绝热压缩空气储能系统冷热电联供与负荷匹配特性  

Matching performance between the trigeneration of an adiabatic compressed air energy storage system and load

作　　者：夏琦 何阳 徐玉杰[2] 陈海生[2] 邓建强[1] XIA Qi;HE Yang;XU Yujie;CHEN Haisheng;DENG Jianqiang(School of Chemical Engineering and Technology,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]西安交通大学化学工程与技术学院,陕西西安710049 [2]中国科学院工程热物理研究所,北京100190

出　　处：《储能科学与技术》2021年第5期1494-1502,共9页Energy Storage Science and Technology

基　　金：国家重点研发计划项目(2017YFB0903600)。

摘　　要：调控绝热压缩空气储能系统(adiabatic compressed air energy storage system,A-CAES)的冷热电产出以匹配供应对象随季节不断变化的负荷,对绝热压缩空气储能系统的实际应用具有重要促进作用。本文构建了绝热压缩空气储能系统的仿真模型,模拟系统充释能过程以探究系统的冷热电输出特性;分析了一个典型生活小区在不同季节的冷热电负荷变化;并将系统冷热电产出与小区住户冷热电需求负荷进行匹配,得到二者之间的匹配性能;最后通过经济性分析对比了常规供能小区与由A-CAES系统提供冷热电的新型小区的供能成本。模拟结果表明:住户冷热量负荷在不同季节差异明显,而电力负荷差异较小。冷冻水流量对冷热电量产出影响较小,应取最低值以提高冷水品质。释能阶段膨胀机前预热热水流量可大幅改变冷热电输出。通过匹配系统冷热电产出特性与小区负荷可得到夏季、春秋季和冬季的最佳预热热水流量为3.9、3.9和1.6 kg/s,夏季采用较高的热水流量使产电量最大化为宜。经济性分析发现由A-CAES系统供能的小区比常规供能小区年供能成本降低了23.1%,年供能成本节省156万元,结合设备成本可得该系统静态投资回收期为15.6年。Adjusting trigeneration of adiabatic compressed air energy storage system(A-CAES)to match the variable loads of the supply objects in different seasons can greatly promote the practical application of A-CAES system.In this paper,the simulation model of A-CAES system was developed.The charging and discharging period of system were simulated to investigate the characteristics of system trigeneration.The cooling,heating and electric load of a typical residential area in different seasons was analyzed.Then the load of residential area and trigeneration of system was matched to find the matching performance between them.Finally,through economic analysis the energy cost of a traditional residential area and a new residential area whose energy is supplied by A-CASE system was compared.The simulation results show that the cooling and heating load of households varies greatly in different seasons,but the difference of electric load is small.The mass flow rate of chilled water has little effect on the cooling,heating and electric output,so the minimum value is suggested to improve the quality of chilled water.The mass flow rate of preheating hot water in the discharging period can greatly change cooling,heating and electric output of system.By matching system trigeneration characteristics and residential load,optimum heating hot water flow for summer,spring and autumn,and winter was selected as 3.9 kg/s,3.9 kg/s and 1.6 kg/s.It is advisable to use higher hot water flow rate to maximize electricity production in summer.The economic analysis found that the annual energy supply cost of the residential area whose energy is supplied by A-CAES system is 23.1%lower than that of the conventional residential area.The annual energy supply cost of residential area decreases 1.56 million CNY.Combined with the equipment cost,the static investment payback period of the system was calculated as 15.6 years.

关 键 词：绝热压缩空气储能系统 变负荷 冷热电三联产 

分 类 号：TK02[动力工程及工程热物理]