For pressure drop calculations, Crane's Handbook and many software give the absolute roughness of Pipes as 0.05 mm for clean commercial steel pipes
What is the surface finish (RMS or Ra) to be specified to the pipe manufacturer to attain the above absolute roughness.
Is there any correlation...
I came across a literature that FRITZCHE formula is more appropriate for Superheated steam lines than the conventional Crane or Darcy formulae for pressure loss in Piping.
Can this formula be used for sizing piping in a Power Plant like Main Steam Piping, Reheat Piping
How is the pressure loss in Main steam piping assumed while fixing the Boiler Super heater outlet pressure, to start with the initial fixing of parameters. Is it expressed as a percentage of HP Turbine inlet pressure.
I have seen in some Power Plant engineering books that 5% of Turbine inlet...
For one of our projects for an EQUAL TEE OF SA234WP91 material, with 20" OD and thickness of 4 ", Vendor has proposed a block forged and machined tee instead of formed one
1. Above what thickness can we accept Forged tees instead of Formed, and are there any disadvantages associated with it ...
EN 13480-3 piping code that Cylindrical Y-Pieces (Seamless) are not recommended in High temperature creep lines
One of the reason could be that forged and machined Y-Pieces have very high thickness in the crotch area (almost three to four times) compared to spherical welded Wye pieces. This can...
