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Products  |  Thermal Engineering and HVAC  |  Power Engines and Machines  |  ET 792
ET 792 Gas Turbine Show data sheet (pdf file) Print page
Technical Description

The trainer ET 792 investigates the behaviour of a system in a two-shaft arrangement (vehicle drive, ship's propulsion or generator drive) and of a jet engine (aircraft's propulsion).
  At the core of the trainer are a so-called gas generator and a free-running power turbine. The gas generator consists of a radial compressor, a combustion chamber and a radial turbine. The compressor and turbine are mounted on a shaft.
  Depending on the arrangement, the energy of the exhaust gas stream is either converted into mechanical energy in the free-running power turbine or accelerated and transformed into thrust via a nozzle. It is possible to convert from a single-shaft to a two-shaft arrangement in just a few actions.
  The gas turbine works as an open cyclic process, with the ambient air being drawn out and fed back in. Intake and exhaust silencers reduce the noise in operation of the power turbine. The use of propane as the combustion gas ensures clean, odourless operation. A start-up fan is used to start the gas turbine.
  Relevant measuring values are recorded by sensors and indicated on the display and control panel. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included. 
  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments
- Familiarisation with the function and typical 
  behaviour during operation of a gas turbine
- Operation as jet engine
- Operation as power turbine
- Determining effective power
- Thrust measurement
- Determining specific fuel consumption
- Recording the characteristic of the power turbine
- Determining the system efficiency 
* Operation with power turbine or as jet engine with
  propelling nozzle1
* Simple model of a gas turbine1
* Display and control panel with illustrative process
* Propane gas as fuel1
Alternative products
ET 794 -- Gas Turbine with Power Turbine
ET 795 -- Simulation of a Gas Turbine
ET 796 -- Gas Turbine Jet Engine

[1] Function and behaviour during operation of a gas turbine
[2] Single-shaft arrangement for operation as jet engine
[3] Two-shaft arrangement for operation with power turbine
[4] Start-up fan to start the gas turbine
[5] Asynchronous motor with frequency converter as generator
[6] Conversion of generated electrical energy into heat using four 600W braking resistors
[7] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data

Gas generator (compressor and turbine)
- speed range: 60,000...125,000rpm
- max. pressure ratio: 2:2
- max. fuel consumption: 120g/min
- fuel nozzle pressure: 2.5...4bar
Power turbine
- speed range: 10,000...40,000rpm
- mechanical power: 0...2kW
- electrical power: 0...1.5kW
- sound level at 1m distance: max. 80dB(A)
Operation as jet engine
- thrust measurement: 0...50N
- sound level at 1m distance: max. 110dB(A)
Measuring ranges
- temperature: 6x -200...1000C / 1x -40...1300C 
- speed: 0...199.999rpm
- electrical power: 0...1999W
- air inlet mass flow rate: 0...200L/s
- fuel mass flow rate: 0...10kg/h
- fuel supply pressure: 0...25bar
- fuel nozzle pressure: 0...4bar
- combustion chamber pressure loss: 0...50mbar
- turbine pressure inlet in gas generator: 0...2.5bar
- power turbine pressure inlet: 0...250mbar


Dimensions and Weight
l x w x h: 1500 x 680 x 1820 mm
Weight: approx. 325 kg
Required for Operation
400V, 50/60Hz, 3 phase or 230V, 60Hz/CSA, 3 phase
Cooling water 200L/h, propane gas 4...15bar
Ventilation 500m/h, exhaust gas routing required
Scope of Delivery

1 trainer

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

Order Details
061.79200  ET 792  Gas Turbine
© 2005 G.U.N.T. Gerätebau GmbH