Current research projects

Image Software for technical building equipment
Image Tribological investigations of oil-refrigerant-material-systems
Image IO-Scan - Integral measuring optical scanning method
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Software for test rigs
Image Software modules
Image Heat2Power
Image Micro fluidic expansion valve
Image Testing of mobile leak detectors according to DIN EN 14624
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Investigation of materials
Image Behavior of multiphase cryogenic fluids
Image Air-water heat pumps
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Refrigerants, lubricants and mixtures
Image Lifetime prediction of hermetic compressor systems

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Thermostatic Expansion Valves

Industry

Dr.-Ing. Matthias Böhm

+49-351-4081-5211

Does the TXV function correctly?

We support the industry in the development of energy-efficient vapor-compression refrigeration system and compression heat pumps.

The ILK Dresden offers the following services for you:

The ILK Dresden have been active in the field of performance testing of refrigeration compressors and condensing units for over 20 years.

Our offer includes also the investigation of thermostatic expansion valves (TEV) with external temperature sensors.

The tests of the TEV are carried out on a suitable refrigeration cycles (fig. 2), taking into account the following standards

  • AHRI 750 (2007),
  • ANSI/ ASHRAE 17 (2008, fig. 1) and
  • ASERCOM-Statement (9_GER_Dimensionierung_von_TXV_2011)

Current calibrations of the measuring systems are a matter of course.

The test can be carried out with the refrigerants R134a, R404A, R407A, R407C, R407F, R448A, R513A, R452A up to a mass flow of 400 kg/h (~20 kW for R134a).

Additional offerings

The following influences on the valve behaviour can be investigated

  • run-in period
  • hysteresis
  • transient tests / time constant
  • pressure losses
  • sub cooling
  • ambient temperature
  • critical pressure ratio

Your Request

Further Projects

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Thermal engines

Power Generation from Waste Heat

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Helium extraction from natural gas

Innovative solutions for helium extraction

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Ice Slurry Generation

Using Direct Evaporation

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Pulse-Tube-Refrigerator with sealed compressor

for mobil use in the hydrogen technology

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Low Temperature Measuring Service

Measurement of Thermal Properties at Low Temperatures