Current research projects

Image Heat2Power
Image Range of services laboratory analyses
Image Air-flow test rig for fan characteristic measurement
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Tensile and compression testing
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Filter Tests
Image Investigation of material-dependent parameters
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Testing of mobile leak detectors according to DIN EN 14624
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Thermostatic Expansion Valves
Image Ice Slurry Generation
Image State of system and failure analyses
Image Modular storage system for solar cooling
Image Service offer for Leak Detection and Tightness Test

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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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ZeroHeatPump

Performance management of small heat pumps without energy consumption

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Mass Spectrometer

Determining the composition of gas mixtures in the high or ultra-high vacuum range

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Tensile and compression testing

Determination of yield strength, tensile strength and elongation at break

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Investigation of material-dependent parameters

Investigation of the permeation behavior