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ET 850 Steam Generator Module
Education / GUNT Hamburg / Thermal Engineering and HVAC / Power Engines and Machines /

The experimental unit is intended for operation together with the steam turbine ET 851, but can also be operated independently. The unit comprises a gas heated boiler with superheater, condenser with evacuation unit, condensate and feed water pump, safety devices and instrumentation including an exhaust gas analyser. The once-through boiler system delivers steam after a few minutes, max. 8kg/h at 10bar and 225°C.

  The cyclic process is easy to follow and understand as all components are clearly arranged on the front panel. 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. It is also possible to prepare charts or graphs from measurements with the supplied software.

  The steam generator is designed in accordance with the German "Technische Regeln Dampf" (TRD) (Technical Regulations for Steam). It is pressure tested and has all the stipulated safety fittings.


Learning Objectives / Experiments

- Efficiency of a steam generator
- Effect of the air feed on the exhaust gas, burner

- Energy balances
- Determining the temperature and pressure of

  saturated steam
- Determination of steam enthalpy 
- Determination of the heat transfer coefficient
- Analysis of the steam state in the h-s diagram


[1] Experimental unit with a gas fired steam generator for wet or superheated steam, a condenser with air ejector and closed feed water circuit
[2] Once-through steam boiler, stainless steel 
[3] Ceramic burner 
[4] Condenser: thick-walled glass cylinder with water-cooled coil for continuous operation of steam generator; water jet pump to evacuate air
[5] Feed water system with 2 pumps
[6] Measurement of temperature, pressure, flow rate
[7] Exhaust gas analyser
[8] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista  


Technical Data


- heating capacity: 8kW

- fuel consumption: 0,7kg/h

- nominal pressure: 10bar

- steam capacity: 8kg/h

- steam temperature: 225°C
Measuring ranges

- temperature: 6x 0...400°C

- pressure: 0...1,6bar / 10...16bar

- power (overheater): 750W

- flow rate

  gas: 0...14L/min

  cooling water: 0...720L/h

  feed water: 0...11,8L/h


Dimensions and Weight
LxWxH: 1830x790x1770mm (without chimney)
Weight: approx. 255kg
Required for Operation

230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase

Gas supply: propane or natural gas 1.5kg/h, 50mbar
Cooling water: 300L/h, water jet pump: 720L/h

Scope of Delivery

1 experimental unit, completely assembled and

   ready for use

1 LabVIEW software CD + USB cable

1 exhaust gas analyser

20L distilled water

50g trisodium phosphate 20%

1 narrow necked bottle

1 funnel

1 set of tools

1 manual

Order Details
061.85000  ET 850  Steam Generator Module