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List of Figures Figure 1. Cycle Efficiency Comparison of Advanced Power Cycles..................................6 Figure 2. Reference S-CO2 Brayton Cycle Conditions and Calculated Performance. ......10 Figure 3. CO2 Specific Heat Variation in Recuperators. ...................................................15 Figure 4. Double-Recompression S-CO2 Cycle Layout and Calculated Performance......17 Figure 5. Optimization of Maximum CO2 Pressure...........................................................19 Figure 6. CO2 Conditions near the Critical Point. .............................................................20 Figure 7. CO2 Cycle Efficiency versus Minimum Temperature and Cooler Volume Tradeoff. ............................................................................................................21 Figure 8. Effect of the Cycle Efficiency versus Minimum Temperature (pmin=7.4 MPa). .................................................................................................................22 Figure 9. CO2 Properties Variation near the Pseudocritical Points. ..................................24 Figure 10. S-CO2 Brayton Cycle Efficiency Dependency on Minimum Pressure with Supercritical Temperature (Tmin=31.25 oC).......................................................25 Figure 11. Trade-off between the Cycle Efficiency and Cooler Volume with Minimum Cycle Pressure (Optimum Flow Split Points, Tmin=31.25 oC)..........26 Figure 12. S-CO2 Brayton Cycle Efficiency Dependency on Minimum Pressure with Supercritical Temperature (Tmin=31.50 oC).......................................................27 Figure 13. Tradeoff Between the Cycle Efficiency and Cooler Volume with Minimum Cycle Pressure (Optimum Flow Split Points, Tmin=31.50 oC). .........................28 Figure 14. CO2 Cycle Efficiency versus Minimum Pressure for Subcritical Minimum Temperature (Tmin=20 oC). ................................................................................29 Figure 15. Optimization of Maximum Pressure for Condensation Cycle (Tmin=20 oC, pmin=5.75 MPa)..................................................................................................30 Figure 16. CO2 Condensation Cycle Performance and Conditions. ..................................31 Figure 17. Configuration and Performance of the S-CO2 Cycle with a Intercooling. .......33 Figure 18. Configuration and Performance of the S-CO2 Cycle with Reheating. ............35 Figure 19. Heat Exchanger Optimization for the ABTR. ..................................................37 Figure 20. Turbine Optimization for the ABTR. ...............................................................38 Figure 21. S-CO2 Cycle Performance with "Ideal" Heat Exchangers. ..............................39 Figure 22. S-CO2 Cycle Performance with "Ideal" Heat Exchangers and a 12-stage Turbine. .............................................................................................................40 Figure 23. Performance of CO2 Condensation Cycle with Large Components.................41 3PDF Image | Performance Improvement Options for the Supercritical Carbon Dioxide Brayton Cycle
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