Knowledge Management System Of Qinghai Institute of Salt Lakes,CAS
| Phase change materials in the ternary system NH4Cl + CaCl2 + H2O | |
Dong, Ouyang1 ; Zeng, Dewen1,2; Zhou, Hongyan1; Han, Haijun1; Yin, Xia2; Du, Yong3
| |
| 2011-09-01 | |
| 发表期刊 | CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
 |
| 卷号 | 35期号:3页码:269-275 |
| 关键词 | Phase Change Materials Pitzer-simonson-clegg Thermodynamic Model Ammonium Chloride Calcium Chloride |
| 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. |
| 语种 | 英语 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/1868 |
| 专题 | 青海盐湖研究所知识仓储 盐湖资源与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810007, Peoples R China 2.Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China 3.Cent S Univ, Sci Ctr Phase Diagrams & Mat Design & Manufacture, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | 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. |
| APA | Dong, Ouyang,Zeng, Dewen,Zhou, Hongyan,Han, Haijun,Yin, Xia,&Du, Yong.(2011).Phase change materials in the ternary system NH4Cl + CaCl2 + H2O.CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY,35(3),269-275. |
| MLA | Dong, Ouyang,et al."Phase change materials in the ternary system NH4Cl + CaCl2 + H2O".CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY 35.3(2011):269-275. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 1-s2.0-S036459161100（562KB） | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论