Which is better Venturimeter and Orificemeter?

Which is better Venturimeter and Orificemeter?

The Venturi meter can handle large range of flow rates of fluid than the Orifice meter but once the Venturi meter is installed the range of flow rates it can handle becomes fixed. Thus, Orifice meters offer much more flexibility of operation.

What are the similarities and differences between Venturi and Orifice meters?

Venturimeters are widely used for high flow rates. They can handle 25-50% more flow rate than an orifice. Orifice plates are smaller in size when compared to venturimeters. It can be used in a wide range of pipe sizes from 3.175 mm to 18211.8 mm.

What is the difference between orifice meter and orifice plate?

The major difference between venturimeter and orificemeter is the Venturimeter is not flexible with the flow rate range while the orifice plate in the orifice meter can easily change for different flow rates.

Can Venturimeter be used vertically?

High discharge coefficient and very low-pressure drop. Venturimeters can be installed in a horizontal, inclined, or vertical direction.

What is the difference between Venturimeter and pitot tube?

The reason is that there is no stagnation point in a venturi meter, whereas there is one in a pitot meter. Both rely upon Bernoulli’s equation, but use different terms. The venturi meter takes advantage of a constriction to change the speed of fluid flow, thus changing the dynamic pressure.

What is the use of Venturimeter?

A venturi meter is also called a venturi flowmeter. It is used to calculate the velocity of fluids in running through a pipeline. The fluid may be a liquid or a gas. The meter consists of a pipe with a narrowing throat that expands back to it’s original diameter on the other side of the choke point.

What are the advantages and limitations of a Venturimeter over Orificemeter?

Advantages of venturi meter: Its behaviour can be predicted perfectly. It can be installed vertically, horizontally, inclined. They are more precise and can be used for a wide range of flows. About 90% of the pressure drop can be recovered.

What are the advantages & disadvantages of Venturimeter?

Advantages and disadvantages of Venturi meter

• High-pressure recovery.
• High coefficient of discharge.
• Smooth construction and low cone angle help to solid particles flow through it.
• It can be installed in any direction horizontal, vertical and inclined.
• More accurate than orifice and flow nozzle.

What is H in Venturimeter?

h= Pressure heads. Cd= Coefficient of Discharge.

What is the difference between a venturi meter and an orifice meter?

Venturi Meter versus Orifice Meter:- Venturi meters and Orifice meters are devices which are used to measure average velocity, volumetric flow rate or mass flow rate of a flowing fluid by reducing the pressure of the flowing fluid.

How is the flow velocity of a venturi meter measured?

In a venturi meter,the flow velocity is measured by noting the pressure differences between the inlet and the throat of the venturi meter ,whereas in the orifice meter the discharge velocity is measured by using a pitot tube or a trajectory method.

What is the difference between an orifice meter and a pressure tap?

Pressure taps are provided before the converging part and at the throat in order to measure the drop in pressure. An orifice meter is consists a thin plate with a bore on the plate. This plate acts as a restriction.

Why is the CD in the venturi meter so low?

This eddies consumes lots and lots of mechanical energy of the fluid. In Venturi meter there is a gradual decrease in the area at the throat. So no eddies formation. This additional pressure drop in orifice meter, due to eddy formation is the reason for relatively low Cd.