小型燃气轮机CCHP系统变工况性能入口加热调控研究  

Effect of the Inlet Air Heating on Part Load Performance of a Combined Cooling,Heating and Power(CCHP) System Driven by the Small Scale Gas Turbine

作　　者：陈强 韩巍[2] 刘润泽 王泽峰 CHEN Qiang;HAN Wei;LIU Runze;WANG Zefeng(China United Gas Turbine Technology Corporation,Beijing 102209,China;Insititute of Engineering Thermophysies,Chinese Academy of Science,Beijing 100190,China)

机构地区：[1]中国联合重型燃气轮机技术有限公司,北京102209 [2]中国科学院工程热物理研究所,北京100190

出　　处：《燃气轮机技术》2018年第2期29-36,共8页Gas Turbine Technology

摘　　要：提出了一种利用冷热电联产系统(CCHP)低温烟气与环境空气混和加热控制压气机入口温度,提升燃气轮机冷热电系统变工况性能的方法,并以1.9 MW小型燃气轮机OPRA16为例,建立了CCHP系统模型,分析了调控方法的效果、机理。结果表明,入口混和加热可以有效改善冷热电联产系统变工况下系统性能,并扩展系统节能运行范围。与传统燃料流量调控方法相比,新型调控手段下夏季制冷与冬季供热模式下系统节能率分别提升5.7%和21.6%。The combined cooling,heating and power（ CCHP） system driven by a small scale gas turbine is a booming new technology for efficient and clean production of energy. However,because of the fluctuations in the energy demand,the CCHP system frequently runs under off design points,especially under part load conditions,which results in performance deterioration. This paper presents a novel power regulation method of compressor inlet air heating for the part load operation of the CCHP system. The novel method is performed by recirculating a fraction of the low temperature exhaust gas to the inlet of the gas turbine and thereby adjusting the inlet air temperature. A mathematical model of the CCHP system was set up,of which the small scale gas turbine OPRA16 simulation was implemented using the Gate Cycle software and calibrated by the real gas turbine data. The part load performance of the CCHP system by the novel power reduction method was compared with the conventional fuel flow method systematical implemented on most engines.Analysis results show that the Fuel Energy Saving Ratio（ FESR） was enhanced by 5. 1% point in summer and 21. 6% point in winter.The conclusion can be drawn that the CCHP system in both summer and winter under the novel method achieves more energy saving than the conventional power reduction method.

关 键 词：小型燃气轮机 冷热电联产系统 变工况性能 入口加热 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]