中文摘要：

离子液体在化工和能源领域应用研究中,其比热及热工特性尤为重要,然而目前相关的比热数据较缺乏.研究主要对离子液体[BMIM][BF4]及其水溶液的比热容进行了测定.测试系统采用耐驰DSC204HP低温高压差热仪,测试精度较高且稳定可靠.实验测试的温度范围为273.15K~423.15K,测试的离子液体摩尔浓度分别为1.0,0.0738,0.1374,0.2098,0.4433,0.6143.同时对[BMIM][BF4]＋H2O溶液的焓进行了计算,并对其单效吸收式制冷循环性能进行了分析.研究结果为离子液体的工业应用提供了可靠的比热容数据,也指出了[BMIM][BF4]＋H2O工质对作为吸收式制冷工质对的可行性和问题.

英文摘要：

In recent years,the industrial application of ionic liquids became more and more attention,but the specific heat data is lack.In this paper,heat capacity properties of the ionic liquid [BMIM][BF4] and aqueous solution were measured with NETZSCH DSC204HP test system,the temperature range of experimental tests 273.15K ~ 423.15K,the molar concentration of aqueous solution were 1.0,0.0738,0.1374,0.2098,0.4433,0.6143.Meanwhile,[BMIM][BF4]＋H2O was analyzed as working pair of single-effect absorption refrigeration cycle.This article provides a reliable heat capacity data for the industrial application of ionic liquids,and also pointed out that [BMIM][BF4]＋H2O as working fluid for absorption refrigeration working pair inadequate.