翅片管熔盐对流传热特性研究

樊奇伟; 朱海华; 陈玉爽; 王纳秀; 朱志远

doi:10.11889/j.0253-3219.2017.hjs.40.070602

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翅片管熔盐对流传热特性研究

核能科学与工程 | 更新时间：2021-05-19

- 翅片管熔盐对流传热特性研究
- Heat transfer characteristics of molten salt in finned tube
- 核技术 2017年40卷第7期文章编号：070602
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.中国科学院大学北京 100049
  3.上海科技大学上海 201210
- 作者简介：
  
  [ "樊奇伟, 男, 1992年出生, 2014年毕业于哈尔滨工程大学, 现为硕士研究生, 研究方向为反应堆热工水力", "FAN Qiwei, male, born in 1992, graduated from Harbin Engineering University in 2014, master student, focusing on nuclear reactor thermal-hydraulic" ]
  朱志远, E-mail:zhuzhiyuan@sinap.ac.cn ZHU Zhiyuan, E-mail:zhuzhiyuan@sinap.ac.cn
- 基金信息：
  
  中国科学院战略性先导科技专项(XD02040100)
- DOI：10.11889/j.0253-3219.2017.hjs.40.070602
  中图分类号： TK124
- 收稿日期：2017-04-23，
  
  修回日期：2017-05-02，
  
  纸质出版日期：2017-07-10
- 稿件说明：
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樊奇伟, 朱海华, 陈玉爽, 等. 翅片管熔盐对流传热特性研究[J]. 核技术, 2017,40(7):070602

Qiwei FAN, Haihua ZHU, Yushuang CHEN, et al. Heat transfer characteristics of molten salt in finned tube[J]. Nuclear techniques, 2017, 40(7): 070602
樊奇伟, 朱海华, 陈玉爽, 等. 翅片管熔盐对流传热特性研究[J]. 核技术, 2017,40(7):070602 DOI： 10.11889/j.0253-3219.2017.hjs.40.070602.

Qiwei FAN, Haihua ZHU, Yushuang CHEN, et al. Heat transfer characteristics of molten salt in finned tube[J]. Nuclear techniques, 2017, 40(7): 070602 DOI： 10.11889/j.0253-3219.2017.hjs.40.070602.

摘要

高温熔盐在熔盐堆和太阳能等能源领域有广泛的应用前景。为研究熔盐在强化换热管中的强化传热效果，本文基于三元硝酸盐KNO

-NaNO

（摩尔分数比为53%-40%-7%）与导热油的对流传热实验装置，根据相似理论使用导热油代替熔盐，对翅片换热管湍流区的对流传热特性开展了测量，流体雷诺数（

）变化范围10000-60000。通过威尔逊分离法获得翅片管中湍流区的对流传热系数（

）和努赛尔数（

），基于实验数据与Dittus-Boelter公式，拟合翅片管湍流区的对流传热关联式，实验数据与拟合公式的误差在-7.1%-7.5%之间。与传统对流传热关联式Dittus-Boelter公式对比进行强化传热效果评估，结果表明，翅片管的强化传热效果为光滑管的2.32-3.63倍。

Abstract

Background

High-temperature molten salt has been considered as medium for heat transfer in molten salt reactors and energy storage in solar powerdue to its excellent thermal physical properties.

Purpose

This study aims at the heat transfer characteristics of molten saltand the enhanced heat transfer effect in finned tube.

Methods

Based on the convective heat transfer experimental apparatus of KNO

-NaNO

(53%-40%-7%) molten salt and heat transfer oil

the heat transfer characteristics of turbulent region in finned tube was studied.The convective heat transfer characteristics of molten salt in finned tube were analyzed on the basis of experimental data

and a new correlation was proposed by the least squares fitting method. Furthermore

the effect of enhanced heat transfer of finned tube was discussed based on above analysis.

Results andConclusion

The error between the experimental data and the fitting formularis in the range of -7.1% and 7.5%. The Dittus-Boelter convective heat transfer correlation is used to evaluate the effect of heat transfer

and it shows that the enhanced convective heat transfer effect of the finned tube is 2.32-3.63 times of that of smooth tube.

关键词

Keywords

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