Investigation on One-Dimensional Loss Models for Predicting Performance of Multistage Centrifugal Compressors in Supercritical CO Brayton Cycle

作     者：SHAO Wenyang DU Juan YANG Jinguang WANG Xiaofang LYU Guochuan SHAO Wenyang;DU Juan;YANG Jinguang;WANG Xiaofang;LYU Guochuan

作者机构：School of Energy and Power EngineeringDalian University of TechnologyDalian 116024China Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2021年第30卷第1期

页      面：133-148页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Key Research and Development Program of China(No.2016YFB0600100) National Natural Science Foundation of China(No.51506195) the Collaborative Innovation Center of Major Machine Manufacturing in Liaoning 

主　　题：supercritical carbon dioxide Brayton cycle centrifugal compressor one-dimensional performance analysis loss model three-dimensional CFD simulation 

摘      要：The main compressor in a supercritical carbon dioxide(SCO2)Brayton cycle works near the critical point where the physical properties of CO_(2)are far away from the ideal *** investigate the effectiveness of the conventional one-dimensional(1D)loss models for predicting the performance of compressors working in such nontraditional conditions,detailed comparisons of 1D predicted performance,experimental data and threedimensional CFD results are made.A 1D analysis method with enthalpy and total pressure based loss system is developed for multistage SCO2 centrifugal compressors,and it is firstly validated against the experimental results of a single stage SCO2 centrifugal compressor from the Sandia National Laboratory.A good agreement of pressure ratios with experiments can be achieved by the 1D *** the efficiency deviations reveal the potential deficiencies of the parasitic loss *** the basis of the validation,a two-stage SCO2 centrifugal compressor is employed to do the ***-dimensional CFD simulations are *** comparisons are made between the CFD and the 1D results at different stations located in the *** features of the deviations are analyzed in detail,as well as the reasons that might cause these deviations.