(a) A venturi meter has throat to upstream pipe cross-section ratio of 0.5.
The fluid flowing is water. The pressure at the entry of converging cone
section is 137.9 kN/m2(a).
What is the velocity at the throat which corresponds to a
pressure of 0 kN/m2(a) at the throat?
If the water is at 200oF,
what is the highest velocity possible at the throat at which water
Data: For water at 200oF,
Density = 980 kg/m3.
Vapor pressure = 75.8 kN/m2(a). (8)
(b) A rotameter with a stainless steel float has a maximum capacity of 1.2 ltr/sec of water.
What will be the maximum capacity for kerosene in ltr/sec for the same rotameter and float? Assume that the Cd for the rotameter is not
changing much with flowrate.
Specific gravity of stainless steel = 7.92
Specifc gravity of kerosene = 0.82 (4)