6.1 Power Generation Outputs

The Power Generation Output and Auxiliary Load results from the modelled cases are shown in the table below:

Table 6.1 - Modelling Cases Power Generation Outputs and Auxiliary Loads

SYSTEM CONFIGURATION Base Case 1 Case 2 Case 3 Case 4 Case 5
Base Plant X X X X X X
PCC Plant   X X X X X
Coal Drying     X X   X
Plant Optimization       X X X
Air Cooled (PCC Plant Only)           X
POWER GENERATION SUMMARY kW kW kW kW kW kW
Main Steam Turbine Generation 568,960 530,810 527,700 528,840 549,390 528,840
Expander Generation       5,320 3,130 5,320
Total Gross Power Generation 568,960 530,810 527,700 534,160 552,520 534,160
Net Power Generation 521,380 446,460 445,840 452,380 468,270 452,480
Net Power Output Reduction - 74,920 75,540 69,000 53,110 68,900
Gross Plant Efficiency, % 31.46% 29.35% 30.74% 31.12% 30.53% 31.12%
Net Plant Efficiency, % 28.82% 24.68% 25.97% 26.36% 25.88% 26.36%
AUXILIARY LOAD POWER SUMMARY kW kW kW kW kW kW
Base Plant Auxiliary Load 47,580 47,450 44,350 44,270 47,350 44,170
PCC Plant Auxiliary Load - 36,900 34,500 34,500 * 36,900 * 34,500
Coal Drying Plant Auxiliary Load - - 3,010 3,010 - 3,010
Total Plant Auxiliary Load Power 47,580 84,350 81,860 81,780 * 84,250 * 81,680
CO2 CAPTURE SUMMARY Base Case 1 Case 2 Case 3 Case 4 Case 5
CO2 Captured, (tpd) - 5,000 5,000 5,000 5,000 5,000
CO2 Produced, (tpd) 14,831 14,831 14,081 14,081 14,854 14,081
CO2 Emitted, (tpd) 14,831 9,831 9,081 9,081 9,854 9,081
Gross Specific Emission, (kg/kWh) 1.086 0.772 0.717 0.708 0.743 0.708
Net Specific Emission, (kg/kWh) 1.185 0.917 0.849 0.836 0.877 0.836
Electricity Output Penalty, (kWh/t CO2 ) - 419.89 274.70 233.60 284.36 233.60

Note: (*) The actual PCC Plant Auxiliary Load and hence the Total Plant Auxiliary Load for Case 4 and Case 5 will be either equal or less than the figures shown in table above. For the purpose of this study, a detailed assessment of the PCC auxiliary load has not been carried out.

Source: WorleyParsons

Figure 6.1 - Power Generation Outputs & Aux Loads

Source: WorleyParsons

Figure 6.2 -Generation Specific Emissions

Source: WorleyParsons