Experimental study on effect of fluid impingement location on heat transfer characteristics of a new type of elastic tube bundle

Jiang, Bo; Liu, Jian; Zhao, Xianqiao; Guo, Kai; Wang, Jiaxin; Liu, Ke; Tang, Yufeng; Tian, Mei

doi:10.1088/1742-6596/1064/1/012006

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…Using the meshing strategy and the numerical calculation method in this paper, Nu v under different conditions was calculated, and the comparison between simulation results and experimental results is shown in Table 5. Although the shape of the tube bundle in the papers [8,21] is different from the scroll structure studied in this paper, the materials used and the enhanced heat transfer mechanism are completely the same, and a large number of published papers shows that this verification method is effective [10,11,[15][16][17][18][19][20][21].…”

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

“…The results showed that flow velocity greatly affects the vibration of planar ETB, and the harmonic frequency of the vibration is more obvious under low flow velocity. Jiang et al [19] analyzed the vibration and heat transfer characteristics of planar ETBs due to eddy currents by establishing an experimental platform. Their results showed that eddy current has a strong influence on the vibration of planar ETBs, and the HTC under vibration is three times that of nonvibration.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Ji¹,

Zhang²,

Gao³

et al. 2022

Journal of Thermophysics and Heat Transfer

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Based on a new type of elastic scroll tube bundle (ESTB) heat exchanger, the influence of shell-side fluid inlet velocity and tube bundle constraint condition on the enhanced heat transfer performances are researched by a two-way fluidsolid coupling calculation method. Numerical results show that the average heat transfer coefficient (HTC) increases with the shell-side fluid inlet velocity increases when the single group of scroll copper tubes is unconstrained. Within the range of calculated parameters in this paper, the maximum increase of average HTC is 140% under vibration conditions, and the maximum increase of average HTC is 216% under nonvibration conditions. The average HTC decreases as the number of constraints increases under vibration conditions, and the maximum decrease is 42.69%. The average performance evaluation criteria values are greater than 1.00, so the overall heat transfer performance of the ESTB heat exchanger is better.

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Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Ji¹,

Zhang²,

Gao³

et al. 2022

Journal of Thermophysics and Heat Transfer

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“…The results show that the flow rate greatly affects the vibration of the PETB, and the harmonic frequency of vibration is obvious under the condition of a low flow rate. Jiang et al [15] studied the vibration and heat transfer properties of the PETB induced by vortex flow by building an experimental platform. The results show that the vortex flow greatly affects the vibration of the PETB, and the measured surface HTC under this condition is about three times of that under the nonvibrating condition.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Fluid-Induced Vibration and Heat Transfer of Helical Elastic Tube Bundles

Gao

Chen

et al. 2021

Journal of Thermophysics and Heat Transfer

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The study on fluid-induced vibration of helical elastic tube bundles (HETBs) to enhance heat transfer is of great significance in industrial production and energy utilization. The fluid-induced vibration response and the heat transfer property of a HETB heat exchanger were analyzed by using a two-way fluid-solid coupling method. The vibration frequency, displacement amplitude, and heat transfer coefficient were computed while considering varying entrance velocities and helix diameters. Numerical results demonstrate that the middle of the HETB vibrates the most violently, and the vibration is mainly in the vertical direction. There are a large number of vortices in the gaps between the tubes and the inner cavity of the heat exchanger. The vibration amplitude and heat transfer coefficient of the HETB increase significantly when the entrance velocity or helix diameter increases. The effect of vibration-enhanced heat transfer improves with the increase in entrance velocity. The mean value of the heat transfer coefficient at the upper side of the HETBs is 2.205 times that at the lower side.

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Experimental study on effect of fluid impingement location on heat transfer characteristics of a new type of elastic tube bundle

Cited by 2 publications

References 8 publications

Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Analysis on Fluid-Induced Vibration and Heat Transfer of Helical Elastic Tube Bundles

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