C Expt four Venturi inmiscuirse

 Essay regarding C Expt 4 Venturi meter





Time Performed: January 02, 2014


Submitted simply by:

Ephrem Ruben O. Agorob


Jill Carlotha G. Cajote


Jacqueline Faye D. Lim


Melody Kimberly D. Pitoc



Engr. Edwin Richard R. Ortiz

Date Posted: December 2009, 2014

one particular


Experiment 5

ABSTRACT: Venturi meter is actually a tube that measures the flow rate of essential fluids in the pipe by raising the velocity and decreasing the pressure mainly because it passes through the throat. Through this activity, the coefficient of discharge (CD) of the venturi meter was identified simply by series of trial which actions the circulation rate and pressure drop of drinking water at .5, 1/4 and 1/8 starting of the pipe. The DISC of each starting that were extracted from calculation were 0. 8536, 0. 6112 and zero. 1062 respectively. Errors in the experiment were mostly brought on by low circulation rate which in turn resulted to low Reynolds number of the fluid. The results as well showed the greater the Reynolds volume of the liquid, the greater the CD. KEYWORDS: venturi meter, coefficient of discharge, Reynolds number ADVANTAGES

For several operations in industrial plants, there is a

critical need to measure the liquefied flow level. Failure to

take accurate flow measurements can cause disastrous

results and may fail a surgical procedure. That is why many

flow-measuring equipment are injected in pipelines to

screen the stream rate from the liquid. For many liquid

flow-measuring instruments, the flow level is determined inferentially by calculating the liquid's velocity and also the change in kinetic energy.[1] The driving force

that makes a fluid flow in a conduit is a pressure differential and the velocity of the liquefied in the conduit is dependent through this pressure differential box.

Flow yards available for closed-piping systems may

generally always be classified as differential pressure, positive

shift, velocity, and mass metres. The most

frequently used today is the differential pressure. Differential pressure flowmeters use Bernoulli's equation to gauge the flow of fluid in a pipe. These kinds of flowmeters present a constriction in the tube that creates a pressure drop across the flowmeter. At the neck is the

optimum velocity. When the flow boosts, more

pressure drop is created. The gear pressure,

which is the difference between upstream and

downstream pressures of the flowmeter is assessed to

identify the fluid flow.[2]

Probably the most commonly used flow-measuring devices in the marketplace is the venturi meter. Venturi meters, which usually low long term pressure damage, only about 15%, are commonly used in the water supply industries.

minimum cross-sectional region, maximum velocity, and

lowest pressure inside the meter. The exit percentage of the

colocar is a diverging cone with an position of 5o to 7o,

which accomplishes the changeover back to full pipe diameter.[3]

Fig. 1 . Venturi colocar

Applying Bernoulli's equation to a streamline touring

down the axis of the horizontally tube gives,

eq. 1

From continuity, the can range f velocity Vb can be substituted out of the above equation to offer,

eq. 2

Solving to get the upstream velocity Se till att du ar and growing

by the cross-sectional area Luke weil gives the volumetric

flow rate Q,


The entrance to a venturi m, as proven in the physique

below, is actually a converging cone with a 15o to 20o angle. This

converges to the can range f, which is the purpose of

eq. 3


Research 4

Suitable fluids might obey formula 3 over but the tiny

amounts of energy converted into high temperature within viscous

boundary tiers tend to lower the actual speed of real

fluids.[4] A discharge pourcentage, c, is normally introduced to account for the viscosity of fluids, yielding an equation:

frequency. 4

Wherever Q = discharge,

DISC = relieve coefficient,

hA = mind at upstream section,

hi-def = brain at...

Offered: [1] Liquid Flowmeters

http://www.omega.com/techref/flowcontrol.html(Date accessed: 9 December 2014)

http://www.flowmeters.com/differential-pressure-technology (Date accessed: 9 December 2014)

[3] Venturi Flowmeter Calculator