内燃机联产双源系统与建筑物负荷匹配及运行特性分析

Analysis on Operation Characteristics of the Internal Combustion Engine Dual Source System

基于分布式供能系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,能避免电上网、多种产品相互制约的问题,且可以缓解夏季电力供应紧张而燃气供应却相对过剩的结构性矛盾。文中针对匹配了不同典型建筑物(如宾馆、写字楼、塔楼住宅)冷热负荷的内燃机联产双源系统的性能进行了研究。根据负荷特点进行设备选型,得到匹配不同建筑的内燃机联产双源系统的变工况特性,并对这些内燃机联产双源系统的全年运行进行模拟,最终得出双源系统在实际选型匹配和运行中的特性规律。通过这些规律可以将双源系统的节能性更好的发挥出来,从而更好地起到削峰作用。

As an independent cooling and heating supply system, the dual source air-conditioning system （DSACS） based on distributed energy system （DES） not only has the DES＇s advantages, but also can avoid the problem of interconnecting with public power grid since it has only one product. Based on different types of buildings such as the hotel, the office building and the tower buildings residence community, the characteristics of internal combustion engine dual source system were studied. Equipment selections were done according to the buildings＇ loads. The off-design performances of internal combustion engine DSACS were obtained. Then the all-year operation of the internal combustion engine DSACS based on the typical buildings were simulated. The operation characteristics laws of internal-combustion DSACS were obtaiffed. By these laws, energy efficiency of DSACS was better exerted, and DSACS can better shift peak load.