İç İçe Borulu Isı Değiştiricide Zıt Akışta Türbülatör Kullanımının Basınç Değişimine Etkisinin Sayısal Olarak İncelenmesi

Baysal, Eşref; Solmaz, Özgür; Ökten, Mert; Başeski, Yasin

doi:10.31202/ecjse.871896

Cited by 1 publication

(1 citation statement)

References 16 publications

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“…In the study the flow paths of the air coming from the outside with the help of the fan were observed. Baysal et al [30] examined the effect of using turbulator in a counter-flow heat exchanger. Friction factor and pressure drop characteristics were studied for empty and different pitch tabulator models for Re number range of 4000-26000.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Cooling an Industrial Roller by Using Swirling Jets

Kılıç

Sahin

Demircan

et al. 2022

ECJSE

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Effective cooling of industrial rollers has prime importance to prevent the quality degradation of the system and product. High temperature difference on the roller surface may result in thermal stresses and can cause deformations on roller surface and product. In order to prevent these deformations, cooling of an industrial roller by using swirling jets is investigated for different parameters numerically in this study. Effects of Reynolds number, surface heat flux and variation in inlet temperature of the fluid on the performance of an industrial roller are investigated in terms of temperature difference between inner and outer surface of the roller. ANSYS Fluent CFD program is used to simulate heat transfer and fluid flow in this numerical study. As a result, it is obtained that increasing Re number from 1000 to 1700 causes a decrease of 45.4% in the temperature difference between inner and outer surface of the roller. Increasing surface heat flux from 5000 to 12500 W/m2 has resulted in an increase of 149.4% in difference between inner and outer surface temperature. Increasing coolant fluid inlet temperature from 5 to 20°C has resulted in an increase of surface temperature but there is no significant change in heat transfer characteristics of the system. It is evaluated that the results of this study will contribute to design more effective cooled industrial roller.

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Section: Introductionmentioning

confidence: 99%