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chandruu
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PD Blowers

07/06/2011 7:57 AM

what is the diff. between blowers and positive displacement blowers?
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PWSlack
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#1

Re: PD Blowers

07/06/2011 9:17 AM

To understand the difference, try closing a valve downstream of each. Only, please make sure that no CR4 reader is close to the PD one when it explodes.

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lyn
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#2

Re: PD Blowers

07/06/2011 7:45 PM

Positive displacement blowers have sealed compression chambers.They pump a specific volume of fluid with each revolution.

Non-positive displacement blowers (centrifugal, etc.) allow fluid to bypass the compressor.

Output of positive displacement blowers is regulated by pump speed, mostly.

Other types can be throttled with valves.
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34point5
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#3
In reply to #2

Re: PD Blowers

07/06/2011 8:53 PM

GA - grudgingly of course ;-)

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lyn
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#4
In reply to #3

Re: PD Blowers

07/06/2011 8:56 PM

Doesn't matter. Somebody'll just vote it OT. I lost 5 GA's one day a week or so ago.

I was devastated.
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ky
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#5
In reply to #4

Re: PD Blowers

07/06/2011 9:52 PM

Forceful displacement

GA for the previous.

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34point5
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#6
In reply to #4

Re: PD Blowers

07/06/2011 10:01 PM

"Hell hath no fury ......." I.e. if your latest girlfriend doesn't OT it, mine probably will. :-))

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lyn
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#7
In reply to #6

Re: PD Blowers

07/06/2011 10:14 PM

I've been married since I was 5.

OK, maybe it just seem that way.
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34point5
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#8
In reply to #7

Re: PD Blowers

07/07/2011 12:53 AM

Well hopefully She appreciates if their names ends in dot com, they probably aren't real

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pritam
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#9

Re: PD Blowers

07/13/2011 6:04 AM

All blowers are generally rotary type. Reciprocating are very rare.

Rotary type is further classified in to two- Turbo blowers and PD blowers.

Turbo blowers are centrifugal or axial blowers and these are Non-PD type.

PD rotary blowers are Lobe blowers (two lobe or three lobe), vane blowers, screw blowers, water ring blowers etc.

Refer Lyn #2 for difference.
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