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AIM
Knowing the air pressure inside the pipe with barrier smaller diameter than the diameter of the air pipe being used. In the measurement of air pressure in the pipe by using a manometer.
THEORETICAL BASIS
Bernoulli's Law states that the pressure of the fluid that moves such as reduced air when the fluid moves faster. Bernoulli law discovered by Daniel Bernoulli, a Swiss mathematician who discovered it in the 1700s. Bernoulli using mathematical basis for formulating the law.
There are several assumptions Bernoulli's Law include:
Incompressible fluid (incompressible) and nonviscous.
There is no loss of energy due to friction between the fluid and the pipe wall.
There is no heat energy is transferred across boundaries both as a pipe for fluid heat gain or loss.
There is no pump in the pipe section
Laminar fluid flow (permanent)
Information:
P = Tekananal (Pascal)
v = velocity (m / s)
p = density of the fluid (kg / m ^ 3)
h = altitude (m)
g = acceleration due to gravity (9.8 m / s ^ 2)
The above equation applies to non-compressed stream with the following assumptions:
The flow is steady (steady state)
There is no friction
In other forms, Bernoulli equation can be written as follows:
Application of Law Bernoulli Bernoulli's Law beneficial to human life, some applications Bernoulli's application of the law is as follows:
Torriceli / Water Tank
Venturimeter
manometer
Style Lift Aircraft
Pitot tube
Measurement Venturi
Venturi measuring instrument (venturimeter) installed in a pipe flow to measure the flow rate of a substance GAS. A GAS substance of density? flowing through a pipe cross-sectional area A1 in the area (1). In the area (2), the cross-sectional area decreases to A2. A tube manometer (U pipe) contain other liquids (vegetable oils) with a density of? Oil is mounted on the pipe.
Venture with manometer
In principle venturimeter with manometer almost equal to venturimeter without manometer. Only in this venturimeter No U tube containing mercury. Consider the following picture.
Venturimeter with manometer system
Based on the same derivation venturimeter without manometer, fluid flow velocity v1 obtained are as follows.
Ket:
V: velocity of fluid flow gas
? R: density of mercury
? U: the density of air
A1: spacious large pipe
A2: spacious tubule
TOOLS AND MATERIALS
PIPE
HOSE MANOMETERS
RULER
FLUID (vegetable oil)
VISS
GRAGAJI IRON
LEM PIPA
KROMPESOR
STEP MAKING
Prepare all materials (pipes, hoses, VISS, ripet, gragaji iron)
Cut the pipe along 35 cm X 2 with gragaji
Entered VISS on large diameter pipes
Connect the pipe with a pipe fitting
In the drill pipe for hose fitting manometer
Manometer hose fitting at the hole that has been thoroughly or
Fluid entering the hose manometer
WORK STEPS
Prepare the entire tool
Peletekan parallel pipeline
See the flatness of the fluid / balanced
Entering the air pressure in the pipe
Measuring air pressure manometer with a ruler
COUNTING
In this practice in question is v (velocity of fluid flow gas)
Dik:
? Oil: 920 kg / m3
? Air: 1.2 kg / m3
D1: 24 cm
D2: 15 cm
g: 10 m / s2
h: 7.5 cm => 0,075 m (with the measurement results on experiments)
Dit:
v?
Discussion
Area of a circle A1?
A1 = p / 4 .d1 ^ 2
A1 = 3.14 / 4.? 24? ^ 2
A1 = 1808.64 / 4
? A1 = 452,16cm? ^ 2 => 4.5216 m ^ 2
Area of a circle A2?
A2 = p / 4 .d2 ^ 2
A2 = 3.14 / 4.? 15? ^ 2
A2 = 706.5 / 4
? A1 = 176,625cm? ^ 2 => 1.76625 m ^ 2
V?
V1 = v ((2.?minyak.g.h) / (? Air (A1 / A2) ^ 2-1))
V1 = v ((2 .920 kg / m ^ 3. 10 m / s ^ 2. 0,075 m) / (1.2 kg / m ^ 3 ((4,5216m ^ 2) / (1,76625m ^ 2) ) ^ 2-1))
V1 = v ((1840 kg / m ^ 3. 10 m / s ^ 2. 0,075 m) / (1.2 kg / m ^ 3 (2.56) ^ 2-1))
V1 = v ((1840 kg / m ^ 3. 10 m / s ^ 2. 0,075 m) / (1.2 kg / m ^ 3 (6.5536) ^ -1))
V1 = v ((1380 m.m / s ^ 2) / 6.86432)
V1 = 201.03 m.m / s ^ 2
CONCLUSION
When a small surface area, the high air velocity so that the pressure generated is small. And vice versa, if the large surface area of the smaller air kecepan so the pressure was greater
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Judul: Venture with manometer
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Judul: Venture with manometer
Rating: 100% based on 99998 ratings. 5 user reviews.
Ditulis Oleh Suryadi amin
Semoga informasi mengenai Venture with manometer bisa memberikan manfaat bagi Anda. Jangan lupa Komentar Anda sangat dibutuhkan, di bawah ini.
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