| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
21 Feb 2006 10:04:48 AM |
| Object: |
compressed air receiver flow |
I am hoping someone could calculate or already have a example of the
following.
Compressed air receiver of 200 litres at 150 psi.
At one end a 1 inch valve.
Open the valve - is there likely to be five seconds of flow before the
pressure drops to 100psi
The same query with a 3/4 inch valve.
I appreciate there are some variables like temp and valve restriction
etc etc but a close figure would be okay.
Any ideas appreciated please
Thanks very much
PS If not five seconds of flow then the only thing I can do is use a
larger receiver but then how much larger.................
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| User: "CWatters" |
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| Title: Re: compressed air receiver flow |
21 Feb 2006 11:26:05 AM |
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<technical123@hotmail.com> wrote in message
news:1140537888.084225.21880@g14g2000cwa.googlegroups.com...
I am hoping someone could calculate or already have a example of the
following.
Compressed air receiver of 200 litres at 150 psi.
At one end a 1 inch valve.
Open the valve - is there likely to be five seconds of flow before the
pressure drops to 100psi
The same query with a 3/4 inch valve.
I appreciate there are some variables like temp and valve restriction
etc etc but a close figure would be okay.
I believe it's very critical on valve diameter...
http://oac.med.jhmi.edu/res_phys/Encyclopedia/AirwayResistance/AirwayResistance.HTML
"The most important variable here is the radius, which, by virtue of its
elevation to the fourth power, has a tremendous impact on the resistance.
Thus, if the diameter of a tube is doubled, resistance will drop by a factor
of sixteen."
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| User: "" |
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| Title: Re: compressed air receiver flow |
21 Feb 2006 01:36:29 PM |
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Thanks for trying to help. At least I know going from the present half
inch valve to a 3/4 inch valve will have a vast effect - trying to
avoid more un-needed machine work etc before I try it out.
Any ideas about the pressure receiver size drop....
It maybe I need a 500 litre receiver, thats okay, but before I purchase
it I would like to know if it is likely to be alright. Otherwise I'll
just go ahead and get an even bigger receiver.
Thanks
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| User: "CWatters" |
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| Title: Re: compressed air receiver flow |
21 Feb 2006 02:44:10 PM |
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<technical123@hotmail.com> wrote in message
news:1140550589.317060.243410@g43g2000cwa.googlegroups.com...
Thanks for trying to help. At least I know going from the present half
inch valve to a 3/4 inch valve will have a vast effect - trying to
avoid more un-needed machine work etc before I try it out.
Any ideas about the pressure receiver size drop....
Not really my field but Google suggests the length of the pipe is going to
be important.
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