Compressible Flow Unit

Compressible Flow Unit

An Advanced versatile apparatus, based around a variable-speed air compressor, designed to teach the concepts of compressible flow.  
The basic unit contains everything required to demonstrate the fundamental principles,
A radial fan with infinitely variable speed control draws in air from the environment.  
At the intake the airflow is accelerated in a measuring nozzle.  
Further down the measuring section the air flows through interchangeable measuring objects.  
Drawing in the air and the arrangement of the measuring objects on the intake side of the fan minimizes turbulence when flowing into the measuring objects.  
All measuring objects are made of transparent material and provide excellent insight into the inner structure.

FEATURES:
Investigate flow of compressible fluids
Subsonic and transonic air flow
Variable speed on the radial fan for adjusting the mass flow rate
Pressure losses in subsonic flow in pipe elbows and various pipe sections
Pressure curve at subsonic and transonic nozzle flow
Minimized turbulence by drawing in air and optimum arrangement of the measuring objects
Transparent measuring objects with connectors for pressure measurement provide insight into the internal structure
Measuring nozzle for determining the mass flow rate
Orifice for determining volumetric flow rate by differential pressure measurement
Record fan characteristic curve using a throttle valve
Digital displays for pressures, velocity and speed

SPECIFICATION:
Radial fan:
Max. Speed: 31000min-1
Max. Volumetric flow rate: 226m3/h
Max. Head: 318mbar
Max. Power consumption: 1,8kW

Measuring objects
Pipe section: 1m
Ø 16, 24, 34mm
90° pipe elbow
2 nozzles, inner diameter: 12…34mm
With sudden enlargement
With gradual enlargement (de Laval nozzle)
Orifice with orifice disks: Ø 12, 19, 25, 32mm
Throttle valve: Ø 34mm

Measuring ranges:
Speed: 0…99999min-1

Pressure:
1x 0…25mbar
1x 0…600mbar
1x 0…1000mbar

Velocity: 0…65m/s
230V, 50Hz, 1 phase