燃气轮机热电联供系统性能评估案例  

Performance Evaluation Case of a Gas Turbine-based Heat-and-Power Cogeneration System

作　　者：李锋[1] 赵玺灵[2] 付林[2] 

机构地区：[1]北京清华城市规划设计研究院能源所,北京10084 [2]清华大学建筑技术科学系,北京100084

出　　处：《热能动力工程》2010年第1期34-38,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家863基金资助项目(2006AA05Z252)

摘　　要：对某供热厂的燃气轮机热电联供系统进行了研究,将燃煤分产和燃气分产进行了全方面的比较,其性能评价对合理应用CHP有重要作用。在热电分产的节能性方面,以燃气-蒸汽联合循环电厂和燃气锅炉作为比较的基准线,全年平均节能率为8.9%;在运行经济性方面,燃气轮机系统与燃煤锅炉分产相比,每年节省46万元,与燃气锅炉分产相比,每年节省182万元,且节省费用随着电价的增加而增加,随着气价的增加而减少。另外,与燃煤锅炉分产相比时,还随着煤价的增加而增加;在排放物方面,燃气轮机联供系统与燃煤分产和燃气分产对比,NOx减排量并不显著,而其余排放物有明显地减少。燃气轮机系统与燃煤以及燃气锅炉相比具有一定的优越性,在设计合理的情况下具有良好的前景。A gas turbine heat-and-power cogeneration system in a heat supply plant was studied and compared comprehensively with a coal-fired and gas-fired cogeneration system. The performance evaluation played an important role in rationally utilizing cooling-heating-and-power (CHP) energy. Regarding the energy-saving property of the heating and power cogeneration system,when the gas-steam combined cycle power plant and the gas-fired boiler serve as a reference for comparison,the annually averaged energy-saving rate hits 8.9%. In a comparison of the operation economy,when the gas turbine system is compared with the coal-fired boiler system,a lump sum of RMB 460,000 yuan can be saved each year,and an amount of RMB 1.82 million yuan,saved annually in comparison with the gas-fired boiler system. In the meantime,the cost saving will increase with an increase of the kilowatt-hour price and decrease with an increase of the gas price. In addition,when the gas turbine system is compared with the coal-fired boiler one,the cost saving will increase with an increase of the coal price. As regards emissions,when the gas turbine-based cogeneration system is compared with the coal-fired and gas-fired boiler system,NOx emissions are not reduced remarkably,but other emissions are lowered conspicuously. The gas turbine system features a definite edge in comparison with the coal-fired and gas-fired boiler system and will enjoy bright prospects in case a rational design is ensured.

关 键 词：燃气轮机 热电联供 锅炉 性能比较 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程] TM611.3[电气工程—电力系统及自动化]