Studies on Fanning Friction (<i>f</i>) and Colburn (<i>j</i>) Factors of Offset and Wavy Fins Compact Plate Fin Heat Exchanger–A CFD Approach

Ismail, L. Sheik; Velraj, R.

doi:10.1080/10407780903507957

Cited by 46 publications

(7 citation statements)

References 19 publications

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“…Ismail and Velraj [8] numerically studied on Fanning friction and Colburn factors for the offset and wavy fins compact plate fin heat exchanger. Correlations for friction and Colburn factors have been developed for the laminar and turbulent regions with different types of wavy fins geometries.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Ahmed

Shuaib

Yusoff

2012

International Journal of Heat and Mass Transfer

118

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Section: Introductionmentioning

confidence: 99%

Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Ahmed

Shuaib

Yusoff

2012

International Journal of Heat and Mass Transfer

118

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“…Benefit from the effective flow interruptions and improved heat transfer by the waveform, the plate fin heat exchanger with wavy fins is attractive for industrial application with advantages of efficient thermal performance, proper compactness, low weight, robust structure, low cost and uncut surfaces in the flow direction [37,38]. Since there are no cuts in the surface, wavy fins can be employed in applications where an interrupted fin might be subject to a potential fouling or clogging problem due to particulates, freezing moisture, bridging louvers due to condensate, and so on [37]. Thus, the comprehensive performance optimization of the plate-fin heat exchanger with wavy fins is of significant profits for both academia and industry.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the comprehensive performance optimization of the plate-fin heat exchanger with wavy fins is of significant profits for both academia and industry. Various correlations [36,37,[39][40][41] of heat transfer and flow friction characteristics for wavy fins have been proposed for limited application ranges. Recently, Naef A.A. Qasem and Syed M. Zubair [5] proposed and validated a more accurate and generalized air-side thermal-hydraulic correlation for wavy-fin compact heat exchangers from experimental and numerical data, which is adopted for the performance evaluation and optimization for this work.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive performance investigation and optimization of a plate fin heat exchanger with wavy fins

Cui

Song

2022

Therm sci

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As the pressure drop and pump power increase with the enhancement of heat transfer, it is of great value to investigate the comprehensive performance of the heat exchanger based on common accurate correlations of heat transfer and flow friction. This paper adopts a generalized air-side thermal-hydraulic correlation to study the comprehensive performances of the plate fin heat exchanger with wavy fins. To better understand the fin characteristics, performance indexes under the same flow rate, pressure drop and pump power are employed to estimate the comprehensive flow and heat transfer performances. The nonlinear optimization problem is established in consideration of the multiple independent variables with the maximum effectiveness or the minimum modified entropy generation number as the optimization objective function, which is solved by the genetic algorithm. Comparative analysis is conducted for results obtained from the parametric analysis and heat exchanger optimization, indicating that the objective function of the modified entropy generation number is effective for the design optimization of the comprehensive performance.

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“…Gadeck [6] studied corugated channels on a much larger Reynolds numbers (0≤ Re ≤ 7500) containing all the flow regimes from laminar to turbulent, he then comparred the results with the flow between two plates and reach the conclusion that the corrugated chanels transfers the heat 2 times better. In his paper Ismail [7] numerically studied the wavy and offset fins and proposed criterial relations for f, and j. Dong in his papers [8]- [10] studied the effect of pitch, height and thickness of the wavy fin experimentally and numerically. In recent years there are several papers that have sumarizes and generalizes the criterial relations obtained on the wavy fin from these the one of the Aliabadi et.…”

Section: Introductionmentioning

confidence: 99%

The amplitude influence on the thermal and hydraulic performances for a wavy air fin in a compact heat exchanger used in agriculture applications

Albețel¹,

Rus²,

David³

et al. 2020

E3S Web Conf.

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Wavy air fins are used in the construction of aluminum compact heat exchangers which are used in thermal equipment for agriculture, construction, and industrial applications. Since atmospheric air convective heat transfer coefficient is among the lowest of all fluids, there is a special interest in the optimizing of the geometry for this type of heat exchangers. One of the biggest challenges in designing cooling solutions for agriculture applications is the clogging effect on the performances of the heat exchangers. Clogging leads to a critical performance reduction of the compact heat exchanger used for these types of applications. This specific study, which was conducted in RAAL S.A company in collaboration with the University “Politehnica” of Timisoara”, checks the influence of the wavy air fin amplitude on the thermal and hydraulic performances and tries to find an optimum solution suitable for these specific projects. So, starting from the standard existing amplitude, different amplitude values were studied analytically. The analytical studies were further confirmed by real life measurements. The scope of the study was to find an optimal value for the amplitude that can further improve the overall performance of the aluminum compact heat exchangers and reduce the clogging effect.

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Studies on Fanning Friction (f) and Colburn (j) Factors of Offset and Wavy Fins Compact Plate Fin Heat Exchanger–A CFD Approach

Cited by 46 publications

References 19 publications

Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Comprehensive performance investigation and optimization of a plate fin heat exchanger with wavy fins

The amplitude influence on the thermal and hydraulic performances for a wavy air fin in a compact heat exchanger used in agriculture applications

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