环境温度和进气压力损失耦合作用下的燃气轮机性能

摘要

采用变比热容并考虑油气比变化对系统的影响,建立了一种非线性的考虑容积惯性的双轴燃气轮机动态仿真模型.基于不同的工况,获取进气系统的压力损失变化规律；并耦合燃气轮机在不同环境温度下的实际运行需求,对燃气轮机的性能进行了仿真研究和计算.结果表明:随着燃气轮机工况的增加,进气系统的压力损失按接近2次方规律增加；在高温和高工况条件下,燃气轮机的有效输出功率和热效率下降明显.所得结果可为燃气轮机的优化设计和使用提供理论基础和决策参考.%The influence of the gas-oil ratio ( GOR) is considered with variety specific heat, and ayho-linear simulating model of the gas turbine wit twin-shaft gas-generator is found. Based on the different conditions, the disciplinarian of the pressure loss is found, and the gas turbine performance is simulated aim at the coupling running demands in different ambient temperature. The results proves that the pressure loss increase conform to second party disciplinarian alone with increasing of the working condition, and the efficiency output power and the thermal efficiency are declining obviously in high ambient temperature and working conditions. The results are a foundation for the optimal design and practicality applications.