燃气-蒸汽联合循环的生态学优化  

Ecological Optimization for Combined Cycle of Gas-Steam Turbine

作　　者：谢平[1] 黄跃武[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《动力工程》2009年第6期544-548,共5页Power Engineering

摘　　要：建立了具有热阻、热漏的定常流布雷顿-朗肯联合循环模型,分析了联合循环功率、效率和生态学指标性能,并对其进行了优化;通过数值计算分析了功率、效率和生态学之间的优化关系,并讨论了热漏对联合循环优化性能的影响.结果表明:最大生态学指标下的效率十分接近联合循环可达到的最大效率,布雷顿-朗肯循环是燃气-蒸汽联合循环的一个特例.分析研究结果为燃气-蒸汽联合循环热机的设计提供了一定的依据.A steady combined cycle model of Brayton-Rankine with finite-rate of heat resistance and heat leak was built up. The combined cycle performance about power, efficiency and ecological criterion were analyzed and optimized. And the relations between optimal powers, optimal efficiency and optimal ecological criterion were studied by numerical calculation. The effect of the heat leak on the performance of the system was also discussed. Results show that the efficiency under the maximum ecological index is very close to the highest efficiency to be reached by the combined cycle. The Brayton-Rankine cycle is a special case of gas-steam turbine combined cycle. The analysis and research results provide some theoretical guidance for the design of heat engine with gas-steam turbine combined cycle.

关 键 词：燃气-蒸汽联合循环 布雷顿-朗肯联合循环 热阻 热漏 生态学指标 最优性能 

分 类 号：TK472.5[动力工程及工程热物理—动力机械及工程]