Parametric study on heat transfer and pressure drop of twisted oval tube bundle with in line layout

Li, Xiuzhen; Zhu, Dongsheng; Yin, Yingde; Tu, Aimin; Liu, Shijie

doi:10.1016/j.ijheatmasstransfer.2019.02.031

Cited by 50 publications

(11 citation statements)

References 34 publications

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“…The optimal design variables against Re are also obtained, which carried out practical significances for designing perfect heat exchanger. Li et al (2019) a numerical investigation is conducted to investigate air side heat transfer and pressure drop performance of twisted oval tube bundles with in line layout in cross flow. The results revealed that the twisted oval tube bundles perform excellent heat transfer performance compared with other tube bundles in cross flow.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

“…The results revealed that the twisted oval tube bundles perform excellent heat transfer performance compared with other tube bundles in cross flow. Li et al (2019) the ratio of outer major axis to outer minor axis, twist pitch length, transverse tube pitch, longitudinal tube pitch and number of longitudinal tube rows on the air side heat transfer tube and pressure drop performance are examined, which reveals that the twisted oval tube is an aerodynamic tube that is free of the angle of attack. Tan et al (2012) concluded that the emergence of twist in the twisted oval tube results in secondary flow and it is this secondary flow that enhances the total velocity and temperature distributions of the twisted oval tube.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

See 1 more Smart Citation

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Kumar¹,

Datt²,

Bhist³

et al. 2019

Frontiers in Heat and Mass Transfer

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This work presents a review of the research recent results concerning the augmentation of hydrodynamic and thermal performance of various twisted tape inserts in heat exchanger tubes. The thermal and hydrodynamic correlations for various twisted tape elements have been summarized. A comparative study of thermal and hydrodynamic performance of numerous twisted elements has also been reported to understand the result of applications of twisted tape inserts in heat exchanger tubes. The literature review found that multiple twisted tapes heat exchanger tube shape enhanced hydrodynamic and thermal performance than other comparable twisted tape inserts heat exchanger tube shapes. The review of twisted tape inserts techniques existing in this paper will be helpful to the investigators working in this field.

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Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Kumar¹,

Datt²,

Bhist³

et al. 2019

Frontiers in Heat and Mass Transfer

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show abstract

“…Yin [1,2] and others studied the three-dimensional tube evaporator and condenser in the field of refrigeration, and found that the three-dimensional tube evaporator and condenser have a positive impact on the COP (coefficient of performance) of the refrigeration unit. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3][4][5], who studied the heat transfer performance (coefficient of performance) of the refrigeration unit. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3][4][5], who studied the heat transfer performance of a three-dimensional tube bundle with lateral air scour.…”

Section: Introductionmentioning

confidence: 99%

“…The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3][4][5], who studied the heat transfer performance (coefficient of performance) of the refrigeration unit. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3][4][5], who studied the heat transfer performance of a three-dimensional tube bundle with lateral air scour. Based on the analysis of the comprehensive heat transfer performance and the law of the three-dimensional tube used in the shell and tube heat exchanger and flue gas heat exchanger by Xun Mo et al [6][7][8], it is concluded that the comprehensive performance of the three-dimensional tube is the best among several kinds of enhanced tubes.…”

Section: Introductionmentioning

confidence: 99%

Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas–Solid Two-Phase Flow Environment

Liu

et al. 2021

Energies

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The three-dimensional tubular heat exchanger has excellent performance in single-phase flow, but its performance in gas solid two-phase flow is still lacking research. In this paper, analysis and comparison of heat exchanger prototypes made up of four different three-dimensional tubes by different comprehensive performance evaluation methods are carried out through experimental research and theoretical analysis. The research results show that the ratio of the long axis to the short axis of the three-dimensional tube has an important influence on its heat transfer performance and flow resistance. Furthermore, a reasonable ratio can be obtained by comparing its comprehensive performance. Among the comprehensive performance analysis results of four kinds of three-dimensional tubes, the comprehensive performance factor ηo-I of type I is the best which achieves the purpose of heat transfer enhancement. Results from the current research could provide beneficial guidance for further design and application of the three-dimensional tubular heat exchanger.

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“…At Reynolds number 3000 and Prandtl number 20 with a twist ratio of 2.5, the maximum enhancement factor of 10.5 was obtained. Also, Li et al investigated air inside twisted oval tube bundle, spirally corrugated tube, elliptic tube bundle, and circular tube bundle. They found that the twisted oval tube bundle has the highest heat transfer implementation.…”

Section: Introductionmentioning

confidence: 99%

Indirect thermosiphon flat‐plate solar collector performance based on twisted tube design heat exchanger filled with nanofluid

2020

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Summary Stationary solar collector such as flat‐plate collector is a thermal device, which traps solar energy and converts it into heat that can be used in industrial and domestic applications such as water heating. Flat‐plate collector thermal performance enhancement is investigated in this research paper. Two cross‐sectional geometries of the tube in the heat exchanger were investigated; a normal circular tube and a twisted tube were used in the experiment. The aim of the twisted tube exchanger is to enhance the performance of heat transfer of the tubes and to reduce the shell pressure drop; flat‐plate solar collector is the used application to study the heat exchanger performance. Both twisted tubes heat exchanger and normal circular tubes heat exchanger were examined in the same location and conditions with the same solar collector, both were used in the heat exchanger to study their effect, with two different working fluids, which are distilled water and multiwalled carbon nanotube (MWCNT)/water nanofluid. The system shows an increase in the performance when twisted tubes were used in the system compared with the circular tubes in both distilled water and MWCNT/water nanofluid by 12.8% and 12.5%, respectively, with an improvement by 34% for twisted tubes with MWCNT compared with normal circular tubes with distilled water.

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Parametric study on heat transfer and pressure drop of twisted oval tube bundle with in line layout

Cited by 50 publications

References 34 publications

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Hydrodynamic and Thermal Performance Twisted Tape Insert Provided in Heat Exchanger Tubes: A Review

Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas–Solid Two-Phase Flow Environment

Indirect thermosiphon flat‐plate solar collector performance based on twisted tube design heat exchanger filled with nanofluid

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