Experimental Study on Laminar Forced Convection of Al<sub>2</sub>O<sub>3</sub>/Water and Multiwall Carbon Nanotubes/Water Nanofluid of Varied Particle Concentration with Helical Twisted Tape Inserts in Pipe Flow

Chougule, Sandesh S.; Nirgude, Vishal V.; Sahu, Santosh Kumar

doi:10.1080/01457632.2017.1341235

Cited by 22 publications

(4 citation statements)

References 29 publications

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“…Azmi et al [ 95 ] numerically validate the TT with nano-fluids. Chougule et al [ 96 ] experimentally studied the nano-fluids with helical TT. Sadeghi et al [ 97 ] works on HT characteristics with nano-fluids.…”

Section: The Major Techniques Of Ht Development In Ttmentioning

confidence: 99%

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

Khargotra

Kumar

Nadda

et al. 2023

Heliyon

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Section: The Major Techniques Of Ht Development In Ttmentioning

confidence: 99%

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

Khargotra

Kumar

Nadda

et al. 2023

Heliyon

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“…Best results of thermal performance are achieved by Sun et al 41 with the flow of Cu nanofluid as compared with Al, Al 2 O 3 , Fe 2 O 3 , multi wall carbon and graphite nanofluids. Heat transfer enhancement is achieved by Chougule et al 42 with the flow of MWCNT nanofluid in helical screw insert as compared with Al 2 O 3 nanofluid. Heat transfer augmentation is found by Bellos et al 43 with flow of CuO nanofluid in a turbulator with through collector.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical thermal performance analysis with exergy destruction on nanofluid flow in tube with double strip helical screw inserts

Chaurasia

Sarviya

2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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Experimental and numerical analysis is arranged with exergy destruction to evaluate thermal performance of system on nanofluid flow in tube with single and double strip helical screw inserts at different values of twist ratio in laminar flow regime. CFD analysis has occurred on the fluent workbench of ANSYS software. The Nusselt number attained enhancement with the flow of nanofluid in double strip helical screw inserts as compared with single strip helical screw inserts at decreasing values of twist ratio and increasing values of Reynolds number. Maximum enhancement of 421% is found with Nusselt number in the flow of nanofluid in tube with double strip helical screw insert at 1.5 of twist ratio and lower value of Reynolds number as compared with the flow of water in plain tube. Common correlations of Nusselt number and friction factor are generated. Exergy destruction number is attained less than one value for both types of inserts at different values of twist ratio and Reynolds number, whereas attained lower value with the flow of nanofluid in tube with double strip helical screw insert at twist ratio of 1.5 and low value of Reynolds number. Heat transfer enhancement number is attained more than one value for both types of inserts with different values of twist ratio and Reynolds number, whereas double strip helical screw inserts attained maximum value at twist ratio of 1.5 in the range of Reynolds number. Therefore, double strip helical screw inserts are the best inserts as compared with single strip helical screw inserts to compact the size of heat exchangers, whereby size of many thermal applications could be compact such as solar water heater, electronic cooling devices, automobile radiator, power plants etc.

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“…To increase the thermohydraulic performance of engineering systems, different techniques have been proposed, among which using twisted tape inserts has been widely used [ 6 , 7 ]. Twisted tape generates a swirl flow that disturbs boundary layers of velocity and temperature inside the tube, which directly improves the heat transfer coefficient in a tube [ 8 , 9 , 10 , 11 ]. Applying additive nanoparticles to the base fluid to enhance the thermophysical properties of the working fluid has also been considered as an effective technique to modify heat transfer [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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

Ghalambaz

Arasteh

Mashayekhi³

et al. 2020

Nanomaterials

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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.

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Experimental Study on Laminar Forced Convection of Al₂O₃/Water and Multiwall Carbon Nanotubes/Water Nanofluid of Varied Particle Concentration with Helical Twisted Tape Inserts in Pipe Flow

Cited by 22 publications

References 29 publications

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

Experimental and numerical thermal performance analysis with exergy destruction on nanofluid flow in tube with double strip helical screw inserts

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

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Experimental Study on Laminar Forced Convection of Al2O3/Water and Multiwall Carbon Nanotubes/Water Nanofluid of Varied Particle Concentration with Helical Twisted Tape Inserts in Pipe Flow

Cited by 22 publications

References 29 publications

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

A review of different twisted tape configurations used in heat exchanger and their impact on thermal performance of the system

Experimental and numerical thermal performance analysis with exergy destruction on nanofluid flow in tube with double strip helical screw inserts

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

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Experimental Study on Laminar Forced Convection of Al₂O₃/Water and Multiwall Carbon Nanotubes/Water Nanofluid of Varied Particle Concentration with Helical Twisted Tape Inserts in Pipe Flow