中国科学院青海盐湖研究所机构知识库
Advanced  
ISL OpenIR  > 青海盐湖研究所知识仓储  > 期刊论文
题名: Phase change materials in the ternary system NH4Cl + CaCl2 + H2O
作者: Dong, Ouyang ;  Zeng, Dewen ;  Zhou, Hongyan ;  Han, Haijun
刊名: CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
出版日期: 2011
卷号: 35, 期号:3, 页码:269-275
关键词: Phase change materials ;  Pitzer-Simonson-Clegg thermodynamic model
英文摘要: Solubility isotherms of the ternary system (NH4Cl + CaCl2 + H2O) were elaborately determined at T = (273.15 and 298.15) K by using the isothermal method. In the equilibrium phase diagram, there are two solubility branches corresponding to the solid phases CaCl2 center dot 6H(2)O and NH4Cl. Invariant point compositions are 36.32 wt% CaCl2 and 3.4 wt% NH4Cl at 273.15 K, and 45.86 wt% CaCl2 and 5.22 wt% NH4Cl at 298.15 K. A Pitzer-Simonson-Clegg thermodynamic model was applied to represent the thermodynamic properties of this ternary system and to construct a partial phase diagram of the ternary system at temperatures between (273.15 and 323.15) K. It was found in the predicted solubility phase diagram that the double salt 2NH(4)Cl center dot CaCl2 center dot 3H(2)O, found by other authors at (323.1 and 348.1) K. will disappear at temperatures below 298.15 K. Besides, it was found that there are two peritectic points in the ternary system with peritectic temperatures at 299.65 K and 298.15 K, and the former peritectic point falls just on the line between the composition points of NH4Cl and CaCl2 center dot 6H(2)O. According to phase rule, a solution made of this point will begin to crystallize at 299.65 K and end at 298 K and therefore can be acted as a "pseudo eutectic" phase change material (PCM). A heat storing and releasing experiment of 50 grams of the PCM was carried out, obtaining a satisfying result. (C) 2011 Elsevier Ltd. All rights reserved. Solubility isotherms of the ternary system (NH4Cl + CaCl2 + H2O) were elaborately determined at T = (273.15 and 298.15) K by using the isothermal method. In the equilibrium phase diagram, there are two solubility branches corresponding to the solid phases CaCl2 center dot 6H(2)O and NH4Cl. Invariant point compositions are 36.32 wt% CaCl2 and 3.4 wt% NH4Cl at 273.15 K, and 45.86 wt% CaCl2 and 5.22 wt% NH4Cl at 298.15 K. A Pitzer-Simonson-Clegg thermodynamic model was applied to represent the thermodynamic properties of this ternary system and to construct a partial phase diagram of the ternary system at temperatures between (273.15 and 323.15) K. It was found in the predicted solubility phase diagram that the double salt 2NH(4)Cl center dot CaCl2 center dot 3H(2)O, found by other authors at (323.1 and 348.1) K. will disappear at temperatures below 298.15 K. Besides, it was found that there are two peritectic points in the ternary system with peritectic temperatures at 299.65 K and 298.15 K, and the former peritectic point falls just on the line between the composition points of NH4Cl and CaCl2 center dot 6H(2)O. According to phase rule, a solution made of this point will begin to crystallize at 299.65 K and end at 298 K and therefore can be acted as a "pseudo eutectic" phase change material (PCM). A heat storing and releasing experiment of 50 grams of the PCM was carried out, obtaining a satisfying result. (C) 2011 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1868
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
1-s2.0-S0364591611000289-main[1].pdf(562KB)----开放获取
by-nc-sa
View Download

Recommended Citation:
Dong, Ouyang,Zeng, Dewen,Zhou, Hongyan,et al. Phase change materials in the ternary system NH4Cl + CaCl2 + H2O[J]. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY,2011,35(3):269-275.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Dong, Ouyang]'s Articles
 [Zeng, Dewen]'s Articles
 [Zhou, Hongyan]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Dong, Ouyang]‘s Articles
 [Zeng, Dewen]‘s Articles
 [Zhou, Hongyan]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 1-s2.0-S0364591611000289-main[1].pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院青海盐湖研究所 - Feedback
Powered by CSpace