摘要
利用基于Burnett法搭建的PVTx性质测试系统测量了混合制冷工质R1234yf/R32在温度为253～313 K范围内、R1234yf的质量分数为20%时的气相PVTx性质.详细介绍了该测量系统基于Burnett法的测量原理和PVTx性质测试系统的实验步骤，并对各种测量误差及不确定度进行了分析.根据实验数据拟合出混合制冷工质的气态维里方程，并比较了第二、第三维里系数与温度的关系.结果表明：实验数据与拟合得到的方程具有较好的一致性，为基础热物性研究和进一步研究替代制冷剂提供了详实的数据.
Based on Burnett method,PVTx experimental system was applied to study the gas phase PVTx property of mixed refrigerant R1234yf/R32 with mass ratio of 20%/80% in the temperature range of 253～313 K in this paper.The principle of Burnett method and experimental procedures of PVTx experiments were described in detail.The measurement error and uncertainty of the experiment were analyzed.According to the experimental data,the Virial equation of the gaseous mixed refrigerant was fitted.The results showed that the experimental data had good agreement with the fitted equation.This paper provides a detailed data for the study of alternative refrigerants and their basic thermal properties.
出处
《能源研究与信息》
2016年第4期201-206,共6页
Energy Research and Information
