Thermal-Hydraulic Study of Multi-Louvered Fins in Compact Heat Exchangers and Recommendations for Improvement

Bahrami, Salman; Rahimian, Mohammad Hassan; Mohammadbeigi, Hasan; Hosseinimanesh, Hossein

doi:10.1615/jenhheattransf.2011002708

Cited by 5 publications

(2 citation statements)

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“…The results showed that the enhancement level of the louvered fin was considerably higher than that of the plain fin and the fin with winglets. Bahrami et al [34] studied the effects of geometrical parameters of compact heat exchangers both numerically and experimentally. The results showed that the flow was in the direction of the fin (duct-directed flow) at low louver angles, but at high louver angles, flow was almost aligned with the louvers (louver-directed flow).…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Air-Side Thermal Hydraulic Performance of a Louvered-Fin and Flat-Tube Heat Exchanger at Low Reynolds Numbers

Erbay

Uğurlubilek

Altun

et al. 2016

Heat Transfer Engineering

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In this study, the air-side heat transfer and fluid flow characteristics of a louvered-fin and flattube type heat exchanger used in the household refrigerators were investigated numerically.Louver angles of 20º, 24º, 28º, and 32º and fin pitches of 1.50, 2.00, and 2.50 mm were tested.To represent domestic refrigeration systems, the simulations were conducted for low Reynolds numbers, between 223 and 573. The results were evaluated using the volume goodness factor for the air side. The best performance was obtained with louver angle of 20˚ and fin pitch of 1.50 mm at Reynolds number of 229 over the investigated cases. It was demonstrated that Colburn jfactor, friction factor, Stanton number and volume goodness factor did not change linearly with respect to the parameters considered.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Air-Side Thermal Hydraulic Performance of a Louvered-Fin and Flat-Tube Heat Exchanger at Low Reynolds Numbers

Erbay

Uğurlubilek

Altun

et al. 2016

Heat Transfer Engineering

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“…Sunden (2007) presented the results from various examples of application of computational fluid dynamics (CFD) methods for real heat exchangers in order to demonstrate how such methods can be used in the research, development and design of heat transfer equipment. Bahrami et al (2012) studied the effects of geometric parameters of compact heat exchangers numerically and experimentally. Conservation equations of mass, momentum and energy were solved using the finite volume method in various heat and flow conditions.…”

Section: Introductionmentioning

confidence: 99%

Steady state and transient analysis of compact plate-fin heat exchanger fins for generation of design data using CFD

Ranganayakulu

2016

Int Jnl of Num Meth for HFF

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Purpose -The purpose of this paper is to carry out numerical modeling of single-blow transient analysis using FLUENT porous media model for estimation of heat transfer and pressure drop characteristics of offset and wavy fins. Design/methodology/approach -A computational fluid dynamics program FLUENT has been used to predict the design data in terms of j and f factors for plate-fin heat exchanger wavy and offset strip fins, which are widely used in aerospace applications. Findings -The suitable design data in terms of Colburn j and Fanning friction f factors is generated and presented correlations for wavy fins covering the laminar, transition and turbulent flow regimes. Originality/value -The correlations for the friction factor f and Colburn factor j have been found to be good by comparing with other references. The correlations can be used by the heat exchanger designers and can reduce the number of tests and modification of the prototype to a minimum for similar applications and types of fins.

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Round Tubes Having Plain-Plate Fins

Saha

Ranjan

Emani

et al. 2019

Heat Transfer Enhancement in Externally Finned Tubes and Internally Finned Tubes and Annuli

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Thermal-Hydraulic Study of Multi-Louvered Fins in Compact Heat Exchangers and Recommendations for Improvement

Cited by 5 publications

References 0 publications

Numerical Investigation of the Air-Side Thermal Hydraulic Performance of a Louvered-Fin and Flat-Tube Heat Exchanger at Low Reynolds Numbers

Numerical Investigation of the Air-Side Thermal Hydraulic Performance of a Louvered-Fin and Flat-Tube Heat Exchanger at Low Reynolds Numbers

Steady state and transient analysis of compact plate-fin heat exchanger fins for generation of design data using CFD

Round Tubes Having Plain-Plate Fins

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