The evaporation of power station boiler directly affects the load of steam turbine generator set.

Typically, a medium-temperature and medium-voltage unit like this uses 4-5 tons of steam per 1MW of power.The smaller the unit, the larger the unit, the smaller the unit gas consumption.

In general, 75T boiler, with 15MW unit is no problem, and most are so.

If it is a pure condensing unit, it can be calculated in accordance with 4kg/ kW, such as boiler evaporation of 75 tons per hour, then the power of the turbine generator set is about 15000kW.The smaller the unit, the higher the steam consumption rate, the larger the unit, the lower the steam consumption rate.

Boiler output is determined according to the amount of steam needed to see whether direct steam for heating or process, or steam for power generation.For power generation, the boiler should be equipped according to the capacity of the turbine generator.

Examples of boiler calculation:

Type of boiler: coal-fired boiler

Steam (drying) amount: 10 Tph

Steam pressure (gauge)/ temperature: 10 kg/cm2(g)/ 180 0C

Coal consumption: 2.25 Tph

Feed water temperature: 85 0C

Total calorific value (GCV) of coal: 3200 kcal/kg

Enthalpy of 10 kg/cm2 pressure vapor: 665 kcal/kg (saturation)

Enthalpy of feed water: 85 kcal/kg

According to the steam at a certain amount of evaporation, temperature, pressure, according to the enthalpy value of steam to calculate the total energy, and then according to the efficiency of the power plant is generally about 35% conversion, roughly can calculate the power generation.But domestic turbo-generators are configured according to a certain capacity quota, so there are only integers such as: 15MW, 50MW,135MW,300MW and so on