Air side heat transfer enhancement using radiantly arranged winglets in fin-and-tube heat exchanger

Li, Mingjie; Qu, Jingguo; Zhang, Jianfei; Wei, Jinjia; Tao, Wen‐Quan

doi:10.1016/j.ijthermalsci.2020.106470

Cited by 10 publications

(1 citation statement)

References 32 publications

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“…Heat transfer augmentation is always accompanied by an increase in pressure drop. Mingjie et al considered the impact of increased pressure drop on pumping power to improve heat transfer by mounting a DWVG around the tube [14]. The thermal-hydraulic performance found by them was improved by installing VG around the tubes of the fin and tube heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Enhancement inside Rectangular Channel by Means of Vortex Generated by Perforated Concave Rectangular Winglets

Syaiful

Hendraswari

S.U.

et al. 2021

Fluids

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Passive methods using vortex generators (VGs) to enhance heat transfer have been a concern of researchers in recent decades. This study is intended to investigate the strength of the vortex generated by VGs by trying to reduce the pressure drop in the flow. The present work also takes into account the influence of the vortex intensity on the improvement of heat transfer, which can be indicated by the low value of the synergy angle. Experiments were carried out in the current investigation to validate the results of the numerical simulations in the Reynolds number range of 3102 to 16,132. The study results indicate that the observed heat transfer coefficients from the experimental and simulation results have a similar tendency with relatively small errors. A reduction in pressure drop is observed with the use of perforated concave rectangular winglets (PCRWs) against the nonperforated ones although there was a slight decrease in heat transfer improvements.

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Section: Introductionmentioning

confidence: 99%