Numerical analysis of flow and heat transfer enhancement in a horizontal pipe with P-TT and V-Cut twisted tape

Abed, Azher M.; Majdi, Hasan Shakir; Hussein, Zainab; Fadhil, Doaa; Abdulkadhim, Ammar

doi:10.1016/j.csite.2018.10.004

Cited by 38 publications

(4 citation statements)

References 25 publications

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“…Hydrodynamic and thermal performance are examined experimentally in a round pipe heat exchanger with an innermost corrugated pipe filled with numerous twisted tapes ranging from conservative to adjusted types such as perforated, V type with combined cut, and U-cut. The critical metrics on heat transmission and flow friction demonstrate that the heat transfer and flow friction are more significant than the empty corrugated pipe in all twisted tape corrugated pipes [15], various researchers have investigated other similar studies in a round pipe with V-cut twisted tape inserts [16], [17] and [18]. The heat transmission and friction properties of a heat exchanger pipe equipped with a twisted perforated tape insert with V type with combined cuts are investigated.…”

Section: Heat Transfer Characteristics In V Type With Combined Cut Tw...mentioning

confidence: 99%

Heat transfer enhancement in heat exchangers with V-cut twisted tape inserts: A review

2023

JSST-RL

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Improving heat transfer in the heat exchangers can be achieved by infringement of the laminar sub-layer or generating forced convection by employing twisted tape inserts as turbulence promoters. Significantly less research has been carried out on V type with combined cut twisted tape inserts in heat exchangers. This minireview paper discusses the influence of various shapes V type with combined cut in twisted tape inserts by a few researchers in improving the performance of heat exchangers. V type with combined cut twisted tape design, shapes used, the influence of forced convection, and thermal and hydraulic performance have been discussed.

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Section: Heat Transfer Characteristics In V Type With Combined Cut Tw...mentioning

confidence: 99%

Heat transfer enhancement in heat exchangers with V-cut twisted tape inserts: A review

2023

JSST-RL

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“…The highest thermal performance factors were observed for the twist ratio of 2.0 and ranged between 1.19 and 1.27. Abed et al [85] numerically studied the effects of V-cut TT on HTE using the finite volume method, specifically the realizable κ-ε (RKE) model. The average Nu was found to decrease with increasing twist ratio, and this was attributed to stronger vortex flow generated by a lower twist ratio.…”

Section: Twisted Tapesmentioning

confidence: 99%

Thermal performance enhancement in heat exchangers using active and passive techniques: a detailed review

Bhattacharyya

Vishwakarma

Srinivasan

et al. 2022

J Therm Anal Calorim

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“…Abed et al, [5] has numerically studied the characteristics of heat transfer and friction factor for various twisted tapes (V-cut) and (PTT) inserted within a horizontal tube, with twisted ratios (TR=4.0 & 6.0). Abed et al, [5] the following conclusions are therefore drawn. The use of twisted tape enhances the intensification of energy transfer.…”

Section: Introductionmentioning

confidence: 99%

Numerical Studies on Thermo-Hydraulic Characteristics of Turbulent Flow in a Tube with a Regularly Spaced Dimple on Twisted Tape

Fekadu

H.V²,

Manjunath³

2021

CFDL

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Heat transfer augmentation is an important concern due to the increase in heat management problems in thermal systems. There are many techniques for enhancement of heat transfer, by active and passive techniques. A commonly used passive technique to enhance heat transfer is by inserting twisted tapes in tubes. This work presents a numerical study on Nusselt number, friction factor, and thermal performance characteristics through a circular pipe built-in with/without dimples on twisted tape. The analysis results for a turbulent flow range of 4500≤Re≤20000 are obtained with a twist ratio of the strip is 3.0. The analysis is carried for full-length tape with constant heat flux. The governing equations are numerically solved by a ﬁnite volume method using the RNG κ–ε model. The simulation results of Nusselt number versus Reynolds number of the plain, plain twisted tape and dimple twisted tape tube with the experimental data give a variation of 4.15%, 3.89%, and 7.65%. The friction factor of the dimple twisted tape tube is 60 to 70% higher than that of the plain twisted tube at different Reynolds numbers. The thermal performance factor of the dimple twisted tape and plain twisted tape tube is 30 to 35% respectively higher than that of the plain tube. Due to thermal performance factor is above unity yields a promising heat transfer enhancement. By the present study, an optimum geometrical parameter can be selected for use in heat exchangers.

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Numerical analysis of flow and heat transfer enhancement in a horizontal pipe with P-TT and V-Cut twisted tape

Cited by 38 publications

References 25 publications

Heat transfer enhancement in heat exchangers with V-cut twisted tape inserts: A review

Heat transfer enhancement in heat exchangers with V-cut twisted tape inserts: A review

Thermal performance enhancement in heat exchangers using active and passive techniques: a detailed review

Numerical Studies on Thermo-Hydraulic Characteristics of Turbulent Flow in a Tube with a Regularly Spaced Dimple on Twisted Tape

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