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
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.
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!
Hello all, I am just looking for an approximate welding cost.
DN250 x 16mm - DN250 x 16mm - 16Mo3
DN250 x 16mm - DN25 X 5mm - 16Mo3
Approximate cost of normal butt weld?
Hello all, I have seen an weld between TP 347 with T11. Just looking for some calcualtion to support this weld is Good. May be selection of electrode will also be helpfull. I want to understand this because previously i understood wrongly. Experts help will be appreciable.
Just need a guidance , Flow nozzle location for Feed water pipe and Main steam pipe. It is a argument between Vertical or horizontal. i am just looking for any supporting writeup to support the argument. for eg something given on this book Power plant control and instrumentation, unfortunately...
As subject, most of us knows , conventional springloaded safety valve has checknut in the bonnet which will keep the spring during operation , when it reaches the set pressure , spring will be compressed against the checknut by steam and releive it.
In the Pneumatic, air pressure will act on the...
As subject, most of us knows , conventional springloaded safety valve has checknut in the bonnet which will keep the spring during operation , when it reaches the set pressure , spring will be compressed against the checknut by steam and releive it.
In the Pneumatic, air pressure will act on...
as per ASMe B31.1 ; cl:122.4 on attemperator block valave ''regulating valve shall be installed upstream of the stop valve. In additon, if the steam generator supplies steam to the steam turbine, a power operated block valves shall be installed upstream of the regulating valve."" - this is self...
Hi all , We have the boiler desuperheater control by Multiple nozzle desuperheater valve. I got a offer from two reupted supplier. Below are some details on design case.
Spray flow : 3,11tph
Spec density : 0,95
Cv @ 80% opening : 6,78
Dp offered : 0,3 bar
On the above i calcualted the DP , it...
Hi all , We have the boiler desuperheater control by Multiple nozzle desuperheater valve. I got a offer from two reupted supplier. Below are some details on design case.
Spray flow : 3,11tph
Spec density : 0,95
Cv @ 80% opening : 6,78
Dp offered : 0,3 bar
On the above i calcualted the DP , it...
As per ASME B31.1 clause 122,4 (A.1) "If the steam generator supplies steam to a steam turbine, a power-operated block valve shall be installed upstream of the regulating valve" - It is self explanatory. Is there any equivalent or similar writing in EN code or PED?
PS : I will be posting this...
Hi all,
EN13480 doesnt specify on the magnitube of thickness allowance but PAS1057 says 1mm for Ferritic pipe irrespective of Technical delivery condition. Query is if i sent the calcualtion to Statutory body, do they ask for 1mm allowance...
Dear All, This is for the Boiler final Superheater. FSH tube material is TP347H (please dont ask why as customer forced me use this as this is EFW Boiler). Header material is P22. I suggested Intermediate material of T91 otherwise i say they have welding issues due to different expansion and...
Dear All, This is for the Boiler final Superheater. FSH tube material is TP304H (please dont ask why as customer forced me use this as this is EFW Boiler). Header material is P22. I suggested Intermediate material of T91 otherwise i say they have welding issues. But customer wants to weld...
All, I have a feed pump offer with VFD Installation which is with 50Hz and 2 poles , synchroneous Speed is 3000rpm. Querries are
1. To what minimum frequency or rpm i can go down ?
2. How can i calcualte the Minimum rpm or frequnecy (Hz)? because if i have any load lower than this rpm , i need...
