Effect on atm pressure for Cavitation
Effect on atm pressure for Cavitation
(OP)
Any comments for relation between fluid temperature and atmospheric pressure to Cavitaion. if the pump used at sea level, there must be a different with the pump used at high altitude (on top of the hill). The water boiling temperature also will be change. Is it can be the effect in pump perfoemance?





RE: Effect on atm pressure for Cavitation
Naresuan University
Phitsanulok
Thailand
RE: Effect on atm pressure for Cavitation
Ha = Absolute pressure - (function of barametric pressure)
Hvpa = vapour pressure - (function of liquid temp.)
Hst = product level from pump centre line -(either + or - )
Hfs = all suction losses - (function of friction etc)
Naresuan University
Phitsanulok
Thailand
RE: Effect on atm pressure for Cavitation
RE: Effect on atm pressure for Cavitation
RE: Effect on atm pressure for Cavitation
tq
RE: Effect on atm pressure for Cavitation
RE: Effect on atm pressure for Cavitation
RE: Effect on atm pressure for Cavitation
Naresuan University
Phitsanulok
Thailand
RE: Effect on atm pressure for Cavitation
TQ for all the comments
RE: Effect on atm pressure for Cavitation
Naresuan University
Phitsanulok
Thailand
RE: Effect on atm pressure for Cavitation
Best thing to do is calculate it. Good website to use is www.engineeringpage.com > Pumps > Pump conditions. Helps to calculate the NPSH_a.
If you need the vapour pressure you can use the curve that the physical properties database provides on the same site. Alternatively the steam tables will do the job.
Best regards, Wim
RE: Effect on atm pressure for Cavitation
RE: Effect on atm pressure for Cavitation
My suggestion is you do some reasearch / learning on the subject, a good place to start is with this site.
http://www.mcnallyinstitute.com/index.html
Naresuan University
Phitsanulok
Thailand
RE: Effect on atm pressure for Cavitation