摘要
通过热分析方法 ,对 KAl(SO4) 2 · 1 2 H2 O作为一种低温化学贮热材料进行了研究 ,吸热反应在 60 -1 5 0℃温度范围时的平均反应焓为 449k J· mol-1,放热反应在 60 -2 5℃温度范围的平均反应焓为 3 41 .7k J· mol-1;在正逆反应循环 1 0次的基础上 ,能量利用率达 76.1 %。
Chemical storage material KAl(SO 4) 2·12H 2O was investigated at low temperatures by the heat analytic method. It was revealed that when the temperature of endothermic- and exothermic reaction varies from 60-150℃ and 60-25℃ respectively, the enthalpies of the positive-and reverse reaction are 449 kJ·mol -1 and 341.7kJ·mol -1 . When the circular number of reversible reaction is about 10, the reversible circular reaction show a well energy yield of 76.1%.
出处
《云南师范大学学报（自然科学版）》
2001年第6期65-67,共3页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
云南省教委基金资助项目 (991 2 0 2 9)
