S-CO2布雷顿循环瞬态模拟.pdf

S-CO2 Brayton Loop Transient Modeling The 4th International Symposium on Supercritical CO2 Power Cycles September 9 10, 2014 Outline  Background  Model Results and Comparisons with Test Data • Steady State Heat Balance • Transient  Turbomachinery Start-up  Power Transients  Next Steps/Model Updates • NIST REFPROP/FIT • Test data  Summary 2 Background  Integrated Systems Test (IST) • Characteristics  Recuperated Closed Cycle Brayton  Rated power 100kWe  Power and Compressor Turbines in Parallel  Constant Speed Turbine Generator  Generated power Compressor Speed  Fixed inventory • Purpose  Operational experience  Demonstrate system control Validate transient model 3 Background: Integrated Systems Test 4 Background: Integrated Systems Test 5 Background: IST Transient Model  IST Transient Model •Built using TRACE and SNAP GUI •Heat Source to Heat Sink •Developed compressible fluid modeling methods •Developed control systems Hot Oil System S-CO2 Brayton Loop S-CO2 Brayton Loop Control Chilled Water System 6 Steady State Comparison: Updated Model 97.4 F