缓冲水蓄能冷热电联供系统运行策略及性能分析

Operation Strategy and Performance Analysis of Combined Cooling, Heating and Power(CCHP)Systems with Energy Buffer & Storage Module

本文针对冷热电联供系统与建筑用户间能量供需不匹配和部分负荷下设备低效运行问题,提出了以缓冲水蓄能(冷、热)模块为蓄能装置的缓冲水蓄能冷热电联供系统。基于供能运行策略,以分产系统为基准,对比分析了无蓄能型和缓冲水蓄能冷热电联供系统能源、环境和运行经济性指标。结果表明,缓冲水蓄能冷热电联供系统一次能源节约率,二氧化碳排放当量减少率,运行费用节省率相比无蓄能冷热电联供系统夏季典型日分别提高15.56%,24.10%和13.02%,冬季典型日分别提高5.07%,6.25%和4.96%。

Combined Cooling, Heating, and Power（CCHP） system with energy buffer storage module is proposed to solve unbalance between energy supply and demand and inefficient operation of equipment under partial load. Based on the operation strategy, taking Separate Production（SP） system as the benchmark, the energy, environmental and operation economic indexes of the CCHP system with energy buffer storage module are analyzed and compared with the CCHP system without energy storage. The results show that the Primary Energy Reduction Ratio（PERR）, Carbon dioxide Equivalent Reduction Ratio（CERR）, Operational Cost Reduction Ratio（OCRR） of the CCHP system with energy buffer storage module are 15.56%, 24.10%,13.02% respectively higher than the CCHP system without energy storage in summer typical days, 5.07%, 6.25%, 4.96% respectively higher than the CCHP system without energy storage in winter typical days.