A novel eutectic phase-change material CaCl2 center dot 6H(2)O + NH4Cl + KCl

doi:10.1016/j.calphad.2018.08.009

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	A novel eutectic phase-change material CaCl2 center dot 6H(2)O + NH4Cl + KCl
	Dong, Ouyang; Li, Dongdong; Zeng, Dewen
	2018-12
发表期刊	CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
ISSN	0364-5916
卷号	63 页码:92-99
摘要	Peritectic transformation of pure CaCl2 center dot 6H(2)O during its phase-change process limits its application as a phase change material (PCM). After modification by adding other salts, it may turn into eutectic material. In this work, the possibility of CaCl2 center dot 6H(2)O + NH4Cl + KCl as eutectic phase change material is studied by experiment combining computer simulation. At first, solubility isotherms of the quaternary system CaCl2 + NH4Cl + KCl + H2O was experimentally determined at T = 293.15 K. Secondly, phase diagrams of the quaternary system and its sub-system were simulated by a Pitzer-Simonson-Clegg model. The predicted solubility isotherms was found in good agreement with the experimental data at 293.15 K, which shows the model is reliable for this system. The solubility behavior of the system at other temperatures was predicted with the model, and an eutectic point (46.68 wt% CaCl2, 4.65 wt% NH4Cl, 2.70 wt% KCl and 45.97 wt% H2O) with melting temperature at 297.35 K was found existing in this system which is a promising PCM. At last, a heat storing and releasing experiment of 80 g PCM was carried out to check the possibility of the predicted material as PCM, it was found that the predicted material is an excellent PCM with latent heat of 149.6 J/g.
DOI	10.1016/j.calphad.2018.08.009
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34496
专题	盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Dong, Ouyang,Li, Dongdong,Zeng, Dewen. A novel eutectic phase-change material CaCl2 center dot 6H(2)O + NH4Cl + KCl[J]. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY,2018,63:92-99.
APA	Dong, Ouyang,Li, Dongdong,&Zeng, Dewen.(2018).A novel eutectic phase-change material CaCl2 center dot 6H(2)O + NH4Cl + KCl.CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY,63,92-99.
MLA	Dong, Ouyang,et al."A novel eutectic phase-change material CaCl2 center dot 6H(2)O + NH4Cl + KCl".CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY 63(2018):92-99.

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