Abstract
The component performance of the SCO2 cycle changes significantly as the system load decreases. Therefore, a SCO2 recompression cycle of 10 MW output power is first established in this paper. Then the off-design performance of the system is studied under inventory control and turbine bypass control respectively. The results show that when the system load is reduced to 10%, the thermal efficiency of inventory control decreases to 21.04%, and the re-compressor tends to stall. The thermal efficiency of the turbine by-pass control was 13.56%, and the two compressors are blockage. Based on this, the strategy of inventory-bypass hybrid control is proposed. The use of the hybrid strategy improves the running state of the compressor under the two single strategies, and the system performance is between the two single strategies.
| Translated title of the contribution | Study on Off-Design Performance and Control Strategies for SCO2 Recompression Cycle |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 3213-3219 |
| Number of pages | 7 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 44 |
| Issue number | 12 |
| Publication status | Published - Dec 2023 |