几种典型熔盐冷却剂的热物性研究

金愿; 程进辉; 王坤; 安学会; 马国宏; 张鹏; 黎忠

doi:10.11889/j.0253-3219.2016.hjs.39.050604

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几种典型熔盐冷却剂的热物性研究

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- 几种典型熔盐冷却剂的热物性研究
- Research on thermo-physical properties of several typical molten salt coolants
- 核技术 2016年39卷第5期文章编号：050604
- 作者机构：
  
  1.上海大学上海 200444;
  2.中国科学院上海应用物理研究所嘉定园区上海 201800
- 作者简介：
  
  金愿,男,1989年出生,2012年毕业于郑州大学,现为硕士研究生,从事熔盐热物性方面的工作
  张鹏,E-mail:zhangpeng@sinap.ac.cn
- 基金信息：
- DOI：10.11889/j.0253-3219.2016.hjs.39.050604
  中图分类号： TL343
- 收稿日期：2015-12-22，
  
  录用日期：2016-03-30，
  
  纸质出版日期：2016-01-25
- 稿件说明：
移动端阅览
金愿, 程进辉, 王坤, 等. 几种典型熔盐冷却剂的热物性研究[J]. 核技术, 2016,39(5):050604

Yuan JIN, Jinhui CHENG, Kun WANG, et al. Research on thermo-physical properties of several typical molten salt coolants[J]. Nuclear techniques, 2016, 39(5): 050604
金愿, 程进辉, 王坤, 等. 几种典型熔盐冷却剂的热物性研究[J]. 核技术, 2016,39(5):050604 DOI： 10.11889/j.0253-3219.2016.hjs.39.050604.

Yuan JIN, Jinhui CHENG, Kun WANG, et al. Research on thermo-physical properties of several typical molten salt coolants[J]. Nuclear techniques, 2016, 39(5): 050604 DOI： 10.11889/j.0253-3219.2016.hjs.39.050604.

摘要

熔盐是一种优异的传热介质。热物性数据是熔盐传热应用过程中的关键基础数据。按照制定的样品制备规范、样品测试操作流程和数据处理分析方法

采用差示扫描量热仪(Differential Scanning Calorimetry

DSC)、自主研制的阿基米德法密度仪和旋转柱体式粘度仪、改进的激光闪光法导热仪对FLiNaK、CloKmag和HTS熔盐的熔点、比热容、密度、导热系数、粘度系数进行了实验测量和数据评估。首次系统地提供了FLiNaK和HTS熔盐在熔点以上80 K温区的粘度系数、CloKmag盐的关键热物性数据。为这些熔盐的热工水力设计分析提供了准确可靠的基础数据。

Abstract

Background:

As an ideal coolant

molten salt has been successfully used in molten salt reactor

and its thermo-physical properties have dramatic impact on heat transfer performances. However

the diversity in molten salt pretreatment and preparation induce discrepancies among the existing data which may cause puzzle in its applications.

Purpose:

The aim is to systematically investigate and evaluate thermo-physical properties of FLiNaK and HTS

especially viscosity in abnormal operation temperature range

and measure thermo-physical properties of CloKmag salt accurately.

Methods:

Molten salt coolants were prepared normatively

and their thermo-physical properties were systematically measured through testing instruments including the differential scanning calorimetry

self-developed Archimedes density device

improved thermal conductivity meter based on laser flash method

and self-developed rotating viscometer.

Results:

Through the measurement and analysis abo

we have systematically obtained the thermo-physical properties of FLiNaK

CloKmag and HTS accurately

especially viscosity in abnormal operation temperature range.

Conclusion:

Heat capacity and thermal conductivity of molten salt are almost unaffected by temperature and can be regarded as constants. Viscosity at 80 K above melting point decreases with the increase of temperature and tends to that of room-temperature water in high temperature range. The thermo-physical properties of FLiNaK

CloKmag and HTS can provide accurate and reliable basic data for the application of molten salt.

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