有机工质向心透平变工况特性的数值模拟与极差分析

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张振康¹，曾凡云²，王志奇^1*，夏小霞¹，贺妮¹，胡艳华¹，张建平¹

1. 湘潭大学机械工程学院，湖南湘潭 4110052. 楚天科技股份有限公司，湖南长沙 410600

收稿日期:2018-04-04修回日期:2018-06-29出版日期:2019-04-22发布日期:2019-04-18
通讯作者:张振康

基金资助:国家自然科学基金项目;湖南省自然科学基金

Numerical simulation and range analysis of off-design performance for a radial-inflow turbine

Zhenkang ZHANG¹, Fanyun ZENG², Zhiqi WANG^1*, Xiaoxia XIA¹, Ni HE¹, Yanhua HU¹, Jianping ZHANG¹

1. Institute of Mechanical Engineering, Xiangtan University, Xiangtan, Hunan 411005, China2. Truking Technology Limited, Changsha, Hunan 410600, China

Received:2018-04-04Revised:2018-06-29Online:2019-04-22Published:2019-04-18

摘要/Abstract

摘要： 以R245fa为工质设计向心透平，采用CFD方法对向心透平性能进行全流域三维模拟研究，考察了入口温度、转子转速和膨胀比(进出口压力比)对向心透平工况特性的影响，对主要影响因素进行极差分析。结果表明，向心透平工作转速为设计转速的80%~100%时，输出功率和等熵效率波动较小，工作转速高于设计值时透平性能迅速下降。随入口温度升高，透平输出功率与等熵效率增大；随膨胀比增大，透平输出功率线性增加。透平存在最佳膨胀比使等熵效率最大，且实际运行压比大于最佳膨胀比时，透平等熵效率变化较小。出口压力对向心透平输出功率影响最大，温度的影响最小；转子转速对等熵效率影响最大，入口压力的影响最小。

引用本文

王志奇曾凡云张振康夏小霞贺妮胡艳华张建平. 有机工质向心透平变工况特性的数值模拟与极差分析[J]. 过程工程学报, 2019, 19(2): 246-253.
Zhenkang ZHANG Fanyun ZENG Zhiqi WANG Xiaoxia XIA Ni HE Yanhua HU Jianping ZHANG. Numerical simulation and range analysis of off-design performance for a radial-inflow turbine[J]. Chin. J. Process Eng., 2019, 19(2): 246-253.

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