Basic Question 3

[noel0589]

Hi all,

I'm new and have some basic questions which I would appreciate if some people could answer.
How would I be able to tell a centrifugal, reciprocating, or rotary pump from each other?
Also, what are basic differences and applications of each?
Thank you!

 

[tickle]

http://www.google.com

 

[MortenA]

I would say:

Atted a class at a recognised college/univerisity and get some basic knwoledge of unit operation.

You may also like to check:

http://www.pumpuniversity.com/

Best regards

Morten

 

[Artisi]

head for the localy libary and borrow a book on pumps, it's marvelous what a bit of self study can do for you.

Naresuan University
Phitsanulok
Thailand

 

[Scipio]

Another good website to check out is

http://www.mcnallyinstitute.com.

 

[HamishMcTavish]

Try

http://search.atomz.com/search/?sp-a=00072de4-sp00000000&sp-q=pump&sp-p=Phrase

http://www.pumpschool.com/index.htm

http://www.iglou.com/pitt/index.htm

Regards, HM

No more things should be presumed to exist than are absolutely necessary - William of Occam

 

[CARF]

http://www.gowcb.com/

> products > pumps

Good luck,

 

[mmmumuw]

http://www.bumicahayaunggul.com.

It is a local rep, but good enough to make a brief answer of what u r asking
Thx

 

[MikeHalloran]

1. Their external appearances differ.
2. Their behaviors differ:
- A rotary pump, of which there are dozens of subtypes, behaves like a constant current source.
- A reciprocating pump behaves like a constant current square wave source, e.g. a charge pump. Multicylinder recips behave like a polyphase charge pump.
- A centrifugal pump, of which there are several subtypes, behaves like a constant voltage source at low flows, and like a constant current source at low pressures. In between, where its best efficiency lies, it sort of transitions between the asymptotes.

All are parametrically linear in flow with shaft speed, to a first approximation.

In general,
- Rotary pumps are used at modest pressures, where uniform flow is an important characteristic.
- Recips are used to develop high pressures. Their output has a lot of 'AC' in it.
- Centrifugals are used where a compliant source can be tolerated or is a good thing. They are generally cheap, durable, and dirt- tolerant.




Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA