针对常规CCHP系统应用过程中所面临的供需两侧热电平衡问题，通过引入ORC系统形成CCHPORC联合循环。同时，通过对系统选型配置与热力学参数的耦合分析，构建“以热定电”、“以电定热”两种模式下的系统运行仿真模型并针对酒店、办公楼和住宅三类典型用户进行定量分析。结果表明：ORC系统的耦合应用有效提升了常规CCHP系统性能；相较于“以热定电”模式，“以电定热”模式下ORC系统的引入对CCHP系统性能提升更显著；而且在热电比较小、电负荷较高的建筑类型中，CCHPORC系统的适用性更强。

To solve the thermalelectric balance between supply and demand sides while applying the conventional CCHP system,the combined CCHP-ORC cycle is proposed by including the ORC unit.Through the coupling analysis of system configurations and thermodynamic parameters,the system simulation framework is developed by considering two typical operating modes,namely,heattracking mode and electricitytracking mode.According to the simulation results of three typical users (hotel,office and residence),the coupling application of ORC system may effectively improve the performance of conventional CCHP system.In addition,compared with the heattracking mode,the combination of ORC unit with the CCHP system illustrates more benefits in the electricitytracking mode.Moreover,the CCHP-ORC system is more applicable in buildings with low heattopower ratio and high electric load.

TK221

国家重点研发计划项目（2018YFB1502900）；上海市科委重点研究项目（18DZ1203200）；上海市晨光计划项目（17CG57）