Current research projects

Image Lifetime prediction of hermetic compressor systems
Image Mass Spectrometer
Image Testing of mobile leak detectors according to DIN EN 14624
Image Certifiable connection types in cryogenics
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Ice Slurry Generation
Image Software modules
Image Investigation of material-dependent parameters
Image Measurements on ceiling mounted cooling systems
Image Thermostatic Expansion Valves
Image Range of services laboratory analyses
Image Calibration of Low Temperature Sensors
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image IO-Scan - Integral measuring optical scanning method
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)

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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 - Measurements and Tests

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Laseroptical measurement

PIV and LDA / PDA

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Performance tests of condensing units

Does your condensing unit perform well?

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State of system and failure analyses

Cause of the failure unknown?

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Testzentrum PLWP at ILK Dresden

Test Fluid-Energy Machines and Components