摘要
涡轮是超临界二氧化碳(S-CO_(2))布雷顿循环的关键热力设备,其性能直接影响热力系统的循环效率。S-CO_(2)具有黏度小、密度大等特性,相较于以空气或燃气为工质的涡轮,S-CO_(2)涡轮表现出结构紧凑、热效率高等优点,具有较好的工程应用前景。本文综述了国内外关于S-CO_(2)涡轮的研究进展,重点分析了由于S-CO_(2)特殊物性引起的气动设计方法和涡轮流动特性的变化。同时,总结了主要研究机构及其实验结果,指出现有S-CO_(2)涡轮实验研究中存在的风阻损失过大、密封效果差、相关运行部件适用性不足的问题。基于当前的研究进展,本文展望了未来的研究方向,包括损失模型开发、气动设计优化、流动机理探究以及非设计工况运行策略等,旨在为S-CO_(2)涡轮的深入研究提供参考。
The turbine is a critical thermal equipment in the supercritical carbon dioxide(S-CO_(2))Brayton cycle,and its performance directly affects the cycle efficiency of the thermal system.S-CO_(2) has characteristics such as low viscosity and high density.Compared to turbines that use air or gas as the working fluid,S-CO_(2) turbines exhibit advantages such as a compact structure and high thermal efficiency,showing promising engineering application prospects.This paper reviews the research progress on S-CO_(2) turbines both domestically and internationally,with a focus on the changes in aerodynamic design methods and turbine flow characteristics due to the special properties of S-CO_(2).Additionally,it summarizes the main research institutions and their experimental results,highlighting issues in current S-CO_(2) turbine experimental research,such as excessive wind resistance loss,poor sealing performance,and insufficient applicability of related operating components.Based on the current research progress,this paper forecasts future research directions,including the development of loss models,optimization of aerodynamic design,exploration of flow mechanisms,and operation strategies under non-design conditions,aiming to provide a reference for in-depth research on S-CO_(2) turbines.
作者
陈鹏
张可心
张华良
程柳
杨禹棣
CHEN Peng;ZHANG Kexin;ZHANG Hualiang;CHENG Liu;YING Yudi(School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China;Energy Storage Research and Development Center,Nanjing Institute of Future Energy System,Nanjing 211135,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100191,China;University of Chinese Academy of Sciences,Nanjing 211135,China)
出处
《工程热物理学报》
北大核心
2025年第11期3558-3571,共14页
Journal of Engineering Thermophysics
基金
新型压气储能技术研究及实验验证项目(No.KCW-31)。
关键词
超临界二氧化碳
涡轮
流动机理
实验研究
supercritical carbon dioxide
turbine
flow mechanism
experimental research
