Panjur Kanatlı Isı Değiştiricilerinin Performansının Deneysel ve Hesaplamalı Akışkanlar Dinamiği Yaklaşımı ile İncelenmesi

Bu çalışmada, faklı panjur açılarında ve Reynolds sayılarında panjurlu-kanatlı ısı değiştiricilerinin ısı transferi ve basınç düşüşü karakteristikleri deneysel ve sayısal olarak incelenmiştir. Deneylerde akış yapısını incelemek için kapalı döngü bir su tünelinde boya ile akış görselleştirme yöntemi kullanılmıştır. Panjurlu kanatlı ısı değiştiricilerinin ısıl ve hidrolik karakteristiklerini farklı panjur açılarında ve çalışma şartlarında incelemek için ANSYS Fluent yazılımı ile sayısal çalışmalar gerçekleştirilmiştir. Sonuçlar, sıcaklık eş düzey eğrileri, akım çizgileri, sürtünme faktörü f, Colburn j faktörü ve bunların oranı olan JF faktörü olarak sunulmuştur. Elde edilen sonuçlar, en yüksek ısıl-hidrolik performansa, panjur açısının 20° olduğu durumda ulaşıldığını göstermiştir

Investigation of Louvered Fin Heat Exchangers Performance via Experimental and Computational Fluid Dynamics Approach

In this study, heat transfer and pressure drop characteristics of louvered-fin heat exchangers for various louver angles and Reynolds numbers were investigated experimentally and numerically. In the experiments, a flow visualization method via dye injection in a closed-loop horizontal water tunnel was used to examine the flow structure. Numerical studies were carried out with ANSYS Fluent software to investigate the thermal and hydraulic characteristics of louvered fin heat exchangers for different louver angles and operating conditions. The results are presented as temperature contours, streamlines, friction factor f , Colburn J factor and goodness factor JF. According to the obtained results, when the louver angle is 20 °, the thermal-hydraulic performance is the highest.

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