由邵亮亮和张春路（通讯作者）撰写的论文Thermodynamic transition from subcritical to transcritical CO2 cycle在国际制冷学报International Journal of Refrigeration, 2016年第64卷在线发表。论文提出了若干关于跨临界二氧化碳物性及循环的新概念及计算公式，有助于将传统亚临界循环的研究结论直接推广到跨临界循环，为跨临界循环的研究开辟了新途径。论文链接：http://www.sciencedirect.com/science/article/pii/S0140700716000244

论文摘要：

Transcritical CO2 cycle has been widely investigated fundamentally and practically. However, transition between subcritical and transcritical CO2 cycles has not yet been well studied. In this work, temperature at maximum constant-pressure specific heat (pseudocritical temperature) in supercritical region is regarded as the extension of saturation temperature in subcritical region. The existing vapor pressure equation is therefore extended to well fit the pseudocritical temperature. Moreover, the relation between the optimal high pressure of transcritical cycle and the condensation pressure of subcritical cycle is developed. It turns out that the optimal high pressure starts at subcritical region near the critical point. Accordingly, three approaches including the optimal high pressure equation, the optimal overpressure ratio equation, and the extended optimal subcooling equation are proposed to define the optimal operating condition of CO2 cycle. This work demonstrated that knowledge of subcritical cycle can be transitioned to characterize the transcritical cycle.