littleinch and artisi sirs, we have a question here regarding npsha please do that, do not spend time in idle talk what, does that relieve some unwanted feelings in your sytem?
no more correspondence with you two!
Gentlemen, thank you but the question was for Npsha, not Npshr, if you read above
Required: To calculate Npsha for propane to same datum. Point is to calculate this from the 9.7 ft for ethylene, with somewhat minimal calculations, rather than from scratch (in other words, consider the fairly...
Yes, I understand!
This is a cryogenic in-pot centrifugal pump designed for ethylene service, but tested on propane
Ethylene VP 282 psia SG 0.44 Viscosity 0.074 cp Npsha 9.7 ft to inducer c'l Pumping temp -23 F Flow 2160 gpm Npshr 5.2 ft to same datum
Propane VP higher...
A PUMP HAS ITS NPSHA DEFINED. IT IS DECIDED TO USE THE SAME PUMP WITH A DIFFERENT LIQUID.
THE TWO FACTORS THAT WOULD AFFECT THE NPSHA WOULD BE THE NEW VAPOR PRESSURE AND THE NEW SP GR.
IS THERE A RULE OF THUMB TO EVALUATE THE NPSHA WITHOUT HAVING TO DO MORE DETAILED CALCULATIONS?
THANK YOU...
hello i have a question regarding this figure
take fluid with k = 1.30 and a compression ratio of 9 go x direction and meet curve which is about 72% isentropic efficiency following the curved path and 72% polytropic efficiency
if we take the straight vertical lines we would read about 64%...
your answer is clear and thanks but just clarify the connector reads 15 amperes 125 v and we are in the us is this single phase in the garage three connections for single phase?
regards
green to green is easy on the cable the remaining two are black and white on the female connector one of the screw is silverish, the other is a little yellowish
where does the black go, and where the white?
i have seen similar questions in other forums
one answer said put this on the hot...
ASSUME API PLAN 76 pumps. FOR MOST CASES, WHAT SHOULD BE THE SETTING OF THE P I T IN THE FLUSH LINE?
THANK YOU
Aamir
also could you plese tell me hot to contact the MVPs of our forums
i AM NOT CLEAR ABOUT THE SPECIAL PARAGRAPHS OF API 684 LIKE SP------
WHAT IS THEIR SIGNIFICANCE THEY ARE GIVEN RIGHT AT THE END AND ALSO IN BETWEEN ARE THEY INDICATING THE MORE CRITICAL ASPECTS OF API 684 REALLY WHAT ARE THEY? OR WHAT ARE THEY NOT?
IF YOU ARE CLEAR ABOUT THE ANSWER...
COULD YOU HELP WITH A CHEMICAL ENGINEERING PROBLEM
1. GASEOUS FLOW
2. AS OPERATING PRESSURE RISES, GAS DENSITY INCREASES CORRECT?
3. PRESSURE DROP IS DIRECTLY PROPORTIONAL TO SQUARE OF MASS VELOCITY ?
4. INVERSELY PROPORTIONAL TO DENSITY ?
PLEASE BRIEFLY OUTLINE YOUR REASONING...
csk62
no, you have answered a lot, and thank you!
Are you a turbomachinery specialist in an operating plant, consultant ?
Does this system allow that if one is able to achieve an under standing with some one like yourself, then questions could be sent or exchanged with that person rather...
Hello! This subject is a little specialized so if in this forum there is not a specialist in this area, could you please guide me to the correct forum thank you
Briefly, could you tell me the difference between the above four diagrams
thank you very much
Your assistance is appreciated
the usual specification for dryness of instrument air at dryer exit is a pressure dew point of - 40 F. Take the pressure at this location to be 100 psig.
Question is what variables would need to be adjusted:
first, to give this value - 40 F at 100 psig
second...
abeltio (Mechanical) racookpe1978 (Nuclear)
i want to thank both you, but the point was between SHAFT and SPOOL? SHAFT is a well known common term, why bring in SPOOL?
regards
