19
Lifetime of a steam cylinder at 100% steam output
10
20
30
1000
500
1500
2000
t (h)
°
d Härte
Fig. 33
1°DH = 1,25°
English hardness
1°DH = 1,79°
French hardness
1°DH = 1,05°
American hardness
1°DH = 17,9
mg/I CaCo
3
(ppm)
Hours
with SC-System
without* SC-System
º
DH (German hardness)
* but cylinder is flushed periodically