When I size two phase PSV, I need to run HYSYS for an isenthalpic (adiabatic) flash calculation at 90% of relief pressure to calculate the vapour specific volume.
Could someone guide me how to set up this HYSYS model. The service is condensate, tow phase will be water and steam.
Thanks in advance.
Not this reason. They maybe consider some cryogenic problem when transferring a "big" flow rate of nitrogen. But I do not see any of this kind problem here.
Our client needs a 3" nitrogen transferring piping system with 70,000 scfh flow rate under 100 psig pressure. The client engineer indicated they would like to use stainless steel piping. I just wonder what is the reason behind that? Thanks advance.
Hi, everyone,
Dose anyone can provide the rule of thumb or resources for:
1. arrangement and layout of high temperature/high pressure piping systems and supports.
2. piping support component selection.
Many thanks ahead.
Hello, everyone,
This question comes in my mind today suddenly.
According to B31.3, if SE<SA, the piping system could pass the displacement stress analysis.
SA=f(1.25Sc+0.25Sh) or SA=f(1.25(Sc+Sh)-SL)
Either of those two equations depends on Factor f, or say, Cycles N.
Let's assume there are two...
According to CSA B52 clause 7.10, the room ventilation required to exhaust is based on the system refrigeration charges. What I know now is the HP of the ammonia compressor. How could I estimate the exhaust fan flow rate?
Thanks ahead.
The thermal stress is considered as Displacement stress, and seismic as Occasional stress. They are calculated separately. I guess you should us B31.1 because it is a pipe for geothermal power plant, and should check Eq. 12 from the code.
