Why orifice is needed in our daily life?
An orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate ).
What are the advantages of orifice meter?
Advantages of Orifice meter: The Orifice is small plates and easy to install/remove. Offer very little pressure drop from which 60\% to 65\% is recovered. The orifice meter can be easily maintained. Measures a wide range of flows.
Which is more accurate Venturi or orifice?
The Venturi meter is insensitive to changes in velocity vector. The velocity vector of fluid must be perpendicular to the orifice plate for lower pressure loss and better accuracy in measurement of average velocity or flow rate or the flowing fluid.
How does orifice affect flow rate?
An orifice affects flow rate (volume) down, and pressure up, as it decreases in diameter. Vice versa, it increases volume, while dropping in pressure and velocity. It is important to define flow rate more specifically, e.g, volume of flow or velocity of flow.
Does an orifice reduce flow?
A reduction in orifice size results in decreased flow as only so much liquid can pass through the orifice. Since the flow of liquid is limited by the orifice, it follows that the pressure on the exit side of the orifice is less than that on the inlet side.
What are the applications of orifice?
Applications of Orifice Meter
- It is used to measure the flow rate of fluids in their single state (i.e. gaseous state or liquid state).
- It can also be used to measure the flow rate of fluids in a mixed state (both gaseous and liquid states) such as, wet steam, or natural gas with water.
What are the advantages and limitations of an orifice plate?
Advantages and disadvantages of orifice plate Simple in construction, the standards for construction and calibration are readily available. They are cheap; their price does not increase dramatically with size. Easy to install and remove. They are efficient and reliable for many years.
Why should I prefer Venturimeter over an Orificemeter?
1. Both are used to calculate the velocity of a fluid. A venturi meter can be used to measure the flow rates of all incompressible fluids (gases with low pressure variations, as wells as liquids), whereas an orifice meter is generally used for measuring the accelerated flow through the apparatus. 2.
Why orifice meter is cheaper than Venturimeter?
Whereas the orifice meter consists of a thin plate and a bore. The pressure loss in venturi meter is 10\% while in the orifice meter the pressure loss is 50-60\%. The coefficient of discharge in the venturi meter is 0.98 while in orifice meter it is 0.6. The cost of venturi meter is expensive than the orifice meter.
Does orifice reduce flow?
How does a orifice work?
Basic Working Principle of an Orifice Meter The liquid or gas whose flow rate is to be determined is passed through the orifice plate. This creates a pressure drop across the orifice plate which varies with the flow rate, resulting in a differential pressure between the outlet and inlet segments.
How does an orifice work?
What are the applications of orifices in engineering?
Orifices have many applications in engineering practice besides the metering of fluid flow in pipes and reservoirs. Flow entering a culvert or storm drain inlet may act as orifice flow; the bottom outlet of a dam is another example. The coefficients of velocity and discharge are necessary to accurately predict flow rates from orifices. 3.
How does an orifice meter work?
The orifice meter or Plate works on the principle of Bernoulli’s theorem and that is the sum of all the energy at a point is equal to the sum of all the energy at point 2. There are 4 different types that include Eccentric, Conical, Sharp Edge, Segmental, and Quadrant Orifice Plate.
What is an orifice plate in a pipe?
The orifice Meter is a topic of fluid machinery and it is a device that is used to measure the flow rate or average velocity of the flowing fluid (Liquid or gases) in a pipe. Here the orifice plate is used for the restriction in the direction of the fluid flow.
What happens to the pressure as the fluid approaches the orifice?
As the fluid approaches the orifice the pressure increases slightly and then drops suddenly as the orifice is passed.