Measurements of Specific Heat Capacity of Gaseous R-143a Using a Flow Calorimeter
Measurements of Specific Heat Capacity of Gaseous R-143a Using a Flow Calorimeter
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DOI：
10.1007/s10765-007-0186-y
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发表时间：
2007-05
影响因子：
2.2
通讯作者：
N. Kagawa;A. Matsuguchi;Kiyoaki Watanabe
中科院分区：
文献类型：
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作者：
N. Kagawa;A. Matsuguchi;Kiyoaki Watanabe
测量了气相中R-143 a（1，1，1-三氟乙烷）的等压比热容（cp）。在311 ~ 343 K温度和1.6 ~ 2.4 MPa压力下对R-143 a进行了10次测量。其中一些接近饱和曲线。温度测量的扩展不确定度（k= 2）估计为小于25 mK，压力测量的扩展不确定度估计为小于8 kPa。cp的扩展不确定度估计范围为9至32 J·kg-1·K-1。同时，用已有的状态方程对实验数据进行了评价。
The isobaric specific heat capacity (cp) was measured for R-143a (1,1,1-trifluoroethane) in the gas phase. Ten measurements for R-143a were obtained at temperatures from 311 to 343 K and at pressures from 1.6 to 2.4 MPa. Some of them are close to the saturation curve. The expanded uncertainty (k= 2) of the temperature measurements is estimated to be less 25 mK, and that of the pressure measurements is less 8 kPa. The expanded uncertainty forcpis estimated to range from 9 to 32 J·kg−1·K−1. Also, the experimental data were evaluated with available equations of state.