【2026 Condition Analysis】Why, during the startup of a turbine, must the condenser water level be kept high at low loads, while it needs to be lowered to a lower level once a certain load is reached?

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This post was last edited by The one on 2026-5-5 06:26 because there are some drain pipes connected to the hot well of the condenser. When the unit starts up, the exhaust volume is low; by using the control valve at the outlet of the condensate pump and the condensate recirculation valve, a high water level on the condenser side can be maintained. This ensures that the drain pipe openings remain submerged under the water surface. When the drain water enters the hot well, it does not flow directly into the condenser and cause impact vibrations, thereby reducing damage to the copper tubes. Once the unit reaches a certain load and the exhaust volume is high, the condensate recirculation valve is closed, and the outlet control valve of the condensate pump is opened slightly. By utilizing the cavitation principle of the condensate pump, it is possible to maintain a low water level in the condenser automatically, which reduces the need for manual adjustments and lowers power consumption.