The optimum fin spacing of circular tube bank fin heat exchanger with vortex generators

Hu, Wanling; Su, Mei; Wang, Liangcheng; Zhang, Qiang; Chang, Li-Min; Song, Lei; Wang, Liang-Bi

doi:10.1007/s00231-013-1169-0

Cited by 18 publications

(5 citation statements)

References 31 publications

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“…FaJiang et al [3] investigated the effect of pipe diameter on heat transfer rate and showed that by increasing the diameter of the pipes, the trail area behind the pipes expands and increases the heat transfer. Hu et al [4] studied increasing the distance between the fins and observed that the heat transfer remains unchanged, but the pressure drop increases. Aksenov et.…”

Section: Introductionmentioning

confidence: 99%

“…He found that by increasing the height of the fin, the heat transfer efficiency decreased and the pressure drop increased. In a number of conducted researches, researchers have extracted from the experimental results of self-relationship work, [which include Ward-Vian 6], Maradiya et al [7], Taler [1] and Hu et al [ 4] pointed out. Numerical activities have always allocated a large share of research from the past to the present.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Heat Transfer Performance of the Heat Exchanger for Underwater Vehicle Engine by Increasing Fluid Flow Turbulence

2022

IRJMETS

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Due to limited space and energy, increasing the performance of the underwater marine vehicle motor is one of the most important parameters in the design process. Increasing the performance of the underwater marine vehicle motor is directly related to increasing the efficiency of its cooling heat exchanger. In this paper, the aim is to use the geometric changes of the fins and increase the contact surface between the heat exchanger and the passing fluid in order to increase the turbulence of the flow to increase the efficiency of the heat exchanger. The existing experimental heat transfer relations have been used to validate the numerical solution method. ANSYS fluent software has been used for numerical simulation. In this simulation, the pressure-based solver is used to solve the Navier Stokes equations along with the RNG k-ε turbulent model, and the solution is intended steady with air as working fluid. The effect of fluid flow velocity on circular fines at three different velocities has been investigated and then the effect of geometric changes of teeth has been evaluated in the speed of 3.0428 m/s. In the case of circular fins, the increase of fluid velocity increases heat transfer, and in the case of toothed fin, increasing the height of the teeth causes a slight increase in heat transfer and pressure drop, but as the number of teeth increases, the Nusselt number and pressure drop decrease significantly.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving the Heat Transfer Performance of the Heat Exchanger for Underwater Vehicle Engine by Increasing Fluid Flow Turbulence

2022

IRJMETS

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“…Hu at. all., [7] focused on a computational study the performance analysis through a rectangular channel with circular pin fins that attached to a flat surface. Staggered arrangements arranged pin fins and the heat transfer is assumed to be conjugated in nature.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Fin Spacing for Heat Transfer Enhancement in Cross Flow Over Tubes Between Two Parallel Plates

Oumer

Alias²

2019

JSAE

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This research explains the investigation of fin spacing for heat transfer enhancement in the finned tube heat exchanger. The objective of this paper is to recommend the optimum fin spacing for heat transfer enhancement. Three different types of tube and spacing are identified through the simulation from Ansys software. The data between simulation using Ansys Fluent and published literature were being compared. Graph of total pressure, Nusselt number and total temperature have been plotted to make the comparison. Result obtained showed that were a bigger agreement between the simulation and published literature for both types of the tube which are circular and elliptic. From the analysis, there were considered two types of arrangement for the different types of tube. From that, the aligned arrangement is the best for heat transfer enhancement compared to the staggered. For the effect of spacing, there was three spacing which is 1.7 mm, 1.8 mm, and 2.0 mm spacing with velocity and the total heat flux is set to be constant (v =1.4 m/s; q = 500 W/m2). For the circular tube, it can be seen that the wider of the fin spacing gave the best heat transfer enhancement in the heat exchanger. Different from the circular which is 1.8 mm spacing is the best for heat transfer enhancement. Other types of tube are a flat surface which is comparing with the variations of Nu vs Re with different heat flux. Then, the result showed that as the Re is increased the Nu will also increase. In the other side, it is recommended for future work to do the real model dimension followed to import to the Ansys instead of assuming the model is symmetrical.

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“…The authors developed these models by employing a GA and observed the performance of heat exchanger in relation to heat transfer and fluid flow. Several other investigators [17][18][19][20][21][22][23][24][25][26][27][28][29] used different strategies for the optimization of various heat exchangers design.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective thermo‐economic and thermodynamics optimization of a plate–fin heat exchanger

Raja

Jhala

Patel

2017

Heat Trans. Asian Res.

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In the present work, a multiobjective heat transfer search (MOHTS) algorithm is proposed and investigated for thermo‐economic and thermodynamic optimization of a plate–fin heat exchanger (PFHX). Heat exchanger effectiveness and total annual cost (TAC) are considered as thermo‐economic objective functions. Similarly, entropy generation rate and heat exchanger effectiveness are considered as thermodynamic objective functions. Six design variables including flow length of cold and hot streams, no flow length, fin height, fin pitch, and fin offset length are considered as decision variables. Effectiveness and accuracy of the proposed algorithm are evaluated by analyzing application examples of a PFHX. The results obtained using the proposed algorithm for thermo‐economic considerations are compared with the available results of NSGA‐II and TLBO in the literature. Results show that 3.56% to 10.29% reductions in TAC with 0.48% to 0.81% higher effectiveness are observed using the proposed approach compared to TLBO and NSGA‐II approaches. Additionally, the distribution of each design variable in its allowable range is also shown for thermo‐economic consideration to identify the level of conflict on objective functions. The sensitivity analyses of design variables on the objective functions value are also performed in detail.

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The optimum fin spacing of circular tube bank fin heat exchanger with vortex generators

Cited by 18 publications

References 31 publications

Improving the Heat Transfer Performance of the Heat Exchanger for Underwater Vehicle Engine by Increasing Fluid Flow Turbulence

Improving the Heat Transfer Performance of the Heat Exchanger for Underwater Vehicle Engine by Increasing Fluid Flow Turbulence

Investigation of Fin Spacing for Heat Transfer Enhancement in Cross Flow Over Tubes Between Two Parallel Plates

Multiobjective thermo‐economic and thermodynamics optimization of a plate–fin heat exchanger

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