中文摘要：

对氨水混合工质动力／制冷正逆耦合循环进行了模拟计算分析，该循环通过分流、精馏、吸收冷凝，满足了不同热力过程对工质氨浓度的不同需求。选取热效率η、烟效率ε等指标作为评价准则，当循环透平进汽参数为375℃／7000kPa时，玎约为20％，韵为40％。对循环重要参数分流比S、基本工质氨质量浓度X变化对热力性能、评价准则的影响进行敏感性分析，讨论不同X下如何设置分流比S使循环能量利用更为合理。研究表明：综合考虑循环功冷联供性能、经济性能等因素，建议分流比S取0.4左右，基本工质氨质量浓度X取0．28-0．32。如需较大的冷输出，可适当加大S及X，但S过高（〉0．8）循环热力性能会恶化。

英文摘要：

An ammonia absorption power/refrigeration combined （APC） cycle was simulated and analyzed. The desirable working fluid ammonia concentrations in both cycle heat addition and condensation process were maintained by introducing a split/absorption condensation process. The system performance was evaluated in terms of energy and exergy efficiencies, which were found to be about 20% and 40% with the turbine inlet parameters being 375 ℃/7 000 kPa. Parametric sensitivity study was conduced to investigate the influence of some key parameters, including the split fraction S and the basic working fluid ammonia concentration X, on the cycle thermodynamic performance. It is found that there exist optimal S values around 0.4 which maximize the efficiencies, and the desirable X range is 0.28-0.32. Higher S and X favor the refrigeration output, but too high S （〉0.8） deteriorates the system performance.