Experimental investigation on heat transfer characteristics of heat exchanger with bubble fin assistance

Subramani, K.; Logesh, K.; Kolappan, S.; Karthik, S.

doi:10.1080/01430750.2018.1472654

Cited by 11 publications

(2 citation statements)

References 15 publications

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“…There was an increase in Re and Nu numbers when the nanoparticle concentration increased [15]. The study conducted by [16] identified that the transport property depends on the size, shape, and volume fraction of nanoparticles. Heris et al [17] had numerically analyzed and exhibited substantial variation in the thermo-physical characteristics of base fluid when nanoparticles dispersed to it.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Fluid Flow Heat Transfer and Frictional Properties of Al2O3 Nanofluids Used in Shell and Tube Heat Exchanger

Barik

Chandran

Dennison

et al. 2023

International Journal of Photoenergy

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Nanofluids are generally utilized in providing cooling, lubrication phenomenon, and controlling the thermophysical properties of the working fluid. In this paper, nanoparticles of Al2O3 are added to the base fluid, which flows through the counterflow arrangement in a turbulent flow condition. The fluids employed are ethylbenzene and water, which have differing velocities on both the tube and the shell side of the cylinders. A shell tube-type heat exchanger is used to examine flow characteristics, friction loss, and energy transfer as they pertain to the transmission of thermal energy. The findings of the proposed method showed that the efficiency of a heat exchanger could be significantly improved by the number, direction, and spacing of baffles. With the inclusion of nanoparticles of 1% volume, the flow property, friction property, and heat transfer rate can be considerably improved. As a result, the Nusselt number and Peclet numbers have been increased to 261 and 9.14 E +5. For a mass flow rate of 0.5 kg/sec, the overall heat transfer coefficient has also been increased to a maximum value of 13464. The heat transfer rate of the present investigation with nanoparticle addition is 4.63% higher than the Dittus–Boelter correlation. The friction factor is also decreased by about 17.5% and 11.9% compared to the Gnielinski and Blasius correlation. The value of the friction factor for the present investigation was found to be 0.0376. It is hence revealed that a suitable proportion of nanoparticles along with the base fluids can make remarkable changes in heat transfer and flow behavior of the entire system.

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Section: Introductionmentioning

confidence: 99%

Investigation on Fluid Flow Heat Transfer and Frictional Properties of Al2O3 Nanofluids Used in Shell and Tube Heat Exchanger

Barik

Chandran

Dennison

et al. 2023

International Journal of Photoenergy

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show abstract

“…Many reviews and studies on passive vortex generators like swirl flow devices and other approaches including bubble fin assistance, surface modifications, reduced weight fin configuration, etc. have been extensively reported [3][4][5][6][7][8][9][10]. The use of active vortex generators like piezo fans and magnetic fans for improvement of heat transfer is studied by Gilson GM et al [11] and Ma HK et al [12,13].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Parametric Optimization of a Static Wavy Flag for Heat Transfer Enhancement

Suman¹,

Gaikwad²

2022

GJRE

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This work investigates the effect of different parameters of a static wavy flag vortex generator on the heat transfer in a rectangular channel using Computational Fluid Dynamics (CFD) analysis. This work encompasses optimizing several parameters of a flag such as flag height from the surface, position in the channel, number of triangular shapes in a flag, and rectangular surface area of the flag. Post analysis results exhibit encouraging results with average Nusselt number in flag height (FH) optimization exceeding that in no flag condition by 41.84%, 47.79%, 54.68% for Re 8236, 12354, and 18344, respectively whereas further position optimization of FH optimized flag exceeds average Nusselt number in no flag condition by 46.86%, 70.68% and 87.26% for the corresponding Re. With significantly less practical application of flags for heat transfer enhancement in industry, this work aims to establish flags as an effective heat transfer enhancement device and demonstrate that with the right optimized parameters, a significant increase of heat transfer in the channel can be achieved.

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Numerical Simulation of High Velocity Impact on Composite Targets Using Advanced Computational Techniques

Subramani

Kanna

2018

Lecture Notes in Mechanical Engineering

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Experimental investigation on heat transfer characteristics of heat exchanger with bubble fin assistance

Cited by 11 publications

References 15 publications

Investigation on Fluid Flow Heat Transfer and Frictional Properties of Al2O3 Nanofluids Used in Shell and Tube Heat Exchanger

Investigation on Fluid Flow Heat Transfer and Frictional Properties of Al2O3 Nanofluids Used in Shell and Tube Heat Exchanger

Numerical Analysis and Parametric Optimization of a Static Wavy Flag for Heat Transfer Enhancement

Numerical Simulation of High Velocity Impact on Composite Targets Using Advanced Computational Techniques

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