Parameter

Value

Economizer tube thickness (mm)

0.5

Economizer tube material

steel

Heater wall thickness (mm)

1.0

Heater material

copper

i

0.43

n (year)

4

y (s year−1)

1.58 × 107

Energy price (USD∙J−1)

1.4 × 10−8

Steel tube price 1/4" (USD∙m−2)

460

Copper tube price (USD∙m−2)

160

Shell (USD∙m−2)

60

Troom (˚C)

25