Performance and Cost

Table 2 summarizes the performance and cost indicators for the high pressure, direct gasification combined cycl e system being characterized in this report.

Table 2. Performance and cost indicators.

Base Case

INDICATOR

1997

2000

2005

2010

2020

2030

NAME

UNITS

+/- %

+/- %

+/- %

+/- %

+/- %

+/- %

Plant Size

MWe

75

75|

100|

100

110|

110

General Performance Indicators

Capacity Factor

%

80

80

80

80

80

80

Efficiency

%

36.0

36.0

37.0

37.0

41.5

45.0

Net Heat Rate

kJ/kWh

10,000

10,000

9,730

9,730

8,670

8,000

Annual Energy Delivery

GWh/yr

526

526

701

701

771

771

Capital Cost

$/kW

15

20

20

20

30

30

Fuel Preparation

113

113

101

101

94

86

Gasifier

519

450

377

346

319

293

Gas Turbine

216

216

216

198

176

160

Steam Turbine

48

48

48

44

0

0

Balance of Plant

311

248

197

147

118

85

Control System

9

9

9

8

8

7

Hot Gas Cleanup

43

39

34

31

31

28

Installation

208

191

157

132

112

99

Turbine Building

6

6

6

6

6

5

Waste Pond etc.

2

2

2

2

2

1

General Plant Facilities

147

132

115

102

87

77

Engineering Fee

162

145

126

112

95

84

Proj./Process Contingency

243

218

189

168

143

126

Startup Costs

56

56

56

51

51

46

Inventory Capital

10

10

10

9

9

8

Land @ $16,060/ha

9

9

7

7

7

6

Total Capital Requirement

2,102

15

1,892

20

1,650

20

1,464

20

1,258

30

1,111

1. The columns for "+/- %" refer to the uncertainty associated with a given estimate.

2. Plant construction is assumed to require two years.

3. Totals may be slightly off due to rounding .

Notes:

1. The columns for "+/- %" refer to the uncertainty associated with a given estimate.

2. Plant construction is assumed to require two years.

3. Totals may be slightly off due to rounding .

Table 2. Performance and cost indicators. (cont.)

INDICATOR NAME

UNITS

Base Case 1997

2000

2005

2010

2020

2030

Plant Size

Operations and Maintenance Cost

Feed Cost

Fixed Operating Costs Operating

Supervision and Clerical

Maintenance Labor and Material Costs Total Fixed Costs

Variable Operating Costs Labor

Maintenance Labor and Material Costs Total Variable Costs

Variable Consumables Cost Chemicals Water

Ash/Solids Disposal Total Consumables Total Operating Costs

2.50 60

68.7

0.40

2.50

43.4

0.40

2.50

30.47 43.4

0.40

2.50

43.4

0.40

2.50

43.4

0.40

2.50

43.4

0.40

Notes:

1. The columns for "+/- %" refer to the uncertainty associated with a given estimate.

2. Total operating costs include feed costs, as well as fixed and vaiable operating costs.

3. Totals may be slightly off due to rounding .

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