Empirical correlations for heat transfer and flow friction characteristics of herringbone wavy fin-and-tube heat exchangers

Wang, Chi-Chuan; Hwang, Y; Lin, Yur Tsai

doi:10.1016/s0140-7007(01)00049-4

Cited by 112 publications

(45 citation statements)

References 7 publications

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“…For both inline and staggered arrangements, it was observed that the pressure drop increases and the heat transfer coefficient decreases with an increase in the tube diameter. The reason was believed to be the ineffective area behind the tubes as explained by Wang et al (2002). The heat transfer coefficient decreased with an increase in the fin height for both the arrangements; however, the pressure drop was independent of the fin height for the staggered arrangement, whereas it increased with an increase in the fin height for the inline arrangement.…”

Section: Side Viewmentioning

confidence: 90%

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A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

Kumar

Joshi

Nayak

et al. 2015

Sadhana

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In this paper, a review is presented on the experimental investigations and the numerical simulations performed to analyze the thermal-hydraulic performance of the air-cooled heat exchangers. The air-cooled heat exchangers mostly consist of the finned-tube bundles. The primary role of the extended surfaces (fins) is to provide more heat transfer area to enhance the rate of heat transfer on the air side. The secondary role of the fins is to generate vortices, which help in enhancing the mixing and the heat transfer coefficient. In this study, the annular and plate fins are considered, the annular fins are further divided into four categories: (1) plane annular fins, (2) serrated fins, (3) crimped spiral fins, (4) perforated fins, and similarly for the plate fins, the fin types are: (1) plain plate fins, (2) wavy plate fins, (3) plate fins with DWP, and (4) slit and strip fins. In Section 4, the performance of the various types of fins is presented with respect to the parameters: (1) Reynolds number, (2) fin pitch, (3) fin height, (4) fin thickness, (5) tube diameter, (6) tube pitch, (7) tube type, (8) number of tube rows, and (9) effect of dehumidifying conditions. In Section 5, the conclusions and the recommendations for the future work have been given.

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Section: Side Viewmentioning

confidence: 90%

“…To validate the selfdeveloped code, the results were compared with Wang et al (2002) and Xin et al (1994). It was observed that, Nu increases and the friction factor and fin efficiency decrease with an increase in the Reynolds number.…”

Section: Plate Finsmentioning

confidence: 99%

A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

Kumar

Joshi

Nayak

et al. 2015

Sadhana

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“…The wavy fin extended surfaces are recognized by the wavy corrugations which boost the heat transfer performance in contrast to the plain plate surfaces. In last decades, several efforts have been devoted to investigate the fundamentals and performance related issues in different experimental works (Kim, Youn et al 1996, Wang, Fu et al 1997, Wang 1999, Yan and Sheen 2000, Wang, Hwang et al 2002, Pirompugd, Wongwises et al 2006, Junqi, Jiangping et al 2007, Kim, Ham et al 2008, Wang, Liaw et al 2011, Dong, Chen et al 2012, Dong, Su et al 2013, Du, Feng et al 2013, Wu, Wu et al 2014. Also a number of numerical attempts have been accomplished in 2D/3D analysis (Jang and Chen 1997, Bhuiyan, Zaman et al 2010, Bhuiyan, Islam et al 2011, Glazar, Trp et al 2012, Gong, Min et al 2013, Bhuiyan, Amin et al 2014, Lin, Wang et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Effects of Geometric Parameters for Wavy Finned-Tube Heat Exchanger in Turbulent Flow: A CFD Modeling

Bhuiyan¹,

Amin²,

Naser³

et al. 2015

Frontiers in Heat and Mass Transfer

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In this study, the effects of thermal and hydraulic characteristics of wavy fin and tube heat exchanger are investigated. Simulation has been carried out by a commercial computational fluid dynamics code, ANSYS CFX12.0. The main objective of this study is to investigate the flow characteristics in turbulent flow. Results are predicted for the turbulent flow regime (2100≤Re≤7000) and compared with author's previous work for laminar (400 ≤Re≤1200) and transitional (1300≤Re≤2000) flow regime. Regarding turbulence, the k-ω model was used to predict the turbulent flow characteristics with 5% turbulence intensity. Predicted results were compared with the experimental data for the purpose of validation and the discrepancy is found within 10% in error range. Parametric study was conducted for different pitches and wavy angles. Flow characteristics obtained for the turbulent range is in line with the pattern observed in laminar and transitional ranges. This study demonstrates a clear understanding and relationship of among different flow ranges and the effects of different geometric parameters on the performance of heat exchanger.

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“…They also gave correlations for use in describing the Colburn factor and friction factor. (Wang et al 2002) proposed the most updated heat transfer coefficient and friction factor correlations wavy fin-and-tube heat exchangers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of 3d Thermal and Hydraulic Characteristics of Wavy Fin-and-Tube Heat Exchanger

Bhuiyan¹,

Islam²,

Amin³

2012

Frontiers in Heat and Mass Transfer

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This numerical analysis presents the airside performance of a wavy fin-and-tube heat exchanger having 4 row configurations considering steady, incompressible and 3D flow using Commercial CFD Code ANSYS CFX 12.0. Results are presented in the form of friction factor (f), Colburn factor (j) and efficiency index (j/f). The numerical procedure has been validated by comparison with published numerical and experimental results and good agreement has been observed. A series of numerical calculations have been carried out in order to analyze the influence of various geometric characteristics on different fields as well as on the heat transfer and pressure drop and efficiency within a heat exchanger. The effects of longitudinal pitch (Ll), transverse pitch (Lt), Fin Pitch (Fp), wavy angle (Wa) and inlet flow angle (α) on wavy fin-and-tube heat exchanger are studied. Different inlet flow angles such as 0 , + 17.5˚, -17.5˚, +35˚ and -35˚ are employed normal to the face of the heat exchanger in order to investigate the performance of inlet flow angles. There is a strong correlation between the response of the flow efficiency, pressure drop and heat transfer performance to these parameters.

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Empirical correlations for heat transfer and flow friction characteristics of herringbone wavy fin-and-tube heat exchangers

Cited by 112 publications

References 7 publications

A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

Effects of Geometric Parameters for Wavy Finned-Tube Heat Exchanger in Turbulent Flow: A CFD Modeling

Numerical Study of 3d Thermal and Hydraulic Characteristics of Wavy Fin-and-Tube Heat Exchanger

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