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HM 282 Experiments with an Axial Fan
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Hydraulic Fluid Energy Machines /

The experimental unit HM 282 provides the basic experiments to get to know the operating behaviour and the important characteristic variables of axial fans. The software for data acquisition and visualisation makes the experiments especially clear and enables fast execution of experiments with reliable results. 
  The axial fan with drive motor features free speed adjustment. The long and 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. 
  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

  an axial fan
  * record fan characteristic (differential pressure as a

    function of the flow rate)
  * calculate the flow rate from the measured

    differential pressure 
- effect of the impeller speed on the efficiency and

  delivery data


[1] investigation of the flow rate and differential pressure in the model of an axial fan
[2] axial fan with drive motor
[3] adjustable speed
[4] transparent intake and delivery pipe 
[5] throttle valve to adjust the air flow
[6] determination of flow rate via measured differential pressure

[7] display of differential pressure, flow rate, speed, power and temperature
[8] LabVIEW software for data acquisition via USB under Windows XP, Windows Vista or Windows 7


Technical Data

Intake pipe
- inner diameter: D=110mm
- length: L=275mm
Delivery pipe
- inner diameter: D=110mm
- length: L=310mm
Axial fan
- max. flow rate: ca. 600m³/h
- max. differential pressure: ca. 700Pa
- nominal speed: 9.500min-1
- power consumption: 90W


Measuring ranges
- pressure: 0...1.800Pa
- flow rate: 0...1.000m³/h
- temperature: 0...100°C

Dimensions and Weight
LxWxH: 670x340x370mm
Weight: approx. 20kg
Required for Operation
230V, 50/60Hz, 1 phase
Scope of Delivery

1 experimental unit

1 LabVIEW software CD + USB cable
1 set of instructional material

Order Details
070.28200  HM 282  Experiments with an Axial Fan