摘要
根据氢-氧联合循环的特点,建立了相应的物质和能量平衡模型,并在此基础上对简单循环、回热型循环以及再热回热型的效率进行了计算和比较.结果表明:在简单循环的基础上,采用回热系统效率可提高10%;一次再热在回热的基础上可再提高效率2%;同样二次再热也可提高效率2%.因此,燃用氢气的燃气轮机和高压、低压蒸汽轮机组成的联合循环系统,从整体上提高了循环的热效率.此外,氢-氧联合循环具有无温室气体排放、效率高等特点,在今后氢能的大规模发电上有着良好的发展前景.
An equilibrium model of mass and energy transfer was built up according to features of hydrogen/oxygen combined-cycle systems,based on which efficiencies of the simple,heat-recovery and reheat system were calculated and compared.Results show that the efficiency of combined-cycle systems with heat recovery can be 10% higher than that of simple ones,and on the basis of heat-recovery cycle,the efficiency can further be raised by 2% via a single-reheat cycle,and by another 2% via a second-reheat（cycle.） Compared with conventional combined-cycle systems,overall thermal efficiency of the hydrogen gas-steam system can be promoted,which includes a gas turbine,a high-pressure and a low-pressure steam turbine.With features of no greenhouse gas emission and high thermal efficiency,the hydrogen/oxygen combined-cycle system is believed to have bright futures in the development of large-scale hydrogen power generation.
出处
《动力工程》
CSCD
北大核心
2010年第2期156-160,共5页
Power Engineering
关键词
燃气轮机
氢-氧联合循环
氢能
热效率
能量转换
gas turbine
hydrogen/oxygen combined cycle
hydrogen energy
thermal efficiency
energy conversion
