Aktuelle Forschungsprojekte

Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Thermostatic Expansion Valves
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Verification of storage suitability of cryo tubes
Image Panel with indirect evaporative cooling via membrane
Image Micro heat exchangers in refrigeration
Image Investigation of coolants
Image Helium extraction from natural gas
Image OVERALL SYSTEM OPTIMIZATION OF REFRIGERATION PLANT SYSTEMS FOR ENERGY TRANSITION AND CLIMATE PROTECTION
Image Tribological investigations of oil-refrigerant-material-systems
Image Brine (water)-water heat pump
Image Test rigs for refrigeration and heat pump technology
Image Low Temperature Measuring Service
Image Software modules
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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