Precise measurements of the PρTx and critical parameters forCO2/hydrocarbon mixtures in the super-critical region

在液态、超临界和饱和区对二氧化碳/烃混合物的pptx性质、饱和性质和临界参数进行了精确的测量，这些混合物有望成为制冷和热泵系统的长期替代品。结果表明，在较宽的温度、压力、密度和组成范围内，获得了可靠的测量数据。将得到的数据与现有的热力学性质模型进行了系统的比较，从而证实了模型改进的必要性。

The precise measurements of PpTx property, saturation properties,and critical parameters have been performed in the liquid, super-critical, and saturationregions for the CO2/hydrocarbon mixtures, which are expected as long-term alternatives forrefrigeration and heat-pump systems. As the results, the reliable measurement data wereobtained in the wide ranges of temperatures, pressures, densities, and compositions. Theobtained data were systematically compared with the available thermodynamic propertymodels, from which the necessity of the improvements of the models could be confirmed.