Numerical investigation of thermal enhancement of plate fin type heat exchanger with creases and holes in construction machinery

Jeong, Chul‐Ho; Kim, Hyung Rak; Ha, Man Yeong; Son, Sung Wan; Lee, Jae Seok; Kim, Pan Yeong

doi:10.1016/j.applthermaleng.2013.09.044

Cited by 30 publications

(12 citation statements)

References 22 publications

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“…Thermal characteristics of the plan and curved vortex generators with or without punching holes in the fin surface were investigated, indicating that vortex generators with holes have higher heat transfer enhancement and lower pressure drop than those without holes [19]. In order to resolve the shortcomings of the louver fin heat exchanger, Chan Hyeok Jeong developed the plate fin with both ceases and holes, which helped to improve heat transfer and could be used under hostile environments [20]. The effects of round and elongated holes were also compared [21].…”

Section: Introductionmentioning

confidence: 99%

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

Xue

et al. 2018

Energies

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The plate fin heat exchanger is a compact heat exchanger applied in many industries because of its high thermal performance. To enhance the heat transfer of plate fin heat exchanger further, three new kinds of wavy plate fins, namely perforated wavy fin, staggered wavy fin and discontinuous wavy fin, are proposed and investigated by computational fluid dynamics (CFD) simulations. The effects of key design parameters, including that of waviness aspect ratios, perforation diameters, staggered ratios and breaking distance are investigated, respectively, with Reynolds number changes from 500 to 4500. It is found that due to the swirl flow and efficient mixing of the fluid, the proposed heat transfer enhancement techniques all have advantages over the traditional wavy fin. At the same time, serration is beneficial to reduce the friction factor, and the breaking technique can reduce heat transfer area. Through the performance evaluation criteria, the staggered wavy fin has an advantage over the small waviness aspect ratio; with increasing waviness aspect ratio, this predominance is gradually surpassed by the perforated wavy fin, and the advantage of the discontinuous fin is the smallest and almost invariable. A maximum performance evaluation criteria (PEC) as high as 1.24 can be obtained for the perforated wavy fin at the waviness aspect ratio γ = 0.45.

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Section: Introductionmentioning

confidence: 99%

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

Xue

et al. 2018

Energies

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“…Yoon et al [25] then calculated results for the thermal design process, cost estimation methodology, effectiveness and crossflow PCHE analysis. Jeong et al [26] proposed enhancements to the plate fin type heat exchanger after modelling a fin type and louver fin heat exchanger configuration. Subsequently, in order to evaluate the grid reliability, friction factor and convergence grid tests were performed.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer and Pressure Drop Characteristics in Straight Microchannel of Printed Circuit Heat Exchangers

Seo

Kim

et al. 2015

Entropy

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Performance tests were carried out for a microchannel printed circuit heat exchanger (PCHE), which was fabricated with micro photo-etching and diffusion bonding technologies. The microchannel PCHE was tested for Reynolds numbers in the range of 100-850 varying the hot-side inlet temperature between 40 °C-50 °C while keeping the cold-side temperature fixed at 20 °C. It was found that the average heat transfer rate and heat transfer performance of the countercurrrent configuration were 6.8% and 10%-15% higher, respectively, than those of the parallel flow. The average heat transfer rate, heat transfer performance and pressure drop increased with increasing Reynolds number in all experiments. Increasing inlet temperature did not affect the heat transfer performance while it slightly decreased the pressure drop in the experimental range considered. Empirical correlations have been developed for the heat transfer coefficient and pressure drop factor as functions of the Reynolds number.

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“…They studied the fluid flow, heat transfer pressure drop and the properties like Nusselt number, friction factor and Colburn factor for various fin configurations. Jeong et al [25] developed a new shape of plate fin heat exchanger by creating holes & ceases on the fin. This is used in construction machinery under the poor environment with very high dust content & where the extraneous materials are produced.…”

Section: Development Of Experimental Analysis and Results In Platmentioning

confidence: 99%

Review of Experimental Analysis and Comparision of Results With Correlations Developed for Colburn Factor (J) and Friction Factor (F) in Plate Fin Heat Exchangers

2017

IJAERD

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Numerical investigation of thermal enhancement of plate fin type heat exchanger with creases and holes in construction machinery

Cited by 30 publications

References 22 publications

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

Heat Transfer and Pressure Drop Characteristics in Straight Microchannel of Printed Circuit Heat Exchangers

Review of Experimental Analysis and Comparision of Results With Correlations Developed for Colburn Factor (J) and Friction Factor (F) in Plate Fin Heat Exchangers

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