直接空冷机组高背压供热系统性能分析  

Investigation on the Performances for High Back Pressure Heating System of Direct Air Cooling Coal Pulverized Power Station

作　　者：弓学敏[1,2] 崔后品 侯轶 杨昊泽[1] GONG Xue-min;CUI Hou-pin;HOU Yi;YANG Hao-ze(College of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,China;Baoding Huadian Power Design ＆ Research Institute Company Limited,Baoding 071051,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,保定071003 [2]保定华电电力设计研究院有限公司,保定071051

出　　处：《汽轮机技术》2018年第4期291-294,298,共5页Turbine Technology

摘　　要：以300MW直接空冷机组供热系统为例,基于矩阵分析理论建立其热力性能计算模型。根据热网供回水温度数据绘制供回水温度分布图,划分出供热初末期和高峰期两个供热阶段,分阶段分析热网供回水温度对高背压供热机组热力性能的影响。结果表明,整个供热期高背压供热方式优于传统供热方式,热网回水温度越低其性能指标越优,在保证机组安全和发电功率的情况下,热网供水温度越高其性能指标越优。Taking direct air cooling units heating system with 300MW as an example, the thermal performance model based on matrix analysis is established. According to the supply and back water temperature data can be plotted, which can be divided into early-last heating period and peak heating priod, the phase analysis of heat supply network for the return water temperature of thermal performance of high back pressure heating units. The results show that the high back pressure heating period heating way is better than the traditional heating method in the whole heating period, and the lower the water temperature of the heat network, the better the performance index, in the case of ensure its safety and power, the higher heat supply network water temperature, the optimal its performance indexes.

关 键 词：余热利用 高背压 供热 性能研究 

分 类 号：TK11[动力工程及工程热物理—热能工程]