T₆ (K)

/%

/%

Initial investment

/$

design value

394.5

13.24

0

29.10

917,880

0

Scheme one

401.7

13.48

1.81%

30.41

935,640

1.93%

Scheme two

401.5

13.42

1.36%

30.40

941,440

2.57%

Scheme three

403.4

13.57

2.49%

30.77

924,700

0.74%

Scheme four

404.3

13.68

3.32%

30.85

930,910

1.42%