A benchtop Venturi tube that allows students to study Bernoulli’s thorem by measureing the complete static head distribution along the horizontal tube.
Key Features
• Transparent working section and manometer tubes, provides students with a highly visual display of the experiments
• Robust circular-section Venturi tube for long life
• Multiple manometers for direct measurement of static heads
• Compact and simple to operate
• Works with TecQuipment’s Digital Hydraulic Bench (H1F)* for easy installation
Learning Outcomes
Comprehensive study of a Venturi meter and Bernoulli’s theorem, including:
• Direct measurement of the static head distribution along a Venturi tube
• Comparison of experimental results with theoretical predictions
• Measurement of the meter coeffi cient of discharge at various fl ow rates
Key Specifications
• Eleven pressure tappings
• Downstream fl ow control valve
Description
The Venturi tube in TecQuipment’s Bernoulli’s Theorem is typical of meters used throughout industry. However, it has many more pressure tappings, connecting to water manometers, which allow full study of the pressure distribution along the convergent/divergent passage.
The Bernoulli’s Theorem works with TecQuipment’s Digital Hydraulic Bench (H1F, available separately)* and stands on the hydraulic bench worktop. The benches measure fl ow rate, so students can fi nd the Venturi meter coeffi cients over a range of fl ow conditions.
The apparatus includes a horizontal Venturi tube, a downstream fl ow 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 fi nishes throughout the equipment protect against corrosion.
Water enters the Venturi meter and its fl ow control valve sets the fl ow 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 fl ow 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 fl ow rate in increments and taking similar readings each time. Students can compare ideal pressure distribution to measured pressure distribution and calculate the coeffi cients of discharge for the meter.
Essential Base Unit
• Digital Hydraulic Bench (H1F)*
*This product will also work with existing TecQuipment Gravimetric and Volumetric Hydraulic Benches (H1 and H1D)
