Thermal Characteristics of Room Temperature Inorganic Phase Change System Containing Calcium Chloride  

作　　者：GAO Daolin GUO Yafei YU Xiaoping WANG Shiqiang DENG Tianlong 

机构地区：[1]Tianjin Key Laboratory of Marine Resources and Chemistry,College of Marine Science and Engineering,Tianjin University of Science and Technology, Tianjin 300457, P.R.China

出　　处：《Chemical Research in Chinese Universities》2015年第3期452-456,共5页高等学校化学研究（英文版）

基　　金：the National Natural Science Foundation of China（Nos.21306136, 21276194, 21106103, U1407113）, the Training Program for Yangtze Scholars and Innovative Research Team in University, China（No.[2013]373） and the Project of the Innovative Research Team of Tianjin Municipal Education Commission, China（No.TD12-5004）.

摘　　要：A novel inorganic calcium-based phase change material（PCM-Ca） consisted of 47.1%（mass fraction） water, 47.7% calcium chloride, 2% potassium nitrate, 2% potassium bromide and 1.2% strontium chloride with a solid-liquid phase change temperature of 21.4 ℃ was investigated systematically. Among the components of PCM-Ca, calcium chloride and water act as the latent heat storage materials, and potassium nitrate, potassium bromide and strontium chloride work as the modifier, thickener and nucleating agent, respectively. Thermochemical properties including melting point, latent heat, density and thermal conductivity of the PCM-Ca were measured experimentally. The experimental results indicate that the melting latent heat, thermal conductivity at the melting point and density at room temperature for the PCM-Ca are 203.3 kJ/kg, 1.3637 W·m-1·K-l and 1.55×103 kg/m3, respectively. Moreover, a thirty-run-cycling test showed that the PCM-Ca has a good thermal characteristic with no phase segregation or supercooling, and the maximum deviations of latent heat and phase change temperature are only 0.2% and 1.6%, respectively.A novel inorganic calcium-based phase change material（PCM-Ca） consisted of 47.1%（mass fraction） water, 47.7% calcium chloride, 2% potassium nitrate, 2% potassium bromide and 1.2% strontium chloride with a solid-liquid phase change temperature of 21.4 ℃ was investigated systematically. Among the components of PCM-Ca, calcium chloride and water act as the latent heat storage materials, and potassium nitrate, potassium bromide and strontium chloride work as the modifier, thickener and nucleating agent, respectively. Thermochemical properties including melting point, latent heat, density and thermal conductivity of the PCM-Ca were measured experimentally. The experimental results indicate that the melting latent heat, thermal conductivity at the melting point and density at room temperature for the PCM-Ca are 203.3 kJ/kg, 1.3637 W·m-1·K-l and 1.55×103 kg/m3, respectively. Moreover, a thirty-run-cycling test showed that the PCM-Ca has a good thermal characteristic with no phase segregation or supercooling, and the maximum deviations of latent heat and phase change temperature are only 0.2% and 1.6%, respectively.

关 键 词：Phase change material Calcium chloride Latent heat Thermal conductivity 

分 类 号：TQ132.32[化学工程—无机化工] TP333.4[自动化与计算机技术—计算机系统结构]