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Products  |  Fluid Mechanics  |  Hydraulic Fluid Energy Machines  |  HM 287
HM 287 Experiments with an Axial Turbine Show data sheet (pdf file) Print page
Technical Description

  The axial turbine operates as a reaction turbine as used in gas tubines and steam turbines. The water flows through a stator where it is deflected and accelerated. Then, the water hits then the blades on the impeller where it delivers kinetic energy and pressure energy and puts the impeller in motion. The water pressure steadily decreases from the inlet to the outlet. 

  The trainer provides the basic experiments to get to know the operating behaviour and the most important characteristic variables of axial turbines.

  HM 287 features a closed water circuit with an axial turbine, a centrifugal pump and a water tank. The stator with guide wheel and the impeller are mounted in a transparent housing and can be observed during operation. The loading device is outside of the housing. The eddy current brake generates a defined load. The eddy current brake is specially developed by GUNT. It is wear-free and can be finely adusted. The flow rate is adjusted using a valve.

  The trainer is fitted with a sensor for pressure (delivery side). The torque delivered by the turbine is determined via an electronic force sensor. The speed is measured with an optical speed sensor. The flow rate is determined by an orifice plate with differential pressure


  The microprocessor-based measuring technique is well protected in the housing. All the advantages of software-supported experiments and evaluation are offered by the GUNT software and the microprocessor. The connection to a PC is made by USB.

  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / Experiments

- principle of operation of an axial turbine

- determination of the power output
- determination of the efficiency
- recording of the characteristic curve
- comparison of experiment and calculation


* Illustrative model of an axial turbine1
* Transparent turbine housing1
* Adjustable, wear-free eddy current brake as turbine


* GUNT software for data acquisition, visualisation

  and operation1

* Part of the GUNT Labline fluid energy machines

Alternative products
HM 270 -- Air-Operated Impulse Turbine
HM 288 -- Experiments with a Reaction Turbine
HM 289 -- Experiments with a Pelton Turbine
HM 291 -- Experiments with an Action Turbine
HM 405 -- Axial-Flow Turbomachines

[1] functioning and operating behaviour of an axial turbine

[2] closed water circuit contains axial turbine, pump and water tank

[3] transparent housing for observing the stator with guide wheel and the impeller

[4] turbine load using the wear-free and adjustable eddy current brake

[5] valve for adjusting the vacuum flow

[6] force sensor to determine the torque on turbine shaft

[7] measurement of speed and pressure on intake side

[7] determination of flow rate using differential pressure measurement across a measuring orifice
[8] microprocessor-based measuring technique

[9] unit-specific GUNT software for data acquisition and operation via USB under Windows XP,  Windows Vista or Windows 7 


Technical Data

Axial turbine
- power output: approx. 200W at 4.000min-1
- impeller, outer diameter: 50mm

- blade length: 5mm


- power consumption: 1,02kW
- max. flow rate: approx. 350L/min

- max. head: 14m

Measuring orifice
- diameter: 44mm

- differential pressure sensor: 0...0,1bar


Measuring ranges

- flow rate: 500L/min

- pressure (delivery side): 0...5bar

- torque: 0...2Nm


Dimensions and Weight
LxWxH: 1.200x800x950mm
approx. 135kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 trainer

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

Order Details

070.28700  HM 287  Experiments with an Axial


© 2005 G.U.N.T. Gerätebau GmbH