What is beta ratio in Venturi?
BETA RATIO (β): The ratio of the inside of the diameter throat of the venturi to the inside diameter of the pipe at the plane of the upstream Pressure Taps.
What is beta in orifice?
The ratio of orifice bore diameter (d) to the pipe inside diameter (D) is called. the Beta Ratio (β ). β = d/D. The orifice plate has a typical bore diameter that ranges from 30% to 75% of the inside diameter of the pipe work in which it is installed.
What is the beta ratio for an orifice plate?
In general, an orifice plate will typically exhibit a bore diameter between around 30 to 75% of the pipe inside diameter. A beta ratio of 0.6 therefore exhibits that the orifice bore diameter is 60% of the pipe inside diameter. Therefore, the smaller the beta ratio, the higher the differential pressure generated.
What is difference between orifice meter and venturi meter?
The difference between venturi meter and orifice meter are: Whereas the orifice meter consists of a thin plate and a bore. The pressure loss in venturi meter is 10% while in the orifice meter the pressure loss is 50-60%. The coefficient of discharge in the venturi meter is 0.98 while in orifice meter it is 0.6.
How does the venturi meter and orifice meter work?
This lab will investigate the venturi meter and orifice meter, both of which indirectly measure flow rate. They measure the flow rate by means of a pressure change. The venturi meter has a converging section of pipe that causes the fluid’s velocity to increase, which creates a drop in the pressure.
What should the beta ratio of a venturi nozzle be?
Low Beta Ratio and High Beta Ratio. ASME flow nozzles, or long radius nozzles come in 2 versions, known as the low beta ratio and high beta ratio designs. Low beta nozzles are recommended for diameter ratios between 0.20 and 0.50. High beta nozzles are recommended for diameter ratios between 0.45 and 0.80.
How to calculate orifice, nozzle and Venturi flow rate?
Orifice, Nozzle and Venturi Flow Rate Meters 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
What was used in the venturi meter experiment?
The apparatus for this experiment contained an orifice meter and plate, a venturi flow meter, a rotameter, a weighing bucket with a scale, a stopwatch, and manometers that corresponded to the different meters used. A picture showing the different flow meters is in Figure 1.
