2007-08-01 15:31:29 · 8 answers · asked by jave_j_2007 1 in Science & Mathematics ➔ Engineering
An orifice, in general is an opening. I'll just leave it at that.
In piping it is usually a special device used primarilly to measure or restrict the flow of a fluid. These are called metering devices.
Here is an example of one type.
A flat metal disc with a known diameter hole is called an orifice plate. It is clamped between special flanges in a section of straight pipe and centered in the pipe so that the fluid flowing through the pipe also passes through the hole and then proceeds on down the pipe.
The two special flanges both have a small hole ( called a tap) drilled thru the sides and on into the pipe opening where the flow is passing. The pressure from the upstream side or "tap" of the orifice plate is compared to the downstream pressure.
Since it is known that pressure drop and velocity are related the measured pressure drop across the known orifice is used in the flow calculation.
Other orifice-type metering devices are used to limit a flow within a certain range. This is common in variable orifice control valves where a tapered plug changes the size of the orifice opening.
Another less common orifice plate application in piping is in flow restriction in the event of a pipeline rupture.
In refrigeraton a common metering device called a capillary. This is actually a smaller diameter tube which does the same as a hole in a flat plate, but does it better.
2007-08-02 10:24:33 · answer #1 · answered by Bomba 7 · 3⤊ 0⤋
Define Orifices
2016-12-15 09:21:21 · answer #2 · answered by ferraro 3 · 0⤊ 0⤋
This Site Might Help You.
RE:
what is orifice (in piping term) and what is the function of orifice in pipes?
2015-08-18 20:00:12 · answer #3 · answered by Lakia 1 · 0⤊ 0⤋
An Orifice is a small hole which is used to meter a liquid or a gas. In an a/c it meters the freon when it is in a high pressure liquid causing a drop in pressure which causes the liquid to evaporate.
In a gas like LP or natural gas it meters the pressure before combusion in stoves or furnaces. Orifices are used in many applications, such as hydralics, pneumatics, hydronics and so forth. But they all have the same function as a metering device.
2007-08-01 15:46:11 · answer #4 · answered by John S 1 · 0⤊ 0⤋
Orifice is small passage ( generally a hole) through which liquid passes and creates turbulance in the pipe line for proper mixing of two types of media.( like you want to mix liquid with gas ...)
Another application of Orifice is for metering purpose.When you pass liquid from small passge then pressure decrases and flow increases.This is the base of some flowmeters.
2007-08-01 20:12:52 · answer #5 · answered by bond_thejamesbond 1 · 0⤊ 1⤋
What Is An Orifice
2016-10-07 07:10:30 · answer #6 · answered by theberge 4 · 0⤊ 0⤋
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The flow rate is equal to a constant times the square root of the differential pressure across the orifice plate. Choose one of these sites to use to back into the answer.
2016-04-01 06:47:11 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Yes, it can. You just need to add or subtract from the pressure measurement the pressure difference due to difference in elevation. If that is very nearly zero then it can be omitted.
2016-03-22 13:45:08 · answer #8 · answered by Deborah 4 · 0⤊ 0⤋
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2015-08-05 09:21:29 · answer #9 · answered by Anonymous · 0⤊ 0⤋
the opening
2007-08-01 15:37:08 · answer #10 · answered by bedbye 6 · 0⤊ 0⤋