What is the basic equation of Venturi meter?
The venturi meter device measures the flow rate or velocity of a fluid through a pipe. The equation is based on the Bernoulli equation, conservation of energy, and the continuity equation….Change Equation.
| Q | = | flow rate |
|---|---|---|
| A1 | = | Area 1 |
| A2 | = | Area 2 |
| P1 | = | Pressure 1 |
| P2 | = | Pressure 2 |
How do you find the pressure difference in a Venturi meter?
The pressure difference is measured between a point equal to the diameter of the tube upstream of the orifice and a point equal to half the diameter downstream. The orifice plate has the usual non-linear relationship between the pressure difference and the volume rate of flow.
What is measured using Venturi meter?
A Venturi Meter is mainly used to estimate the rate of flow of liquid through a pipe by decreasing the cross-sectional area and creating a gradient of pressure. Hence, a Venturi meter is used to measure the rate of flow of fluid flowing through a pipe.
What is H in Venturimeter?
h= Pressure heads. Cd= Coefficient of Discharge.
What is Venturimeter function?
Venturimeter is used to measure the rate of flow through a pipe. Venturimeter consists of a converging portion, throat and a diverging portion. The function of the converging portion is to increase the velocity of the fluid and temporarily lower its static pressure.
How do you use a 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.
How does a Venturimeter work?
A venturi works by measuring the difference in pressure at two different locations. The pressure difference is created by reducing the diameter of the pipe causing the fluid to flow faster. The fast moving fluid has a lower pressure than the slower fluid in the larger section of the venturi.
How do you use a venturimeter?
How does a venturi meter measure flow?
When a venture meter is placed in apipe carrying the fluid whose flow rate is to be measured, a pressure drop occurs between the entrance and throat of the venturimeter. This pressure drop is measured using a differential pressure sensor and when calibrated this pressure drop becomes a measure of flow rate.
What is Venturimeter?
Venturi meters are flow measurement instruments which use a converging section of pipe to give an increase in the flow velocity and a corresponding pressure drop from which the flowrate can be deduced. They have been in common use for many years, especially in the water supply industry.
How to calculate the density of a venturi meter?
When the fluid whose flow is being measured by an orifice, flow nozzle, or venturi meter is a gas, the density is a. function of both temperature and pressure, so a means of determining the density of the gas at the pipeline temperature and pressure is needed. The ideal gas law, in the form ρ = (MW)P/RT, can be used for this purpose.
Can you use Excel to calculate a venturi meter?
Excel spreadsheet formulas can be conveniently used to make calculation for differential pressure flow meters, like an orifice flow meter, a venturi meter, or a flow nozzle meter. The following sections in this article present three Excel templates for such calculations.
How is the Bernoulli equation related to the venturi effect?
The Bernoulli equation can be considered as a principle of conservation of energy, suitable for moving fluids.The behavior usually called “Venturi effect” or “Bernoulli effect” is the reduction of fluid pressure in areas where the flow velocity is increased.
How does the orifice, nozzle and Venturi flow rate meter work?
The orifice, nozzle and venturi flow rate meters use the Bernoulli Equation to calculate fluid flow rate using pressure difference through obstructions in the flow In a flow metering device based on the Bernoulli Equation the downstream pressure after an obstruction will be lower than the upstream pressure before.