摘要
燃气轮机冷热电三联供(CCHP)技术发展前景广阔,但存在部分负荷运行效率不高、热-电输出耦合性强、热电比调节不灵活等问题。构建了集成恒压压缩空气储能(CAES)的新型燃气轮机CCHP系统,建立了压气机、燃烧室、透平、余热锅炉、换热器、喷射器、水泵/水轮机等部件的热力学模型,分析了采用抽气-释气流量调节策略的系统运行特性。结果表明:抽气、释气系数在0~0.2内时,新型系统热电比调节范围为0.58~2.27,一次能源利用率稳定在58.1%~59.5%,[火用]效率不低于32.2%,可实现宽工况高效运行。
Gas turbine combined cooling,heating and power(CCHP)technology has excellent development and application prospects.However,there are many problems such as low efficiency in partial load operation,strong coupling of thermal-electrical output and inflexible regulation of thermoelectric ratio etc.To solve these problems,a novel CCHP system based on gas turbine and constant-pressure compressed air energy storage(CAES)was developed.The thermodynamic models of components such as the compressor,combustion chambers,turbine,waste heat boiler,heat exchanger,injector and water pumps/turbine,were developed and used to analyze the operational characteristics of the CCHP system under an extraction-release gas flow regulation strategy.Results show that when the extraction-release coefficient is between 0 and 0.2,the CCHP system has a thermoelectric ratio regulating range of 0.58-2.27.During the variable load operation process,the primary energy utilization rate of the CCHP system changes within the range of 58.1%-59.5%,and the exergy efficiency is no less than 32.2%.For the developed CCHP system,the high comprehensive energy efficient and flexibility can be achieved under wide operating conditions.
作者
张斌
王光磊
徐震
周广杰
ZHANG Bin;WANG Guanglei;XU Zhen;ZHOU Guangjie(Shandong Electric Power Engineering Consulting Institute Corp.,Ltd.,Jinan 250013,China;School of Physics and Materials Science,Changji University,Changji 831100,Xinjiang Uygur Autonomous Region,China;School of Energy and Power Engineering,Shandong University,Jinan 250100,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2024年第3期369-375,共7页
Journal of Chinese Society of Power Engineering
基金
国家重大专项资助项目(2017-I-0009-0010)。
关键词
压缩空气储能
燃气轮机
CCHP
调节策略
compressed air energy storage
gas turbine
CCHP
regulation strategy
