由袁晗、张春路（通讯作者）撰写的论文Regenerated air cycle potentials in heat pump applications在国际制冷学报International Journal of Refrigeration, 2015年第51卷在线发表。论文研究了带回热器的空气压缩循环，给出了最优压比公式，并通过数值模拟发现该循环适合于热泵应用的一些特殊性质。该论文曾在11th IIR Gustav Lorentzen Conference on Natural Refrigerants（第11届国际天然工质大会）上宣读，并被大会评为优秀论文，推荐到International Journal of Refrigeration发表。

论文链接：http://www.sciencedirect.com/science/article/pii/S0140700714003466

免费下载链接：http://authors.elsevier.com/a/1QQXyV-Tm4~mA(有效期至2015年3月15日)

论文摘要：Air (reversed Brayton) cycle has been utilized in the area of refrigeration and cryogenics for several decades, but its potentials in heat pump applications were longtime underestimated. In this paper, a thermodynamic model for the regenerated air heat pump cycle with practical compressor, expander and regenerated heat exchanger was developed. Based on the model, the relations between the system performance and the operating parameters were analyzed. The optimal heating COP (coefficient of performance) and the corresponding pressure ratio were derived. Then, air heat pump cycles (regenerated cycle and basic cycle) and vapor-compression heat pump cycles (CO2 trans-critical cycle and R410A subcritical cycle) were numerically compared. The results indicated that the regenerated air heat pump cycle not only gets the heating capacity in line with the heating load under different operating conditions but also achieves higher COP over trans-critical CO2 heat pump cycle in applications of large temperature difference.