Aktuelle Forschungsprojekte

Image Investigation of coolants
Image Heat2Power
Image Reducing the filling quantity
Image Ice Slurry Generation
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Helium extraction from natural gas
Image Calibration of Low Temperature Sensors
Image Software modules
Image Performance tests of condensing units
Image Testing of mobile leak detectors according to DIN EN 14624
Image Air-water heat pumps
Image Verification of storage suitability of cryo tubes
Image Energy efficiency consulting - cogeneration systems
Image Humidifier System for High-Purity Gases
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Micro heat exchangers in refrigeration

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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

Image

Corrosion inhibitor for ammonia absorption systems

An alternative to chromium(VI) compounds

Image

Development of a Cryogenic Magnetic Air Separation Unit

Oxygen Enrichment by Applied Cryogenic Magnetohydrodynamics

Image

Software for test rigs

Individual software for complex tests and evaluation

Image

Brine (water)-water heat pump

Test according DIN EN 14511 and 14825

Image

High temperature heat pump

Using waste heat from industrial processes


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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