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Experiments With A Radial Fan

Experiments With A Radial Fan

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Product Description

EXPERIMENTS WITH A RADIAL FAN
  • Radial fans are used to transport gases with nonexcessive pressure differences.
  • The experimental unit HM 280 provides the basic experiments to get to know the operating behaviour and the important characteristic variables of radial fans. The software for data acquisition and visualisation makes the experiments especially clear and enables fast execution of experiments with reliable results.
  • The radial fan with flanged drive motor features free speed adjustament. The transparent intake and delivery pipes enable stable stationary flow conditions. The air flow is set by a throttle valve at the end of the pressure pipe. To demonstrate the effect of different blade shapes two impellers are included in the scope of delivery: one impeller with forward curved blades and one with rear curved blades. The impellers are easy to replace.
  • Using the software the differential pressure, flow rate, speed, power and temperature are displayed and characteristics recorded. The flow rate is determinated via measured differential pressure.
  • The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Learning Objectives / Experiments
  • Operating behaviour and characteristic variables of a radial fan
  • Recording the fan characteristic (pressure difference as a function of the flow rate)
  • Effect of the rotor speed on the pressure
  • Effect of the rotor speed on the flow rate
  • Effect of different blade shapes on the fan characteristic and efficiency
  • Determination of hydraulical power output and efficiencies
Specification
  • Functioning and operating behaviour of a radial fan
  • Radial fan with 3-phase AC motor
  • Variable speed via frequency converter
  • Transparent intake and delivery pipes
  • Throttle valve to adjust the air flow in the delivery pipe
  • Interchangeable rotors: 1 rotor with forward curved blades and 1 rotor with backward curved blades
  • Determination of flow rate via intake nozzle
  • Display of differential pressure, flow rate, speed, electrical power consumption and hydraulical power output, temperature and efficiency
  • Microprocessor-based measuring technique
  • Unit-specific software for data acquisition and operation via USB under Windows Vista or Windows 7
Technical Data
Intake pipe
  • Inner diameter: 90mm
  • Length: 430mm
Delivery pipe
  • Inner diameter: 100mm
  • Length: 530mm
Radial fan
  • Power consumption: 110W
  • Nominal speed: 2800min-1
  • Max. volumetric flow rate: 480m³/h
  • Max. pressure difference: 300Pa
Displayed / measuring ranges
  • Differential pressure: 0...1800Pa
  • Flow rate: 0...1000m³/h
  • Temperature: 0...100°C
  • Speed: 0...3300min-1
  • Electrical power consumption: 0...250W
Dimensions and Weight
  • LxWxH: 670x340x970mm
  • Weight: approx. 23kg
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