高精度流体PVTx性质测量实验系统的研制  

Development of New High Accuracy PVTx Measurement Experimental System

作　　者：吴江涛[1] 刘志刚[1] 黄海华[1] 潘江[1] 赵小明[1] 何茂刚[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》2003年第1期5-9,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(59976030);国家重点基础研究发展规划资助项目(2001CB209208).

摘　　要：在对国内外现有流体PVTx性质实验系统分析研究的基础上,结合一些最新的温度、压力及计算机自动测量等技术,研制了一套新的高精度流体PVTx性质实验系统.通过对系统的误差分析表明:新实验系统的温度测量不确定度小于±2mK,压力测量不确定度小于±0 7kPa.利用新的实验系统,对294～353K温度区间的HFC152a饱和蒸气压进行了研究.实验结果表明,HFC152a的测量值与公认文献值的平均偏差小于0 011%,最大偏差小于0 037%.With the new temperature measurment, pressure measurement and data acquisition tecnology, a new experimental system of PVTx measurement is investigated and developed. The analysis results indicated that temperature uncertainty of new PVTx measurement is below 2 mK, pressure uncertainty is below 08 kPa. In addition, the vapor pressure of HFC152a between 294～353 K is measured with the new experimental system, and the experimantal results indicated that the average deviation between experimental data and the equation provided in the literature is below 0011%, and the standard deviation is below 0037%. It's approved that the new experimental system is reliable.

关 键 词：高精度流体 PVTx性质 实验系统 HFC152A 饱和蒸气压 恒温槽 热力学性质 温度测量 压力测量 制冷剂 

分 类 号：TB612[一般工业技术—制冷工程]