Contact

Dr. Gunter Gerbeth
Director Institute of Fluid Dynamics
g.gerbethAthzdr.de
Phone: +49 351 260 - 3480, 3484
Fax: +49 351 260 - 3440

Dr. Gerd Mutschke
Institute of Fluid Dynamics
g.mutschkeAthzdr.de
Phone: +49 351 260 - 2480
Fax: +49 351 260 - 12480

Petra Vetter
Secretary Institute of Fluid Dynamics
p.vetterAthzdr.de
Phone: +49 351 260 - 3480
Fax: 13480, 3440

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Experiments

Steam/water experiments in vertical test sections

The electrical steam generator circuit and the test section circuit are used for the realisation of steam/water experiments in the vertical test sections of the test facility.

The circulation pump of the electrical steam generator circuit supports the medium from the separator through the mixer and cooler into the steam generator, in which a maximum of 20 % of the flow rate will be evaporated. The water/steam mixture flows into the separator, which provides the saturated steam for the experiments after the phases' separation. The steam is injected in the lower part of the test sections by means of specific removable heads. The adjustment of the steam mass flow is carried out with two control valves arranged in parallel. The test section pump supports the saturated water from the steam drum into the lower part of the two test sections, which can be blocked separately. The required mass flow of the fluid phase is adjusted with the help of three parallel control valves and a frequency converter at the test section pump.

The measurements are carried out with high temperature wire-mesh sensors, which are installed at the upper end of the test sections.

A full description of the single elements of the electrical steam generator and the test section circuit can be opened by clicking the respective components. The navigation point "facility" provides explanations on the whole test facility.

description of the steam drum description of the vertical test sections description of the test section pump description of the separator description of the electrical steam generator description of the circulation pump description of the feed water pump description of the cooler

Scheme of the test section circuit with the vertical test sections

The following experimental matrixes illustrate three measurement series at pressures of 1.0, 2.0, 4.0 and 6.5 MPa. The dark fields show the points measured in each case. The axes indicate the superficial velocities of the fluid and gas phases. The most important boundary conditions of these experiments are illustrated directly under each series of measurement.

Test section DN 50; series: D10

Experimental matrix test section DN50 D10 inj. head type I p1.0 Experimental matrix test section DN50 D10 inj. head type I p2.0 Experimental matrix test section DN50 D10 inj. head type I p4.0 Experimental matrix test section DN50 D10 inj. head type I p6.5

Boundary conditions:

  • Central steam injection with the injection head type I through 24 orifices with a diameter of 0.8 mm
  • Measurement with one high temperature wire-mesh sensor (16 x 16 electrodes)
  • Distance between the steam injection and the measurement plane of the sensor: 7,909 mm
  • Pressure in the test section: 1.0; 2.0; 4.0; 6.5 MPa
  • Temperature in the test section: 180; 212; 250; 281 °C

Test section DN50; series D11

Experimental matrix test section DN50 run D11 inj. head type K p1.0 Experimental matrix test section DN50 run D11 inj. head type K p2.0 Experimental matrix test section DN50 run D11 inj. head type K p4.0 Experimental matrix test section DN50 run D11 inj. head type K p6.5

Boundary conditions:

  • Central steam injection with the injection head type K through 8 orifices with a diameter of 4 mm
  • Measurement with two high temperature wire-mesh sensors (16 x 16 electrodes)
  • Distance between the steam injection and the measurement plane of the first sensor: 7,909 mm
  • Pressure in the test section: 1.0; 2.0; 4.0; 6.5 MPa
  • Temperature in the test section: 180; 212; 250; 281 °C

Test section DN200; run D14

Measuring matrix test section DN200 run D14 inj. head type I p6.5 obstacle

Boundary conditions:

  • Central steam injection with the injection head type I through 152 orifices with a diameter of 1 mm
  • Measurement with one high temperature wire-mesh sensor (64 x 64 elektrodes)
  • Measurements with a half-moon shaped obstacle: distance to the measurement plane: 10, 15, 20, 40, 80, 160, 250, 520 mm below or above the sensor
  • Distance between the steam injection and the measurement plane of the sensor: obstacle above: 5,110 mm or below: 6,170 mm
  • Pressure in the test section: 6.5 MPa
  • Temperature in the test section: 281 °C