Water flows through a Venturi meter at shown below. The pressure of the water in
ID: 2161558 • Letter: W
Question
Water flows through a Venturi meter at shown below. The pressure of the water in the pipe supports columns of water that differ in height by 28 cm. The cylindrical pipe and the constriction have diameters of 8 cm and 4 cm. respectively. Determine the difference in pressure between point A and point B in kPa and mm .Hg What is the absolute pressure at point A in bar Docs the pressure increase or decrease in the direction of flow? What do you think this device is used for? Explain your answer. Hint: what happens if the flow rate increases?Explanation / Answer
a.difference in pressure=gh =997*9.81*0.28 =2738.55 Pa
b.absolute pressure=atmospheric pressure+2738.55=103+2.738=105.738 KPa
c.pressure decreases as shown by decrease in height of vaenturi meter
d.device is used for measuring flow rate as flow work changes the velocity
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