Current research projects

Image Refrigerants, lubricants and mixtures
Image Investigation according to DIN EN ISO 14903
Image Ionocaloric cooling
Image Modular storage system for solar cooling
Image Influenced melting point of water by magnetic field
Image Software modules
Image Low noise and non metallic liquid-helium cryostat
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Performance tests of refrigerant compressors
Image Low temperature – test facilities
Image Breakthrough Sensor for Adsorption Filters (BelA)
Image State of system and failure analyses
Image Swirl-free on the move...
Image Thermal engines
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr

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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