According to the design specifications, the normal steam and water loss of the 600 MW unit is 1.5% of the BMCR boiler flow rate. Additionally, subcritical units must be evacuated. be 0.5% and the heating units must also be discharged. Also consider margin. Here are some examples:
For a conventional single subcritical unit of 600 MW, the evaporation capacity of the BMCR is calculated as: 2000 T/h, then 2000*(1.5%+ 0.5%) = 40 T/h. Consider a certain margin in the design, then the water replenishment volume of the four units will be approximately 200 T/h. If it is a unit with heating function, the water replenishment volume will be larger and it can reach 500 T/h. grade.
For more details, please refer to the technical specifications related to thermal power plants: DL-T?5000-2000?Technical regulations for the design of thermal power plants.pdf
ou DL-T?5068-2006? Technical regulations for the chemical design of thermal power plants.pdf
The river water flow rate of a small hydroelectric power plant is 100 m^3/s, and the level difference d The water between upstream and downstream is 80m. (Take g=10N/kg) Find:
(1) The work done by the gravity of water per hour;
The gravity of water in one hour G =pgv=1000 *10*100 *3600=3.6*10^9N
Work W=Gh=3.6*10^9*80=2.88*10^11J
(2) If the power The production efficiency of this hydroelectric plant is 80%, how many kWh are generated per hour?
Electricity production: 2.88*10^11*80%/(1000*3600)=6.4*10^4kwh