Page 131 - Design of Solar Thermal Power Plants

118 3. GENERAL DESIGN OF A SOLAR THERMAL POWER PLANT

TABLE 3.1 Energy Balances at Design Point for the Badaling Power Tower Plant

Input Residual
S/N Item Power (kW) Loss (kW) (kW)
1 Solar DNI Input in the 10,000
heliostat field at the
design point
2 Concentration process: 10,000 3500 6500
Shading and blocking,
cosine effect, specular
reflectance, atmospheric
transmission loss,
receiver intercept factor
3 Thermal receiver 6500 1300 5200
process:
Reflection,
convection, radiation,
thermal conduction
4 Thermal storage (Not
process: used)
Thermal dissipation
loss, thermal charging
and discharging loss
5 Transmission process 5200 90 5110
6 Stream turbine 5110 4045 1065
working:
Steam
thermodynamic cycle
loss, thermal
dissipation
7 Self-dissipation loss: 1065 Steam turbine 155 910
Consumption and loss 20
of auxiliary system
(rated operational Concentration
conditions) field and
communication
20
DCS 5
Cooling tower
pump 60
Others (high
pressure feed
pump,
industrial water
pump, feed
booster pump)
50
8 Power plant net 910
output