蓖麻油与二甲醚临界互溶温度实验测量  

Critical Solubility Temperature of Dimethyl Ether and Castor Oil

作　　者：赵小明[1] 张立胜[1] 刘志刚[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《西安交通大学学报》2007年第9期1080-1082,共3页Journal of Xi'an Jiaotong University

基　　金：国家重点基础研究规划资助项目(2001CB209208);国家自然科学基金重点资助项目(50336020)

摘　　要：为测定二甲醚与蓖麻油混合燃料的临界互溶温度,对互溶性实验装置进行了改进.利用改进后的装置,在蓖麻油的质量分数为2.01%-93.03%范围内,测量了16个状态点的蓖麻油与DME的临界互溶温度.结果表明：蓖麻油与DME临界互溶温度在221.46-256.62 K之间.临界互溶温度随着蓖麻油浓度的增加而增加,在蓖麻油的质量分数为0.5时,临界互溶温度为245 K（-28.15℃）,能够满足高寒地区的使用.将临界互溶温度拟合为蓖麻油质量分数的函数,可供选择合适的DME发动机燃料润滑改进剂时使用.Adding castor oil to dimethyl ether can improve the lubricity of a compression ignition engine and reduce the wear of the precision pairs of an engine fuel system. The critical solubility temperatures for 16 different mass fractions of castor oil were measured with an improved experimental apparatus. The critical solubility temperature was from 221.46 K to 256. 62 K when the mass fractions of castor oil varied from 0. 020 1 to 0. 930 3. The critical solubility temperature rises with the increase of the mass fraction. The critical solubility temperatures is 245 K （-28.15 ℃） when the mass fraction of castor oil is 0. 5 and thus it could be used in cold areas. On the basis of the experimental results, a polynomial of critical solubility temperatures was fitted as a function of the mass fraction of castor oil.

关 键 词：蓖麻油 二甲醚(DME) 临界互溶温度 

分 类 号：TK121[动力工程及工程热物理—工程热物理]