Current research projects

Image Innovative small helium liquefier
Image Electrical components in refrigeration circuits
Image IO-Scan - Integral measuring optical scanning method
Image Testing of mobile leak detectors according to DIN EN 14624
Image Intelligent innovative power supply for superconducting coils
Image Calibration leak for the water bath leak test
Image Tensile and compression testing
Image Modular storage system for solar cooling
Image Pulse-Tube-Refrigerator with sealed compressor
Image Low Temperature Tribology
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Investigation of material-dependent parameters
Image Thermostatic Expansion Valves
Image Reducing the filling quantity
Image Tribological investigations of oil-refrigerant-material-systems
Image Preformance measurements of heat exchangers

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Low temperature – test facilities

Industry and research instituts

Gunar Schroeder

+49-351-4081-5129

thermal cycling tests at very low temperatures

Parts and components of machines such as satellites or space telescopes are subject to mechanical stress. In addition to the mechanical stress, the temperatures at which these components are used also have an influence on their strength and thus also on their lifetime. In the area of materials research, material aging and especially for space applications with the very high temperature changes that occur in a vacuum, temperature change tests are essential. These tests normally are combined with subsequent strength testing. With the knowledge gained, e.g. how the component strength changes due to extreme temperature changes, the components can be optimally designed with regard to the special requirements for reliability and minimum weight.

A test chamber has been build up at the ILK Dresden specifically for such temperature change tests. With the help of this thermal cycling chamber, parts or components can be exposed to changing temperatures for different durations. The temperatures can be specified in the range of 20 – 363 K for defined time intervals. The temperature gradients, performing the change from the lowest temperature to the highest temperature or reverse can also be specified in a range. Using a programmable electronic control, temperature profiles can be defined and run through in automated test operation over several hours to several days.

Sample limits Parameter
Temperature range 20 K ... 363 K / -253°C ... +90°C / -423°F ... 194°F
Temperature stability ± 1 K
Dimension, length x width 0,95 m x 0,6 m / 3 ft x 2 ft
Mass up to 30 kg / 66 lb

 


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Further Projects - Measurements and Tests

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Investigation of materials

Investigations regarding the compatibility of materials with refrigerants, oils and heat transfer fluids

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Non- invasive flow measurements

PDPA - flow fields and particle sizes

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Laseroptical measurement

PIV and LDA / PDA