L-Ayaklı Spiral Kanatlı-Boru Demetlerinde Isı Transfer ve Sürtünme Karakteristiklerinin Deneysel İncelenmesi

Öz

In this experimental study, air side heat transfer and flow characteristics of L-footed spiral fin-and-tube heat exchanger have been analyzed. There were four rows of tubes in the air flow direction and four tubes per row in the heat exchanger. The hot water was flowed through the tubes while the ambient air was flowed cross flow over the tubes. The results were presented as plots of friction factor f  and  Colburn j factor against Reynolds number. The air-side heat transfer coefficient and pressure drop were also presented against frontal air velocity. Additionally, The correlations for j and f factors were also obtained from the experimental data.       

Anahtar Kelimeler

• L-footed spiral fin,Heat exchanger,Extended surface,Heat transfer

Experimental Investigation of Heat Transfer and Friction Characteristics in L-Footed Spiral Fin-Tube Banks

Abstract

In this experimental study, air side heat transfer and flow characteristics of L-footed spiral fin-and-tube heat exchanger have been analyzed. There were four rows of tubes in the air flow direction and four tubes per row in the heat exchanger. The hot water was flowed through the tubes while the ambient air was flowed cross flow over the tubes. The results were presented as plots of friction factor f and Colburn j factor against Reynolds number. The air-side heat transfer coefficient and pressure drop were also presented against frontal air velocity. Additionally, The correlations for j and f factors were also obtained from the experimental data. 

Keywords

• L-footed spiral fin,Heat exchanger,Extended surface,Heat transfer

Kaynakça

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