钛合金螺旋扁管换热器流阻与传热性能实验研究

董新宇 1; 毕勤成 1; 贺宇峰 2; 王腾 1; 桂淼 1

doi:10.7652/xjtuxb201801003

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钛合金螺旋扁管换热器流阻与传热性能实验研究

更新时间：2025-07-09

- 钛合金螺旋扁管换热器流阻与传热性能实验研究
- Experimental Research on the Flow Friction and Heat Transfer Performance in Titanium Alloy Twisted Tube
- 西安交通大学学报 2018年52卷第1期页码：14-19+25
- 作者机构：
  
  西安交通大学动力工程与多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201801003
  中图分类号： TK47
- 网络首发：2018-01-10，
  
  纸质出版：2018
- 稿件说明：
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董新宇 1, 毕勤成 1, 贺宇峰 2, 等. 钛合金螺旋扁管换热器流阻与传热性能实验研究[J]. 西安交通大学学报, 2018,52(1):14-19+25.

Experimental Research on the Flow Friction and Heat Transfer Performance in Titanium Alloy Twisted Tube[J]. 2018, 52(1): 14-19+25.
董新宇 1, 毕勤成 1, 贺宇峰 2, 等. 钛合金螺旋扁管换热器流阻与传热性能实验研究[J]. 西安交通大学学报, 2018,52(1):14-19+25. DOI： 10.7652/xjtuxb201801003.

Experimental Research on the Flow Friction and Heat Transfer Performance in Titanium Alloy Twisted Tube[J]. 2018, 52(1): 14-19+25. DOI： 10.7652/xjtuxb201801003.

摘要

为研究钛合金螺旋扭曲扁管换热器壳侧选用高黏度导热油的传热规律

对钛合金螺旋扁管换热器的壳侧在层流(Re<2 000)与过渡流(2 000<Re<9 000)状态的传热性能进行实验研究

与分别采用钛合金圆管与螺旋槽管作为换热元件的折流板换热器进行比较

根据实验数据并采用多元线性拟合对扁管壳侧的努塞尔数Nu与阻力系数f进行拟合

其最大拟合误差都是±10%。实验结果表明

螺旋扁管换热器的壳侧在层流与过渡流均有明显的强化传热效果

其强化传热指标h/Δp是螺旋槽管换热器的1.7～2.5倍

光管换热器的2.3～4倍。在层流与过渡流状态下

扁管尺寸、Re、Pr对传热影响较大

螺旋扁管换热器特别适合层流换热。

Abstract

To study the heat transfer performance at the shell side of the titanium alloy spiral twisted tube heat exchanger with high viscosity heat transfer oil

experimental research was conducted on the laminar flow(Re<2 000)and transition flow(2 000<Re<9 000)and heat transfer in the titanium alloy twisted tube. A comparison with segmental baffle heat exchanger using ordinary tube and transversally corrugated tube as heat transfer components was carried out. The correlation equations with the Nusselt number and the resistance coefficient of shell side were given according to the results of experiments with a maximum deviation of ±10%. Experimental results indicate that the shell side of the titanium alloy twisted tube heat exchanger shows good performance of heat transfer enhancement

the heat transfer enhancement index h/Δp is 1.7-2.5 times of spiral tube heat exchanger and 2.3-4 times of ordinary tube heat exchanger. In laminar flow and transition flow

Pr and the size of twisted tube have great influences on heat transfer. It shows that the titanium alloy twisted tube heat exchanger is especially suitable for heat transfer of laminar flow.

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references

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