items

Units

Plant 1

Plant 2

Plant 3*

Plant 4*

Plant 5

Plant 6*

Plant 7

Plant 8

Installation cost of generator (10% of generator cost)

$

700

700

700

700

700

700

700

700

The sum of capital cost

$

73,246

63,246

73,246

69,746

71,246

64,846

61,146

76,246

System life time

Years

16

16

16

16

16

16

16

16

Capital cost calculation

A1 according to 0% interest rate

$/year

4577.9

3952.9

4577.9

4359.1

4452.9

4052.9

3821.6

4765.4

A1 according to 3% interest rate

$/year

5831.2

5035.0

5831.2

5552.5

5671.9

5162.4

4867.9

6070.0

A1 according to 5% interest rate

$/year

6758.4

5835.7

6758.4

6435.4

6573.8

5983.3

5641.9

7035.2

Operation & maintenance cost:

Fuel cost per litre

$/litre

0.6466

0.6466

0.6466

0.6466

0.6466

0.6466

0.6466

0.6466

Plant Capacity

m³/day

2960

2556

2960

2818

2879

2620

2471

3081

Chemical cost per m³

$/m³

0.025

0.025

0.025

0.025

0.025

0.025

0.025

0.025

A2—Fuel cost

$/year

21,239

16,519

21,239

46,726

16,991

33,039

36,343

46,726

A3—Membrane replacement cost

$/year

13,600

13,600

10,200

24,480

7,650

6,800

10,200

24,480

A4—Chemical cost

$/year

1847

2770

3232

7314

2438

2770

3657

6501

Sum of other O & M cost

$/year

Case 0%

320.45

276.70

320.45

305.14

311.70

283.70

267.51

333.58

Case 3%

408.18

352.45

408.18

388.68

397.04

361.37

340.75

424.90

Case 5%

473.09

408.50

473.09

450.48

460.17

418.83

394.93

492.46

Cost per m³ of product water for i = 0%

$/m³

1.42

1.69

1.81

1.15

1.36

2.14

2.25

1.29

Cost per m³ of product water for i = 3%

$/m³

1.47

1.75

1.87

1.17

1.42

2.20

2.30

1.31

Cost per m³ of product water for i = 5%

$/m³

1.50

1.79

1.91

1.18

1.46

2.24

2.33

1.33

Levelised cost per m³ of product water for i = 5%

$/m³

2.06

2.45

2.61

1.66

1.97

3.09

3.25

1.86