted Tapes Inserted in a Double-Pipe Heat Exchanger Using Two-Phase Nanofluid. Nanomaterials 2020, 10, 1656. https://doi.org/10.3390/nano10091656

AMA Style

Ghalambaz M, Arasteh H, Mashayekhi R, Keshmiri A, Talebizadehsardari P, Yaïci W. Investigation of Overlapped Twisted Tapes Inserted in a Double-Pipe Heat Exchanger Using Two-Phase Nanofluid. Nanomaterials. 2020; 10(9):1656. https://doi.org/10.3390/nano10091656

Chicago/Turabian Style

Ghalambaz, Mehdi; Arasteh, Hossein; Mashayekhi, Ramin; Keshmiri, Amir; Talebizadehsardari, Pouyan; Yaïci, Wahiba. 2020. "Investigation of Overlapped Twisted Tapes Inserted in a Double-Pipe Heat Exchanger Using Two-Phase Nanofluid" Nanomaterials 10, no. 9: 1656. https://doi.org/10.3390/nano10091656

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