某大学城分布式能源站燃机应用溴化锂制冷技术冷却入口空气的方案探讨  

Scheme Discussion on Cooling Gas Turbine Intake Air Using Lithium Bromide Cooling Technology in a University Town Distributed Energy Station

作　　者：谢大幸 石永锋 郝建刚 郑健 王健 

机构地区：[1]华电电力科学研究院,浙江杭州310030

出　　处：《发电与空调》2015年第4期5-8,共4页

摘　　要：利用现有溴化锂吸收式冷水机组,消化大学城暑期过剩高温热媒水冷却燃机入口空气,可降低机组入口空气温度4.2℃,提高联合循环机组出力约1470k W。通过计算分析,简单循环燃气轮机的出力和效率都随着燃机入口空气温度的降低而得到提高,对于整个联合循环而言,机组功率随燃机入口空气温度降低而增加,但是由于下位电站汽轮机及余热锅炉的延滞性影响,其效率基本维持不变,即联合循环机组的发电气耗并不会因为燃机进口空气冷却而得到降低,节能效益不能充分体现,项目可行性不高,联合循环机组进行类似改造时应慎重考虑。Using ready-made lithium bromide absorption water chiller absorb excess heat medium water to cool gas turbine intake air in the university town. It can reduce 4.2 ℃ of the air and increase about 1470 kW of unit output. The gas turbine simple cycle’s output and efficiency are increased with the gas turbine intake air temperature reducing and the com-bined-cycle’s output is also increased, however, the combined cycle’s efficiency does not significantly improve because of the postponable characteristics of the lower power plant steam turbine and HRSG. The power generation gas loss rate is not decreased with the gas turbine intake air cooling, energy-saving benefit is not fully reflected, the project feasibility is lower. The similar reconstruction in the combined-cycle units should be considered cautiously.

关 键 词：分布式能源站 燃气轮机 溴化锂吸收式冷水机组 联合循环效率及出力 

分 类 号：TM611.3[电气工程—电力系统及自动化]