供热机组不同抽汽工况下能耗特性数值研究  

Numerical Research on Energy Consumption Characteristics of Heating Units Under Different Extraction Conditions

作　　者：夏雪毛 XIA Xuemao(Guangdong Branch,China Datang Group Co.,Ltd.,Guangzhou,Guangdong 510220,China)

机构地区：[1]中国大唐集团有限公司广东分公司,广东广州510220

出　　处：《自动化应用》2024年第12期138-140,143,共4页Automation Application

摘　　要：供热机组能耗特性的研究对节能减排及实现“碳达峰”和“碳中和”具有重要意义。搭建了350 MW供热机组EBSILON计算模型,主要研究再热压损及凝汽器压力变化时对机组热耗和煤耗的影响。结果表明,当电负荷不变时,煤耗率随着热电比的增大而减小;随着再热蒸汽压损的增大,机组煤耗量和热耗量也增大;随着电负荷越小,再热蒸汽压损对煤耗和热耗的影响越大;机组煤耗量和热耗量随着凝汽器压力的增大而增大,在参数变化范围内,当电负荷为260 MW时,凝汽器压力升到6.0 kPa,发电煤耗变化为1.05 g·(kWh)^(-1)。The research of energy consumption characteristics of heating units is of great significance for energy conservation and emission reduction,as well as achieving"carbon peak"and"carbon neutrality".A 350 MW heating unit EBSILON calculation model was built,mainly studying the effects of reheat pressure loss and condenser pressure changes on unit heat and coal consumption.The results show that when the electrical load remains constant,the coal consumption rate decreases with the increase of the thermoelectric ratio.As the pressure loss of reheated steam increases,the coal and heat consumption of the unit also increase.As the electricity load decreases,the impact of reheat steam pressure loss on coal and heat consumption becomes greater.The coal and heat consumption of the unit increase with the increase of condenser pressure.Within the parameter range,when the electrical load is 260 MW,the condenser pressure rises to 6.0 kPa,and the coal consumption for power generation changes to 1.05 g·(k Wh)^(-1).

关 键 词：供热机组 数值研究 再热压损 凝汽器压力 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]