Experimental distribution of phases and pressure drop in a two-phase offset strip fin type compact heat exchanger

Saad, Selma Ben; Clément, Patrice; Gentric, Caroline; Fourmigué, Jean-François; Leclerc, Jean-Pierre

doi:10.1016/j.ijmultiphaseflow.2011.03.009

Cited by 44 publications

(7 citation statements)

References 17 publications

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“…The cross-section shape of fluids changes over the z-coordinate, the fluid between two adjacent parallel fins would be shunted into two parts by the downstream fin, and the fluid in upstream zone would be divided into two parts with the majority of fluid flowing besides downstream fins. This observation relates to the work of Saad et al [11], who discovered a correlation with the friction factor of micro-channels with flow characteristics taken into account.…”

Section: The Velocity Variation Inside the Heat Exchangersupporting

confidence: 83%

“…Jeong et al [9] designed a new PFHE for construction equipment in very dusty environments. Taler and Oclon [10] introduced a method for calculating thermal contact resistance in plain and tube fin exchangers, whereas Saad et al [11] developed a friction factor correlation for microchannels with offset-strip fin geometry. Fernández-Seara et al [12] experimentally analyzed a titanium-brazed PFHE with serrated fins, and established a correlation for the heat transfer coefficient.…”

Section: Literature Reviewmentioning

confidence: 99%

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Untitled

2023

JSE

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This study aims to optimize the structure of compact Plate-Fin Heat Exchangers (PFHE) by incorporating corrugated fins and validating their improved performance through numerical modeling and simulation. The results provide valuable insights for refining application-specific design guidelines and enhancing the performance of PFHEs. Using Computational Fluid Dynamics (CFD), the PFHE geometry was created in SolidWorks and Ansys Fluent, with fins modeled in three layers inside the heat exchanger both with and without a cover. To investigate the fins' performance, flow field, and heat transfer, fin thickness, entry velocities, and locations of water and air were varied across three wavelengths (10, 20, and 30) during the numerical investigation. The analysis focused on the variations in pressure, temperature, and fluid velocity within the heat exchanger. Key findings include the observation that temperature distribution is influenced by the velocities of both water and air, with the upper layer experiencing a temperature increase due to the warm fluid stream, while the opposite effect is observed near the bottom layer. Furthermore, fluid temperature variation in the depth direction is attributed to conductive heat transfer through side plates and convective heat transfer to the surroundings. The outcomes of this study have the potential to reduce the pressure difference generated during heat exchange and increase the thermal efficiency of PFHEs.

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Section: The Velocity Variation Inside the Heat Exchangersupporting

confidence: 83%

Section: Literature Reviewmentioning

confidence: 99%

Untitled

2023

JSE

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“…Saad et al [32] developed a correlation for the friction factor of the micro-channel having offset-strip fin geometry with single phase for laminar to the turbulent flow of air & water. Then, they did a comparison with 3D CFD simulations.…”

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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“…There are limited studies published on this topic for offset strip fins. One of those few studies is released by Saad et al [14], in which the experimental distribution of phases and pressure drop in offset strip fin type compact heat exchangers is given. The experiments are accomplished in a flat vertical compact heat exchanger in which the flow of air and water are examined.…”

Section: Experimental Studies For Influence On Flow and Heat Transfermentioning

confidence: 99%

Comprehensive Study of Compact Heat Exchangers with Offset Strip Fin

Erbay¹,

Öztürk²,

Doɪan³

2017

Heat Exchangers - Advanced Features and Applications

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This chapter is aimed to address the performance of compact heat exchangers with offset strip fin, which have been studied by the researchers in detail for decades. The history and basic features of offset strip fins (OSF) are described first to introduce the fin geometry. Then, the effect of the fin geometry on the performance of the offset strip fin is given from experimental and numerical aspects, respectively. Flow streams evolution under varying offset strip geometries is summarized in order to demonstrate the physical impact on the flow. The thermohydraulic features of the flow in the offset strip fin are investigated by considering the Colburn j-factor and friction (f) factors in diverse flow regimes. Furthermore the criteria, flow area goodness factor j/f, the ratio j/f 1/3 and thermohydraulic performance factor JF, derived from the mentioned dimensionless factors, are also used as a scale of the performance of the structure and reported in the chapter.

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Experimental distribution of phases and pressure drop in a two-phase offset strip fin type compact heat exchanger

Cited by 44 publications

References 17 publications

Untitled

Untitled

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

Comprehensive Study of Compact Heat Exchangers with Offset Strip Fin

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