Whit regards to superheater coil design I have two questions
1- What is the linear velocity of the steam through the tubes of a superheater coil and its relation to the linear velocity of the same steam through the in and outlet collectors.
2- What are the ratio limits wherein both velocities...
Dear specialists
A steam super heater consists of two identical collectors for in and outlet. Between both headers are a number of identical series of pipes. The inlet on the inlet collector is diagonal to the outlet on the outlet collector assuring the same distance between in and out for all...
Same boiler other problem.
After the problem with the nuisance trips due to high frequency radio signals and the vibration problem witch is still not really solved, our two pas, fire tube, 11barg, 30tons/hour, 235°C super heated HDS/Saacke steam boiler, for the a second time, has cracks in the...
Same boiler other problem.
After the problem with the nuisance trips due to high frequency radio signals and the vibration problem witch is still not really solved, our two pas, fire tube, 11barg, 30tons/hour, super heated HDS/Saacke steam boiler, for the a second time, has cracks in the welds...
With our new HDS/SAACkE 30ton/hour double fired fire tube boiler we have severe vibration problems. The vibrations are occurring at relatively low, about 1/3, load and at the change over from negative to positive combustion chamber pressure. We’ve managed to improve it by altering the combustion...
We encountered numerous nuisance trips on a new 30ton/hour Kvaerner/ HDS/Saacke fire tube package boiler. After a number of alterations on the instruments, with little effect, we finally found out some of the instruments(6), in the lockout system, where susceptible to signals of the portable...
Dear colleges
Can anyone help me to a copy of the ASTM BE22 standard. Does chlorine, brackish water corrode this material. Is the material suitable for H2SO4
koekoek
Dear specialist
I have been honoured with the commissioning task of a H2SO4 injection to a cooling tower system. It consist of a peristaltic pump taking suction on a 10000l H2SO4 drum and a, about 500m 1 ½” stainless line, ending in the cooling tower base. The transport line has low point...
Can someone advice me where I can find the norm (what norm?) for finish, flatness and waviness specifications, for mating surfaces of flanges.
Many thanks
koekoek
Can someone advice me where I can find the norm (what norm) for finish, flatness and waviness specifications, for mating surfaces of flanges.
Many thanks
koekoek
The length of standard spanners is determined to develop a tension to the bolt of according to:
ASME B31-3 S= 45000/Vd, with s = bolt tension and Vd= square root of bolt diam.
EN 1591 FBoav = AB x 1000/ VdBO, with FBoav = bolt force VdBO square root of bolt diam.
AB = effective bolt...
