Two-Stage Axial Fan
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Product Description
TWO-STAGE AXIAL FAN
The was designed for measuring the fan characteristic curve of a two-stage axial fan. For this purpose 2 identical, speed regulated fans are fitted in a pipe. Connections for differential pressure measurement are fitted at appropriate points. Temperature and pressure are measured electronically before and after each stage. A 3-hole sensor with position measurement facilitates the measurement of speed distributions at impellers and guide wheels. In addition, speed and flow rate are measured. For comparison to the fans connected in series, the fans can also be operated separately. The fans each have individually adjustable blades and a guide wheel. All measured data is displayed on the unit and can be processed in other applications by means of the PC data acquisition.
Learning Objectives / Experiments
- Determining the fan characteristic
- Series configuration or individual operation of axial fans
- Determining the energy balance
- Determining the radial pressure and velocity
- Distribution on rotor and guide vane system by means of a probe
- Effect of the blade position
Specification
- Investigate two-stage axial fan
- 2 identical single-stage fans in series configuration or individual operation
- Individually adjustable blades
- Fans both with variable speed via frequency converter
- Flow-optimised nozzle and flow straightener for smooth, low-turbulence flow
- Air flow in the pipe section can be adjusted via throttle valve
- Optional pipe bend at the outlet for flow deflection
- Measuring device with three-hole probe for determining the differential pressure on rotor and guide vane system
- Sensors for pressure and temperature upstream and downstream of each fan
- Volumetric flow rate measured via inlet nozzle
- Software for data acquisition via USB under Windows Vista or Windows 7
Technical Data
2 fans
- Drive motor rated output: 3,45kW
- Max. pressure difference: 798Pa
- Speed: 0...2850min-1
- Blade angle adjustable up to 39°
- Measuring section inner diameter: 400mm
Measuring ranges
- Temperature: 0...100°C
- Differential pressure: -25...25mbar
- Radial position of the probe: 100...200mm
Dimensions and Weight
- LxWxH without pipe outlet: 4400x990x1860mm
- Length with pipe outlet: 5225mm
- Weight: approx. 270kg
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