Aktuelle Forschungsprojekte

Image Measurements on ceiling mounted cooling systems
Image State of system and failure analyses
Image Thermostatic Expansion Valves
Image Low Temperature Measuring Service
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Service offer for Leak Detection and Tightness Test
Image High temperature heat pump
Image Innovative Manufacturing Technologies for Cryosorption Systems
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Corrosion inhibitor for ammonia absorption systems
Image Intelligent innovative power supply for superconducting coils
Image Refrigerants, lubricants and mixtures
Image Innovative Parahydrogen Generator Based on Magnets
Image Software for test rigs
Image Air-flow test rig for fan characteristic measurement
Image Innovative small helium liquefier

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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

Image

Corrosion inhibitor for ammonia absorption systems

An alternative to chromium(VI) compounds

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Brine (water)-water heat pump

Test according DIN EN 14511 and 14825

Image

Air-water heat pumps

Test according DIN EN 14511 and 14825

Image

Electrochemical decontamination of electrically conducting surfaces „EDeKo II“

Improvement of sanitary prevention by electrochemical decontamination


Contact

Institut für Luft- und Kältetechnik - Gemeinnützige Gesellschaft mbH
Bertolt-Brecht-Allee 20, 01309 Dresden


Reception ILK Dresden

+49-351-4081-5000

+49-351-4081-5099

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