Hallo all,
its about the Header pressure derviation. I didnt understand the derivation on the red mark (Massflux term) in the picture. If anybody can clarify would be helpfull.
https://files.engineering.com/getfile.aspx?folder=7a698ca4-6b74-4ee3-9f80-23480c877cf6&file=Header_Pressure.PNG
@ Davefitz. Agreed. If i understand the Question correctly '' Is there a type of water-tube boiler which has its steam drum or water drum exposed to heat (either radiation or convection)?''
the Answer is 'Yes' . to my Knowledge not by Radiation but by Convection - and not in the power...
@ Littleinch : Yes tubes are mostly equal spaced. For the Derivation we can assume equally spaced.but by Chance can you derive? I am also going to post this is in Boiler group.
@ Davefitz , if i remember correctly , most of the Bi-drum Boiler (Industrial Boiler)Bottom of the top drum is in the flue gas path??Further Ligament effeciance is much small in the range of 45-60%
Hallo all,
its about the Header pressure derviation. I didnt understand the derivation on the red mark (Massflux term) in the picture. If anybody can clarify would be helpfull.
Hi Kingnero :
We have the weld expert who takes responsibilities of this stuff. This weld consumables are written down in the pressure püart drawing. i would like to understand this stuf!
WB36 ; Cu = 0,50-0,80
Hallo all , anyidea where can i find the filler material (weld metal) for this dissimilar weld? May be an european norm reference would be acceptable! Many thanks!
Hi Cronin!It is for the Boiler Drum with European norm.
WB36 is equivalent to SA 306 GrB or A & P355GH equivalent is SA 516. Never used a material combination other than nozzles with different material on drum.
Regarding Welding : Being a process & presure part enginner, knowledge on welding...
Hallo all , as said due to the material availability , we have alloy steel Shell WB36 and the Ends P355GH . Have anybody done this combisnation or any thoughts what should be the checklist?
Welding: How are the Welding thoughts"
Thanks for the expert helps!