努塞尔数
鳍
材料科学
强化传热
传热
热交换器
机械
管(容器)
螺旋(铁路)
横截面
流量(数学)
传热系数
复合材料
热力学
机械工程
物理
结构工程
雷诺数
工程类
湍流
作者
Danfeng Zhang,Liang Zhao,Hongzhou Dong,Rui Wu
标识
DOI:10.1016/j.csite.2023.103689
摘要
The integral rolled spiral finned tube (IRSFT) represents a novel variant of low carbon steel heat exchanger components. The unique feature of IRSFT is the integral structure of its fins and base tube, with the fin section exhibiting an isosceles trapezoidal shape, thereby enhancing its heat transfer performance. However, the dearth of comprehensive studies on the heat transfer and flow resistance characteristics of IRSFT has impeded its widespread application in engineering projects. To address this gap, this study undertakes an experimental investigation into the heat transfer and flow resistance properties of IRSFT bundles. The findings reveal that the Nusselt number (Nu) escalates with an increase in both transverse and longitudinal pitch. Furthermore, Nu initially increases and subsequently decreases with a rise in fin pitch and fin height. Concurrently, the Euler number (Eu) diminishes with an increase in fin pitch, fin height, transverse pitch, and longitudinal pitch. Within the parameters of this experimental study, IRSFT demonstrated superior heat transfer performance and reduced flow resistance compared to serrated spiral finned tube and spiral finned tubes. This study also proposes a novel experimental correlation for predicting Nu and Eu for IRSFT bundles, thereby providing a theoretical foundation for the industrial application of IRSFT.
科研通智能强力驱动
Strongly Powered by AbleSci AI