摘要
基于现有的ＰＶＴ和比热容测量数据，作者提供了一个ＨＦＣ－３２跨接状态方程。本方程适用于压力从零至３５ＭＰａ，密度从零至１４５０ｋｇｍ－３，温度从１５０Ｋ至４８０Ｋ。比较了ＨＦＣ－３２的热力学性质，包括：压力－比容－温度（ｐｖＴ）、比定容热容、声速、第二维里系数、饱和液密度等的测量值与本状态方程计算值。还给出了ＨＦＣ－３２的饱和蒸气压和饱和液密度的计算式。上述计算式具有较高的精度，可满足工程计算需要。
A 35 term crossover equation of state of HFC 32 has been developed, based on the updated available pressure specific volume temperature ( pvT ) measurements and heat capacity measurements. This equation of state is effective at pressures up to 35 MPa, densities up to 1450 kg·m -3 , and temperatures from 150 K to 480 K, respectively. The accuracy of this equation to calculate the thermodynamic properties such as pvT, saturated liquid density, isochoric heat capacity, speed of sound, second virial coefficient are also presented. Based on the reported experimental data of saturation properties, correlations of vapor pressure and saturated liquid density are also presented. The accuracy of the equations can meet the requirements of engineering applications.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第5期35-39,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
关键词
HFC-32
制冷剂
状态方程
热力学性质
HFC 32
refrigerant
equation of state
thermodynamic properties
vapor pressure
saturated liquid density
specific heat capacity
speed of sound
