采用槽式太阳能辅热的压缩空气储能冷电联产系统OA

To overcome the issue of requiring additional heat sources during the expansion stage of advanced adiabatic compressed air energy storage(AA-CAES)systems,a combined cooling and power system with compressed air energy storage and auxiliary heating via parabolic trough solar collectors is proposed.The turbine inlet temperature of the CAES system is increased using the solar trough energy,thereby increasing its storage capacity and reducing the consumption of high-temperature heat transfer oil.The heat transfer oil saved via the first coupled parabolic trough solar system is used to drive the[mmim]DMP/CH3 OH compression-absorption refrigeration system.A dynamic mathematical model of the Combined Cooling with Solar Auxiliary(CCSA)system was established based on the conservation laws of mass and energy of each subsystem.The operating conditions of the CCSA system during the energy release phase under design conditions were simulated,and energy and exergy analyses were conducted.The impacts of months,latitude,high-pressure generator temperature,and auxiliary compressor pressure ratio of the refrigeration system on the thermodynamic performance of the CCSA system were investigated.The effective solar utilization efficiency of the CCSA system was compared with that of a conventional solar-driven ammonia power system.Moreover,its energy and exergy efficiencies were compared with those of the AA-CAES and Solar Auxiliary Reheating Compressed Air Energy Storage(SAR-CAES)systems.The results revealed that the effective solar utilization efficiency of the CCSA system was 8.44％to 13.87％higher than that of the solar-driven ammonia power system and its energy and exergy efficiencies were higher than those of the AA-CAES and SAR-CAES systems.