I think that the maximum temperature under Sec I or Sec VIII is 1200 F, not 900 F. 900 F is where the creep (time-dependent properties) starts and some considerations shall be taken regarding elastic-plastic analysis for peaking in welds, tubes and tubesheets. You can design for this temperature...
Bogui1900,
The value are gave are typical ones, but, of course, they have to be checked considering your application.
Usually these chechs are done by the condenser supplier. I suggest you contact them.
If you want, I cand make some more precise numbers, but I would need some additional data...
Conside the maximum forces and moments as follows:
NPS 4
-For in plane forces and momments: F=1334 Lb, M=6667 Lb-ft
-For out of plane force and moment: F=500 Lb, M=2367 Lb-ft
NPS 6
-For in plane forces and moments: F=2000 Lb, M=10000 Lb-ft
-For out of plane force and moment: F=700 Lb, M=3500...
Hi, guys.
Does anybody have experience with S-Ten 1 from Nippon Steel applied to air heaters, ID fans or ducts working below acid dew point?
Thanks in advance,
Darshiva
Athomas236,
If there is no OFA or external FGR, most probably, oil low NOX burners are based on air staging. Typically burner will be of Venturi style or double register style. It will have a central priamry/secondary air stream going through an axial swirler and a tertiary air stream...
Athomas236,
I don't think low NOx burners is the issue. Flame could be a little bit longer, but not enough to change FEGT enough to affect heat transfer in the superheater. Low NOX burners lower the peak flame temperature, but not the average flame temperature. Is thera an OFA installed? FGR...
