摘要
改进了实验室原有的pvT实验台,测量了HFC-227ea气相pvT性质。膨胀法和等容法相结合,仅需一次充注,沿10条定容线测量了共80组实验数据。实验数据的温度范围为310-410K,压力最大到3.2MPa。首先对超临界410K等温线的数据进行了膨胀法分析,建立了压力和密度关系。以此为基础,获得了各条定容线的密度。建立了HFC-227ea的气相状态方程,与已发表的HFC-227ea的pvT数据进行了比较,实验数据的最大压力偏差小于0.07%,与其他人实验数据也符合良好。状态方程还能精确计算气相声速,与实验数据的最大偏差小于0.05%,说明数据和状态方程都是准确可靠的。
The Burnett pvT measurement system was improved. Eighty pressure - volume - temperature data points for HFC - 227ea in the gaseous phase were measured using Burnett - isochoric methods. HFC - 227ea sample was filled in the apparatus only once. The experimental data were collected along 10 isochores for temperatures from 3]0 - 410 K and pressures up to 3.2 MPa. The density of each isochore was based on the pressure - density relationship at 410 K, which was obtained from the Burnett analysis. A three - term truncated virial equation of state （EOS） was developed for gaseous pvT property of HFC - 227ea. The pvT data and acoustic data calculated with the present viral EOS agree well with the experimental data, respectively.
出处
《制冷学报》
CAS
CSCD
北大核心
2006年第5期36-39,共4页
Journal of Refrigeration
基金
国家自然科学基金资助项目(50225622)
关键词
工程热物理
热力性质
膨胀定容法
HFC-227EA
状态方程
Engineering thermophysics
Thermodynamic properties
Bumett- isochoric method
IFC- 227ea
Equationof state
