高压壬酸乙酯比定压热容的实验测量与关联

Isobaric heat capacity of ethylnonanoate under high pressure: measurement and correlation

中文关键词: 壬酸乙酯  高压  比定压热容  流动法

英文关键词: ethyl nonanoate  isobaric heat capacity  high pressure  flow calorimeter

中文摘要:

      壬酸乙酯是生物柴油的主要组分之一,其热物理性质是生物柴油制备及应用过程设计的基础数据。利用流动型量热法高压流体比定压热容实验测量系统对壬酸乙酯在温度为303.00~393.00K、压力为0.10~25.00MPa范围内的比定压热容进行了测量,该系统比定压热容的测量不确定度为0.98%。通过实验数据研究了壬酸乙酯比定压热容的变化规律,并对壬酸乙酯比定压热容的实验数据进行了关联,其计算值与实验值之间的最大偏差为0.54%。

英文摘要:

      Ethyl nonanoate is one of the main components of biodiesel, and its thermophysical properties are the basic data for the design of manufacture and application of biodiesel. The isobaric heat capacity of ethyl nonanoate at temperatures from 303 to 393K and at pressures from 0.1 to 25.0MPa was measured by a flow method system in thiswork. The extended uncertainties of isobaric heat capacity was estimated to be 0.98%. By the analysis of the phenomenon of experimental data of the isobaric heat capacity of ethyl nonanoate, a new accurate correlation of the isobaric heat capacity of ethyl nonanoate was established. The maximum relative difference between calculate values and experiment results was 0.54%.