摘要
0引言
利用物质在恒温相变过程中吸收或释放能量的特性．将暂时不用的能量储存起来．待需要时再加以利用．这类材料统称为相变储能材料．被广泛应用于空调节能、建筑节能、甚至空间技术等方面。相变储能材料包括无机类（结晶水合盐、熔融盐等）、有机类（石蜡类、酯酸类等）以及无机有机复合类。从蓄冷技术来看,
By the means of using repeated crystallization, which Mg（NO3）2·6H2O was the main phase change material, and KNO3, NH4NO3 were the melting point control agent respectively, two kinds of new type of eutectic salt phase change material： Mg（NO3）2·6H2O-NH4NO3（M1） and Mg（NO3）2·6H2O-KNO3（M2） have been prepared, in this paper. Their component which the mass fraction of Mg（NO3）2·6H2O were 0.612 and 0.665 in M1 and M2 respectively have been measured by protracting fake two-components phase diagram. Through the Differential Thermal Analysis（DTA） and Thermogravimetry analysis（TGA） technique, it can be concluded from the experimental results that the melting temperature of Mg（NO3）2·6H2O-NH4NO3 and Mg（NO3）2·6H2O-KNO3 EPCM were 59.5 ℃ and 82.6 ℃, the latent heats of phase change Hfus of the two EPCMs were 35.46 J·g-1 and 79.04 J·g-1, respectively.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2009年第10期1868-1872,共5页
Chinese Journal of Inorganic Chemistry
关键词
共晶盐
蓄热
熔点
差热热重分析
eutectic salt heat storage melting temperature DTA TGA
