Design and condensation performance analysis on the first stage of main compressor in MW-level supercritical carbon dioxide power generation system

XU Jun; CHAO Xujia; FAN Shiwang; WANG Tong

doi:10.19666/j.rlfd.202004099

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Design and condensation performance analysis on the first stage of main compressor in MW-level supercritical carbon dioxide power generation system

更新时间：2025-09-28

- Design and condensation performance analysis on the first stage of main compressor in MW-level supercritical carbon dioxide power generation system
- Thermal Power Generation Vol. 49, Issue 10, Pages: 180-188(2020)
- 作者机构：
  
  1. 上海交通大学机械与动力工程学院
  2. 上海汽轮机厂有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202004099
  CLC： TK474.8
- Published Online：15 September 2020，
  
  Published：2020
- 稿件说明：
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XU Jun, CHAO Xujia, FAN Shiwang, et al. Design and condensation performance analysis on the first stage of main compressor in MW-level supercritical carbon dioxide power generation system[J]. Thermal power generation, 2020, 49(10): 180-188.
DOI：

XU Jun, CHAO Xujia, FAN Shiwang, et al. Design and condensation performance analysis on the first stage of main compressor in MW-level supercritical carbon dioxide power generation system[J]. Thermal power generation, 2020, 49(10): 180-188. DOI： 10.19666/j.rlfd.202004099.

摘要

为实现MW级超临界二氧化碳布雷顿循环发电系统的开发

由气体动力学参数分析得到主压缩机的适宜进口参数范围。结合超临界二氧化碳强烈非线性的实际物性

引入叶轮内损失模型

改进热力设计得到主压缩机第1级叶轮模型。采用数值模拟方法

分析所设计叶轮的流场

对比不同进口参数下

叶轮进口流动凝结对压缩机性能的影响。结果发现:对于不同进口总温和总压

温度对气流凝结的影响更大。为得到较接近临界参数的工作点

可在本文工作基础上对叶轮进行优化设计。

Abstract

In order to realize the development of MW-level supercritical carbon dioxide(S-CO_2) Brayton cycle power generation system

the suitable inlet state parameters range for the main compressor is obtained by analyzing the gas dynamic parameters. Combined with the actual nonlinear physical properties of supercritical carbon dioxide

the loss models in the impeller were introduced

and the thermodynamic design was improved to obtain the impeller model of the first stage in the main compressor. By using the numerical simulation method

the flow field of the designed impeller was analyzed

and the influence of the inlet flow condensation in the impeller on the performance with different inlet parameters was compared. It was found that the temperature had a greater effect on condensation at different inlet total temperatures and total pressures. In order to get the working point closer to the critical parameter

the impeller can be optimized and designed based on the work in this paper.

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