Institut für Energietechnik und Thermodynamik
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Test rig for valves

It is possible to test valves and fittings from DN 65 up to DN 200. We mostly have been using valves of 150 mm nominal diameter. This size allows a mean velocity of a little bit more than 10 m/s, which means a Reynolds-number of 1,5.106.

To produce the required hydraulic energy the following pumps are available:

  • 1 pump (QN = 0,17 m3/s, HN = 85 m, PN = 180 kW) powered by a speed regulated DC-motor
  • 1 pumpe (QN = 0,5 m3/s, HN = 36 m, PN = 210 kW) powered by a speed regulated DC-motor
  • 2 high pressure pumps (QN = 0,038 m3/s, HN = 76 m, PN = 40 kW) powered by a speed regulated DC-motor

In addition it is possible to test pumps in the laboratory independent of these test rigs up to an electrical input of 20 kW. A frequency controller makes possible the variation of the pump speed. There is a special pump test rig for the education of the students too.

In proportion a cheap method to learn more about the downstream velocity distribution of valves, fittings or other components of hydraulic systems is the investigation of the velocities point by point in an air channel:

Air channel

The radial compressor is able to supply a maximum discharge up to 4 m3/s (Pel = 10 kW). A frequency controller makes possible the variation of the compressor speed. The variable structure of the air channel makes possible a quick adaptation to special needs.

BioGT: Directly Biomass-Fired Gas Turbine

Low power range gas turbine cogeneration plant with directly fired biomass combustion chamber.

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