💧 VVER Steam Generator Feedwater Systems
VVER feedwater systems supply water to the horizontal steam generators, ensuring stable secondary-side conditions and efficient heat transfer. Their design reflects the unique geometry and flow characteristics of VVER steam generators.
Feedwater System Components
- Feedwater Pumps: Provide high-pressure flow to the steam generators.
- Feedwater Heaters: Improve thermal efficiency through staged heating.
- Distribution Headers: Deliver feedwater evenly across the SG tube bundle.
- Control Valves: Regulate flow based on steam demand and SG level.
Operational Characteristics
- Horizontal SG Dynamics: Feedwater enters at one end and flows across the tube bundle.
- Level Control: Maintains stable boiling and steam separation.
- Thermal Efficiency: Optimized through multi-stage feedwater heating.
- Natural Circulation Support: Stable feedwater flow enhances passive cooling.
Why It Matters
- Defines steam generator performance and stability.
- Supports efficient secondary-side heat transfer.
- Integrates with VVER passive safety systems.