Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Behavior of multiphase cryogenic fluids
Image Solar Cooling
Image Performance tests of condensing units
Image Measurements on ceiling mounted cooling systems
Image Pulse-Tube-Refrigerator with sealed compressor
Image Innovative small helium liquefier
Image Leak Detection and Tightness Test
Image Certifiable connection types in cryogenics
Image Low noise and non metallic liquid-helium cryostat
Image Preformance measurements of heat exchangers
Image Range of services laboratory analyses
Image Humidifier System for High-Purity Gases
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Low Temperature Measuring Service
Image Calibration of Low Temperature Sensors

You are here:   /  Home


Thermostatic Expansion Valves

Industry

Dr.-Ing. Matthias Böhm

+49-351-4081-643

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


Contact

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


Secretary to the Management

+49-351-4081-520

+49-351-4081-525

Image ISO 9001
Bild Zuse Mitglied Bild SIG