Aktuelle Forschungsprojekte

Image Performance tests of refrigerant compressors
Image Software for technical building equipment
Image Micro heat exchangers in refrigeration
Image Service offer for Leak Detection and Tightness Test
Image Calibration of Low Temperature Sensors
Image Influenced melting point of water by magnetic field
Image Measurement of insulated packaging
Image IN-SITU SWELLING BEHAVIOUR OF POLYMER MATERIALS IN FLAMMABLE FLUIDS
Image Range of services laboratory analyses
Image Intelligent innovative power supply for superconducting coils
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Micro fluidic expansion valve
Image High Capacity Pulse Tube Cooler
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Electrical components in refrigeration circuits

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Low Temperature Measuring Service

Industry and R&D

Dr. rer. nat. Matthias Schneider

+49-351-4081-5126

Measurement of Thermal Properties at Low Temperatures

The cool down to cryogenic temperature causes thermal stress within the structure of components or complete devices. Furthermore thermal material properties could change crucial.

Samples can be proved down to 10 K via temperature cycling tests and/or measurements of the thermal conductivity, the coefficient of thermal expansion (also as integral for large sample dimensions) and the heat capacity. An experimental station with optimised conditions for measuring the thermal conductivity of different materials is under construction.

Thermal Tests (Cycling)

IndicatorMinimalMaximal
Cool down rate25 K/h200 K/min
Cool down cycles1Customer preference
Measuring accuracy1 %5 %
 Temperature range80 K (5 K)450 K
Sample preparationCustomer material
Sample dimensionup toØ 400 mm x 550 mm
other  dimenions on request

Thermal Conductivity

IndicatorMinimalMaximal
Measuring range10-2 W/(m K)103 W/(m K)
Measuring accuracy1 %5 %
 Temperature range10 K350 K
Sample preparationCustomer material
Sample dimensionup toØ 60 mm x 20 mm
other  dimenions on request

Heat Capacity

IndicatorMinimalMaximal
Measuring range10 J/(kg K)10 J/(kg K)
Measuring accuracy1 %5 %
Temperature range10 K350 K
Sample preparationCustomer material
Sample dimensionup to150 x 150 x 150 mm3
other  dimenions on request

Coefficient of Thermal Expansion

IndicatorMinimalMaximal
Measuring range10-6 K-110-4 K-1
Measuring accuracy0.1 %5 %
Temperature range10 K350 K
Sample preparationCustomer material
Sample dimensionup to200 x 200 x 200 mm3
other  dimenions on request

Your Request

Further Projects - Research and Development

Image

Refrigerants, lubricants and mixtures

Determination of working fluid properties

Image

Reduction of primary noise sources of fans

...using numerical and experimental methods with contra-rotating axial fan

Image

Micro fluidic expansion valve

for increasing of the efficiency of small and compact cooling units

Image

Hydrogen and methane testing field at the ILK

Simultaneously pressures up to 1,000 bar, temperatures down to –253°C

Image

Low noise and non metallic liquid-helium cryostat

Low-noise Magnetic Field Cryostat for SQUID-Applications