Current research projects

Image Verification of storage suitability of cryo tubes
Image Calibration of Low Temperature Sensors
Image High Capacity Pulse Tube Cooler
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Investigation of materials
Image Brine (water)-water heat pump
Image Performance tests of refrigerant compressors
Image Swirl-free on the move...
Image Multifunctional electronic modules for cryogenic applications
Image Practical training, diploma, master, bachelor
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Measurement of insulated packaging
Image Service offer for Leak Detection and Tightness Test
Image Thermostatic Expansion Valves
Image IO-Scan - Integral measuring optical scanning method
Image Development of test methods and test rigs for stationary integrated refrigeration units

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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 - Research and Development