Minghui ZHANG, Junli GOU, Zheng WANG, Jianqiang SHAN. Operation characteristics of a megawatt nuclear power system with high efficiency and compactness[J]. NUCLEAR TECHNIQUES, 2024, 47(2): 020601
- NUCLEAR TECHNIQUES
- Vol. 47, Issue 2, 020601 (2024)
Fig. 1. Schematic of a new nuclear power system
Fig. 2. Core of the new type of heat pipe reactor
Fig. 3. Calculation flowchart of coupling code
Fig. 4. System node diagram
Fig. 5. Response to +0.001 reactivity introduction (a) Power and speed response, (b) Temperature response, (c) Reactivity response, (d) Pressure and flowrate response
Fig. 6. Calculation results of load disturbance (a) Power response under -5% load disturbance, (b) Power response under +5% load disturbance, (c) Flowrate response, (d) Temperature response under -5% load disturbance, (e) Temperature response under +5% load disturbance
Fig. 7. Response to cooling water temperature disturbance (a) Temperature disturbance, (b) Temperature response 2, (c) Reactor core power response and reactivity response, (d) Flowrate response, (e) Pressure response
Fig. 8. Response to cooling water flow disturbance (a) Compressor inlet temperature response, (b) Speed response, (c) Flowrate response, (d) Turbine inlet temperature response, (e) Reactor core temperature response, (f) Reactor core power response, (g) Compressor outlet temperature response
Fig. 9. Schematic diagram of control system
Fig. 10. Flow chart of compressor inlet temperature control
Fig. 11. Flow chart of rotary speed and load control
Fig. 12. Performance curve of compressor
Fig. 13. Comparison of compressor flow control (a) Uncontrolled compressor flowrate, 70% load, (b) Controlled compressor flowrate, 0% load
Fig. 14. Flow chart of compressor flow control
Fig. 15. Flow chart of turbine inlet temperature and core power control
Fig. 16. Results of linear load variation (a) Load and power variations, (b) Flowrate variation, (c) Pressure variation, (d) Temperature and rotary speed variations
Fig. 17. Results of stepped load variation (a) Load and power variations, (b) Flowrate variation, (c) Pressure variation, (d) Temperature and rotary speed variations
Fig. 18. Calculation results of load rejection at different degrees (a) Reactor core power variation, (b) Reactor core temperature variation, (c) Turbine inlet temperature variation, (d) Turbine inlet pressure variation
Fig. 19. Calculation results of 70% load rejection (a) Flowrate variation, (b) Temperature variation, (c) Heat transfer coefficient and rotary speed variations, (d) Reactivity variation, (e) Power variation, (f) Pressure variation
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Table 1. Comparison of steady-state value and design values
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