热网回水温度对空冷机组高背压供热影响的综合分析  

Comprehensive Analysis of Influence of Return Water Temperature of Heat Supply Network on High Back Pressure Heating of Air Cooling Unit

作　　者：王建勋 WANG Jian-xun(CHN Energy Longyuan Blue Sky Energy Conservation Technology Co.,Ltd.)

机构地区：[1]国能龙源蓝天节能技术有限公司

出　　处：《电站系统工程》2023年第2期50-52,共3页Power System Engineering

摘　　要：介绍了高背压供热技术原理及热力系统,对高背压供热技术进行了综合分析,详细分析了不同热网回水温度对单机机组经济性的影响,并针对不同热网回水温度下的单机机组经济性进行了比较分析。结果表明:保持供热负荷不变,热网回水温度45℃比热网回水温度40℃的单机发电煤耗增加了9.52 g/kW·h,1GJ供热量煤耗增加了3.44 kg/GJ;热网回水温度50℃比热网回水温度40℃的单机发电煤耗增加了18.72 g/kW·h,1GJ供热量煤耗增加了6.85 kg/GJ;热网回水温度55℃比热网回水温度40℃的单机发电煤耗增加了32.12 g/kW·h,1GJ供热量煤耗增加了9.93 kg/GJ。该高背压供热技术经济效益显著,节能减排效果明显。The principle and thermodynamic system of high back pressure heating technology is introduced, makes a comprehensive analysis of high back pressure heating technology, analyzes the influence of different return water temperature of heat supply network on the economy of single unit, and compares and analyzes the economy of single unit under different return water temperature of heat supply network. The results indicate that keeping the heating load unchanged, the coal consumption of single unit power generation increased by 9.52g/kW·h and the coal consumption of 1GJ heat supply increased by 3.44kg/GJ when the return water temperature of heat supply network was 45℃ compared with that of single unit power generation when the return water temperature of heat supply network was 40℃;the coal consumption of single unit power generation increased by 18.72g/kW·h and the coal consumption of 1GJ heat supply increased by 6.85kg/GJ when the return water temperature of heat supply network was 50℃ compared with that of single unit power generation when the return water temperature of heat supply network was 40℃;the coal consumption of single unit power generation increased by 32.12g/kW·h and the coal consumption of 1GJ heat supply increased by 9.93kg/GJ when the return water temperature of heat supply network was 55℃ compared with that of single unit power generation when the return water temperature of heat supply network was 40℃. The technology of high back pressure heating is reliable with remarkable economic benefit and obvious effect of energy saving and emission reduction, and has a broad application prospect in the field of heating.

关 键 词：高背压 空冷机组 供热技术 经济性 节能减排 

分 类 号：TK11[动力工程及工程热物理—热能工程]