Is there an inevitable connection between the water evaporation rate in power station boilers and the load of the generator set?
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As the title suggests, in the materials I’ve seen, a unit with a capacity of 360MW corresponds to an evaporation rate of 1160 t/h； 200MW corresponds to an evaporation rate of 670 t/h. I’m not sure if there’s a one-to-one relationship between them; those who know of specific units along with their evaporation rates can share that information so we can discuss it together.
There is a general correspondence, but it’s not absolute! This is because it depends on the type of turbine involved, such as whether it is a condensing turbine, a extraction-type turbine, or a back-pressure turbine, etc. However, in most power plants, condensing turbines are used, so there is generally a corresponding relationship.
I think: there is a roughly linear relationship between the two
For a given size of power unit, the parameters of the steam turbine used are fixed; accordingly, the steam output of the boiler is also determined accordingly.
For power plants, condensing steam turbines are generally used, so this applies to the case of pure condensation operation. If steam extraction is involved, there are slight differences under different rated operating conditions.
There is a general correspondence, but it’s not absolute!
One ton of steam is equivalent to a load of 300 kilowatts.