Description

DESCRIPTION

The apparatus includes a horizontal Venturi tube, a downstream flow-control valve and manometer tubes. A manometer panel holds the manometer tubes vertically. A common manifold above the tubes has an air pressure-control valve. The base has adjustable feet. The manometer panel has a scale behind the manometer tubes for direct reading of the water levels in the tubes. Plastic materials and corrosion-resistant finishes throughout the equipment protect against corrosion.

Water enters the Venturi meter and its flow-control valve sets the flow rate. This valve is downstream, so it does not cause any upstream turbulence.

To adjust the datum water level in the manometer tubes, students connect a hand-pump (included) to the air valve above the manometer tubes.

To perform experiments, students set and measure the flow rate through the Venturi. They measure the head at the cross-sectional area at the upstream section, and the head at the throat section. They also note the pressure distribution along the rest of the meter. They then repeat the procedure, reducing the flow rate in increments and taking similar readings each time. Students can compare ideal pressure distribution to measured pressure distribution and calculate the coefficients of discharge for the meter.

Detailed Specifications :

The apparatus consists of:

• A Centrifugal pump of 25mm x 25mm with 1/2 HP Motor (ISI – Kirlosker Make)

• S. Sump Tank 80 Ltr. to collect the water.

• S. Measuring Tank 30 Ltr fitted with piezometer tube to measure the discharge. Damper is used to collect the water in M.S. MEASURING TANK for certain time.

• I. pipe of internal dia 25mm and Gunmetal ISI mark Control Valve and regulating valves are used to circulate water.

• Bye-pass line is also used to regulate the discharge.

The apparatus consists of a variable area duct of perpex sheets with eleven piezometer, 7 tube (50cm height) fitted at equal distance. The duct is connected in between inlet and outlet tanks of size 25x 25 x 60 cm each.The tanks are well fiber coated inside to prevent rust hence increase the life of tank.