Numerical simulation of flow and heat transfer of regenerator in rotary air preheater

YU Yuzhen; DI Haikuan; ZHAO Bo; CAI Jingyu; LI Haiying

doi:10.19666/j.rlfd.202006152

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Numerical simulation of flow and heat transfer of regenerator in rotary air preheater

更新时间：2025-09-28

- Numerical simulation of flow and heat transfer of regenerator in rotary air preheater
- Thermal Power Generation Vol. 49, Issue 11, Pages: 95-100(2020)
- 作者机构：
  
  华北理工大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202006152
  CLC： TK223.3+4
- Published Online：03 November 2020，
  
  Published：2020
- 稿件说明：
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YU Yuzhen, DI Haikuan, ZHAO Bo, et al. Numerical simulation of flow and heat transfer of regenerator in rotary air preheater[J]. Thermal power generation, 2020, 49(11): 95-100.
DOI：

YU Yuzhen, DI Haikuan, ZHAO Bo, et al. Numerical simulation of flow and heat transfer of regenerator in rotary air preheater[J]. Thermal power generation, 2020, 49(11): 95-100. DOI： 10.19666/j.rlfd.202006152.

摘要

为研究回转式空气预热器蓄热元件流动与传热特性

采用Fluent软件对3种搪瓷蓄热元件进行数值模拟

获得蓄热通道速度、温度、压力云图及不同雷诺数下努塞特数和阻力系数的变化图像。模拟结果表明:3种板型蓄热元件阻力系数随雷诺数的增加而减小

努塞特数随雷诺数的增加而增加;增加斜波纹的蓄热元件传热性能提高

流动阻力增大

波纹参数是影响蓄热元件流动阻力的重要因素

壁面温度对其影响较小。该结果可为回转式空气预热器蓄热元件的优化设计提供参考依据。

Abstract

To study the flow and heat transfer characteristics of heat storage elements of rotary air preheater

three kinds of enamel regenerative elements are numerically simulated by Fluent software

and the change images of velocity

temperature

pressure and Nusselt number and resistance coefficient at different Reynolds numbers are obtained. The results show that

with the increase of Reynolds number

the resistance coefficient of the above three kinds of plate type regenerators decreases and the Nusselt number increases. The heat transfer performance and the flow resistance of the regenerator increases with the inclined ripple. The ripple parameter is an important factor affecting the flow resistance of the regenerator

and wall temperature has little effect on it. The results can provide reference for optimal design of regenerative elements of rotary air preheaters.

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