Abstract
The calculation model of the multi-parameter design optimization and variable working conditions was developed for the waste heat recovery system of the pre-heater of coal-fired unit. The multi-parameter optimization for the system was performed. The control strategy of operating parameters was proposed. Results show that the coal-saving rate of the optimized system under the design condition is 3. 67 g/ (kW • h). Although the multi-parameter optimized system can maintain a high coal-saving rate under off-design working conditions, the safety is seriously restricted by the ambient temperature and unit load. The proposed control strategy can extend the lower limit of environmental temperature for safe operation of the system from 24 "C to —3 "C at 100% rated load, which significantly improves the comprehensive effect of system optimization.
| Translated title of the contribution | Multi-parameter and Collaborative Operation Optimization of Waste Heat Recovery System of Pre-heater of Coal-fired Unit |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 148-156 |
| Number of pages | 9 |
| Journal | Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering |
| Volume | 44 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2024 |