摘要
选用烷类工质环己烷为循环工质,利用筛选法设计了进汽温度为150℃,功率为250 k W的有机朗肯循环系统中的向心透平,并利用计算流体力学软件ANSYS-CFX对动静叶栅流场进行三维稳态模拟,验证了设计方法的正确性。在此基础上研究了7种不同出口相对气流角β2对透平效率的影响;结果表明,所设计的ORC向心透平表现出良好的气动性能;并且在β2为32°情况下有较好的叶轮性能和较高的透平效率,能够满足初始设计条件下透平设计的需要。
By using cyclohexane as the proper working fluid, a 250 kW radial inflow turbine is designed based on screening method in this paper. To prove the validity of the design method, the three-dimensional steady state simulation of the cascade flow field was carried out by using the computational fluid dynamics software ANSYS- CFX, which the effect of the efficiency of the turbine was discussed when using seven different relative exit flow angle. It has been showed that the performance is better and the efficiency of the turbine is higher when relative exit flow angle is 32° that is the suitable for designed the turbine.
出处
《电力科学与工程》
2016年第7期44-49,共6页
Electric Power Science and Engineering
关键词
向心透平
出口相对气流角
数值模拟
有机朗肯循环
radial inflow turbine
relative exit flow angle
numerical simulation
Organic Rankine Cycle
