Enhanced Thermal-Hydraulic Performance of a Wavy-Plate-Fin Compact Heat Exchanger: Effect of Corrugation Severity

Muley, Arun; Borghese, Joseph B.; White, Steve; Manglik, Raj M.

doi:10.1115/imece2006-14755

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…They considered two different thermal conditions; the constant wall temperature which is typical in the refrigerant-air or liquid-air exchangers, and the constant wall heat flux which is normally encountered with the equal heat capacity air/gas-to-air/gas or liquid-to-liquid fluid streams. Muley et al (2006) conducted both the experimental and the computational studies for the sinusoidal wavy channels. They presented experimental j and f measurements for the flow rates in the Re range from 500 to 5,000.…”

Section: Liquids As the Working Fluidmentioning

confidence: 99%

New correlations for wavy plate-fin heat exchangers: different working fluids

Khoshvaght-Aliabadi

Hormozi

Rad

2014

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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Purpose – The main purpose of this paper is the generation of the heat transfer and pressure drop correlations by considering three working fluids, namely air, water, and ethylene glycol, for the wavy plate-fin heat exchangers (PFHEs). Design/methodology/approach – In order to present the general correlations, various models with different geometrical parameters should be tested. Because of the problems, such as difficult, long time, and costly fabrication of the wavy fins in experimental tests, computational fluid dynamics (CFD) calculations can be a useful method for the generation of the heat transfer and pressure drop correlations with eliminating the experimental problems. Hence, the effective design parameters of the wavy plate-fin, including fin pitch, fin height, wave length, fin thickness, wave amplitude, and fin length, and also their levels were recognized from the literature. The Taguchi method was applied to formulate the CFD simulation work. Findings – The simulation results were compared and validated with an available experimental data. The mean deviations of the Colburn factor, j, and Fanning friction factor, f, values between the simulation results and the experimental data were 3.74 and 9.07 percent, respectively. The presented air correlations and experimental data were in a good agreement, so that approximately 95 percent of the experimental data were correlated within ±12 percent. The j factor values varied for the different working fluids, while the f factor values did not sensibly change. Practical implications – The presented correlations can be used to estimate the thermal-hydraulic characteristics and to design of the compact PFHE with the wavy channels. Originality/value – This manuscript presents the new correlations for the compact PFHEs with the way channels by considering all the geometrical parameters and the working fluids with the different Prandtl numbers, 0.7, 7, and 150.

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Section: Liquids As the Working Fluidmentioning

confidence: 99%

New correlations for wavy plate-fin heat exchangers: different working fluids

Khoshvaght-Aliabadi

Hormozi

Rad

2014

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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“…Webb and Kim (2005) summarized briefly much of the significant work in wavy channel analysis. Muley et al (2006) investigated experimentally and computationally enhanced forced-convective heat transfer behavior of air flows (Pr ∼ 0.7) in a compact heat exchanger with three-dimensional, sinusoidal-wavy-plate fins. They explored plate-fins with three different corrugation aspect ratio γ = (2A/λ) = 0.0667, 0.1333, and 0.2667.…”

Section: Literature Reviewmentioning

confidence: 99%

Models for Pressure Drop and Heat Transfer in Air Cooled Compact Wavy Fin Heat Exchangers

Awad

Muzychka

2011

J Enh Heat Transf

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A detailed review and analysis of the thermal-hydrodynamic characteristics in air-cooled compact wavy fin heat exchangers is presented. New models are proposed which simplify the prediction of the Fanning friction factor f and the Colburn j factor. These new models are developed by combining the asymptotic behavior for the low Reynolds number and laminar boundary layer regions. In these two regions, the models are developed by taking into account the geometric variables such as: fin height (H), fin spacing (S), wave amplitude (A), fin wavelength (λ), Reynolds number (Re), and Prandtl number (Pr). The proposed models are compared with numerical and experimental data for air at different values of the geometric variables obtained from the published literature. The new models for f and j cover a wide range of the Reynolds number. Since the model is based analytically, it will also allow for proper design assessment of heat exchanger performance.

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