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2024 , Vol. 33 >Issue 4: 1325 - 1339

DOI: https://doi.org/10.1007/s11630-024-1966-4

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Comparative Analysis of Diagonal and Centrifugal Compressors with Synergy Theory in Compressed Air Energy Storage System

  • ZHANG Yuxin ,
  • ZUO Zhitao ,
  • ZHOU Xin ,
  • GUO Wenbin ,
  • CHEN Haisheng
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  • 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie, Bijie 551700, China
    4. Nanjing Institute of Future Energy System, IET, CAS, Nanjing 211135, China

网络出版日期: 2024-07-15

基金资助

This study is supported by the Major Science and Technology Projects of Inner Mongolia (Grant No. 2021ZD0030), the National Natural Science Foundation of China (Grant No. 52106278), the National Science Fund for Distinguished Young Scholars (Grant No. 51925604), and the Science and Technology Foundation of Guizhou Province (No. [2019]1422).

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Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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Comparative Analysis of Diagonal and Centrifugal Compressors with Synergy Theory in Compressed Air Energy Storage System

  • ZHANG Yuxin ,
  • ZUO Zhitao ,
  • ZHOU Xin ,
  • GUO Wenbin ,
  • CHEN Haisheng
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  • 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. National Energy Large Scale Physical Energy Storage Technologies R&D Center of Bijie, Bijie 551700, China
    4. Nanjing Institute of Future Energy System, IET, CAS, Nanjing 211135, China

Online published: 2024-07-15

Supported by

This study is supported by the Major Science and Technology Projects of Inner Mongolia (Grant No. 2021ZD0030), the National Natural Science Foundation of China (Grant No. 52106278), the National Science Fund for Distinguished Young Scholars (Grant No. 51925604), and the Science and Technology Foundation of Guizhou Province (No. [2019]1422).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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摘要

储能是高效能源系统的重要一环，压缩空气储能技术是最具发展潜力的大规模物理储能技术之一，因其成本低、寿命长、低碳环保等特点备受关注。压缩机是压缩空气储能系统的核心部件，其性能对整个系统的性能至关重要，这不仅体现在设计点上，更体现在整个变工况区间上的高效运行。与传统的离心压缩机相比，斜流压缩机具有更强的通流能力；与轴流压缩机相比其具备更大的单级压比，可试用于大规模压缩空气储能系统。本文应用协同理论采用数值模拟技术对压缩空气储能系统斜流与离心压缩机性能进行对比分析，得出内部流动特性与质量流量以及进口总温的定量关系。发现当协同角余弦值较高时，局部损失较大，小的协同正面积占比是优化设计的方向。结果表明斜流压缩机对于发展中的大规模压缩空气储能系统具有良好的适应性。

关键词： compressed air energy storage; synergy theory; diagonal compressor; centrifugal compressor; comparative analysis

本文引用格式

ZHANG Yuxin , ZUO Zhitao , ZHOU Xin , GUO Wenbin , CHEN Haisheng . Comparative Analysis of Diagonal and Centrifugal Compressors with Synergy Theory in Compressed Air Energy Storage System[J]. 热科学学报, 2024 , 33(4) : 1325 -1339 . DOI: 10.1007/s11630-024-1966-4

Abstract

Energy storage technology is an essential part of the efficient energy system. Compressed air energy storage (CAES) is considered to be one of the most promising large-scale physical energy storage technologies. It is favored because of its low-cost, long-life, environmentally friendly and low-carbon characteristics. The compressor is the core component of CAES, and the performance is critical to the overall system efficiency. That importance is not only reflected in the design point, but also in the continuous efficient operation under variable working conditions. The diagonal compressor is currently the focus of the developing large-scale CAES because of its stronger flow capacity compared with traditional centrifugal compressors. And the diagonal compressor has the higher single stage pressure ratio compared with axial compressors. In this paper, the full three dimensional numerical simulation technologies with synergy theory are used to compare and analyze the internal flow characteristics. The performance of the centrifugal and diagonal impellers that are optimized under the same requirements for large-scale CAES has been analyzed. The relationship between the internal flow characteristics and performance of the centrifugal and diagonal impellers with the change of mass flow rates and total inlet temperature is given qualitatively and quantitatively. Where the cosine value of the synergy angle is high, the local flow loss is large. The smaller proportion of the positive area is the pursuit of design. Through comparative analysis, it is concluded that the internal flow and performance changes of centrifugal and diagonal impellers are different. The results confirm the superiority and feasibility of the off-design performance of the diagonal compressor applied to the developing large-scale CAES.

Key words： compressed air energy storage; synergy theory; diagonal compressor; centrifugal compressor; comparative analysis

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