Pressure drop, heat transfer and performance of single-phase turbulent flow in spirally corrugated tubes

Yang, Dong; Li, Huixiong; Chen, Tingkuan

doi:10.1016/s0894-1777(01)00047-4

Cited by 100 publications

(24 citation statements)

References 14 publications

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“…The mechanism for improvement of the heat transfer performance in the passive method is by promoting turbulence near the tube wall surface to reduce the thermal boundary layer thickness. Another mechanism is based on intense fluid mixing by modified tubes such as finned tube, tube with rib, tube with spirally roughened wall, corrugated tube, fluted tube, helical tube, elliptical axis tube and microfin tube [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Among the modified tubes, the corrugated tube and the fluted tube have become important for heat transfer enhancement in turbulent single phase flow as the pressure drop increment is reasonable.…”

Section: Literature Reviewmentioning

confidence: 99%

“…They observed that the corrugated tubes provide higher heat transfer and friction factor, up to 25 and 30% respectively, than the smooth tube. Dong et al [23] presented the heat transfer and friction factor characteristics in a spirally corrugated tube using water and oil as the working fluids. Their results revealed that the heat transfer coefficient and friction factor of the corrugated tube are higher than those of the smooth tube by up to 120% and 160%, respectively.…”

Section: Literature Reviewmentioning

confidence: 99%

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Double tube heat exchanger with novel enhancement: part II—single phase convective heat transfer

Tiruselvam¹,

Chin²,

Raghavan³

2012

Heat Mass Transfer

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The study is conducted to evaluate the heat transfer characteristics of two new and versatile enhancement configurations in a double tube heat exchanger annulus. The novelty is that they are usable in single phase forced convection, evaporation and condensation. Heat transfer coefficients are determined by the Wilson Plot technique in laminar and turbulent flow and correlations are proposed for Nusselt numbers. Comparisons are then made between heat transfer and flow friction.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Double tube heat exchanger with novel enhancement: part II—single phase convective heat transfer

Tiruselvam¹,

Chin²,

Raghavan³

2012

Heat Mass Transfer

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show abstract

“…The size of industrial shell-and tube heat exchangers can be reduced considerably by using corrugated tubes instead of smooth tubes. The heat transfer and flow characteristics of two-phase flow in enhanced tubes have been studied by a number of researchers, and some examples of the seminal studies are described below: Dong et al [30] studied the turbulent friction and heat transfer characteristics of four spirally corrugated tubes with various geometrical parameters. Their results indicated that the spirally corrugated ribs have an effect on the enhancement of heat transfer but not as large as the effect on the increases in friction.…”

Section: Literature Reviewmentioning

confidence: 99%

Double tube heat exchanger with novel enhancement: part 3—convective condensation

Tiruselvam¹,

Chin²,

Raghavan³

2012

Heat Mass Transfer

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Two novel enhanced tubes, viz. Turbo-C with three dimensional surface corrugations and EXTEK with helical flutes, are evaluated in the present work. They are chosen for study because of their versatility for use in condensation as well as evaporation in a double tube heat exchanger assembly, typically as used in water source heat pumps. Average and local values of heat transfer coefficient and two-phase pressure drop are reported.

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“…The experimental results show that the total heat transfer coefficient of the carbon steel spirally fluted tube is around 10−17 % higher than the carbon steel smooth tube. Dong et al (2001) presented the experimental studied the turbulent flow in a spirally corrugated tube on pressure drop and heat transfer. The roughness height ratio, e/D = 0.0243, 0.0199, 0.0302, and 0.0398 and spiral pitch ratio p/ D = 0.623, 0.62, 0.438, 0.598 were investigated.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on turbulent forced convection and heat transfer characteristic in spirally semicircle-grooved tube

Promthaisong

Boonloi

Jedsadaratanachai

2016

Int J Mech Mater Eng

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Turbulent forced convection and heat transfer structure in the spirally semicircle-grooved tube heat exchanger are numerically examined. The computational problem is solved by finite volume method (FVM) with the SIMPLE algorithm. The influences of groove depth and helical pitch on heat transfer, pressure loss, and thermal performance are investigated for turbulent regime, Re = 5000-20,000. As a result, the swirling flow is found through the test section due to the groove on the tube wall. The flow structure in the spirally semicircle-grooved tube can separate into two types: main and secondary swirling flows. The main swirling flow is found in all cases, while the secondary swirling flow is detected when DR ≥ 0.06. The swirling flow disturbs the thermal boundary layer on the tube wall that is an important reason for heat transfer augmentation. In range studies, the enhancements on heat transfer and friction loss are around 1.16-1.96 and 1.2-10.8 time above the smooth tube, respectively. The optimum thermal performance is around 1.11, which detected at DR = 0.06, PR = 1.4, and Re = 5000. The correlations of the Nusselt number and friction factor for the spirally semicircle-grooved tube with PR = 1.4 are produced to help to design the tube heat exchanger.

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Pressure drop, heat transfer and performance of single-phase turbulent flow in spirally corrugated tubes

Cited by 100 publications

References 14 publications

Double tube heat exchanger with novel enhancement: part II—single phase convective heat transfer

Double tube heat exchanger with novel enhancement: part II—single phase convective heat transfer

Double tube heat exchanger with novel enhancement: part 3—convective condensation

Numerical investigation on turbulent forced convection and heat transfer characteristic in spirally semicircle-grooved tube

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