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ET 813 Two-Cylinder Steam Engine
Education / GUNT Hamburg / Thermal Engineering and HVAC / Power Engines and Machines /

The ET 813 forms a complete steam power plant with the matched steam generator ET 813.01 and the HM 365 Universal Drive and Brake Unit.

  Heat energy is initially converted into mechanical energy and then into electrical energy by the HM 365 operating as a dynamometer. The trainer ET 813 contains a steam engine, a condenser and a condenser tank together with comprehensive instrumentation. The steam engine is an enclosed two-cylinder machine with 180° crank offset. It is of single action with plunger pistons. The condensate tank is designed as a cascaded tank and separates oil from the steam engine. The clean condensate is pumped back to the feed water tank of the steam generator.
  The measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included.


Learning Objectives / Experiments

- Determination of the energy consumption 
- Determination of the amount of steam generated
- Determination of mechanical power
- Calculation of overall efficiency
- Determination of heat transfer in the condenser
- Recording of a vapour pressure curve
- Effective output power
- Specific steam consumption of the steam engine
- Thermal power output of the boiler
- Energy gradient across the steam engine


[1] Two-cylinder steam engine, to be used with HM 365 and ET 813.01
[2] Atmospheric condenser
[3] Condensate tank and condensate pump; condensate tank in designed as cascaded tank
[4] Measurement of temperature, pressure, flow rate, and speed
[5] Determination of steam amount via condensate
[6] Engine load via HM 365
[7] Steam supply via ET 813.01
[8] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data

Single-action steam engine

- speed: max. 1000rpm

- max. continuous rating: 500W

- cylinder

  bore: 50mm

  stroke: 40mm
- max. steam consumption: 30kg/h saturated steam,


- capacity: 22kW

- transfer area: 3800cm²

- cooling water consumption: 1000L/h
Condensate pump

- power consumption: 30-45-60W

- max. flow rate: 2.9m³/h

- max. head: 4m
Measuring ranges

- temperature: 7x 0...400°C

- pressure: 0...10bar / 0...1.5bar

- speed: 0...1200rpm

- cooling water flow rate: 100...1000L/h


Dimensions and Weight
l x w x h: 950 x 800 x 1760 mm
Weight: approx. 150 kg
Required for Operation
Cold water connection ½” hose, power supply via HM 365, steam via ET 813.01
Scope of Delivery

1 trainer

3 graduated beakers

1 stop watch

1 LabVIEW software CD + USB cable
1 manual

Order Details

061.81300  ET 813  Two-Cylinder Steam Engine