The issue of boiler water consumption
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For a power plant with 2 CFB boilers of 220 t/h each, along with 2 25MW generators, how much circulating water is generally required? Is 300t/h possible?
With both units running at full capacity, the water consumption is 440 t/h.
Is the questioner asking about the volume of water in the cooling cycle?
The data is incomplete; is it a extraction-condensation unit? I don’t know what the condensate volume is? In any case, if the question is about the circulating water volume, it’s definitely more than 300 t/h – in fact, it’s over 10 times that amount.
If both units are fully condensing type, the circulating water volume must be at least 10,000 m3/h
One 25MW backpressure steam turbine with a rated steam inlet flow of 103 t/h; one 25MW extraction steam turbine with a rated steam inlet flow of 333 t/h, an extraction pressure of 4.0 MPa, and an extraction flow of 265 t/h
Both should be extraction steam units; steam is not primarily used for power generation. The calculation method for the circulating water volume is likely different from that of power generation boilers
With 2 CFB boilers of 220 t/h each, along with 2 25MW generators, such a power station typically consumes around 3,000 to 5,000 t/h of circulating water
Is the generator of extraction-type or back-pressure type? If it is back-pressure type, the water consumption of the boiler should be 440 tons per hour； In the case of extraction condensation, the water consumption per hour by the boiler should be less than 440 tons; exactly how much less depends on the power generation load and the amount of steam extracted. It is possible to view the operating curve of the steam turbine.