Aktuelle Forschungsprojekte

Image Investigation of materials
Image Low temperature – test facilities
Image Software modules
Image Filter Tests
Image Thermal engines
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Reduction of primary noise sources of fans
Image Investigation of material-dependent parameters
Image Corrosion inhibitor for ammonia absorption systems
Image Modular storage system for solar cooling
Image Refrigerants, lubricants and mixtures
Image Behavior of multiphase cryogenic fluids
Image Humidifier System for High-Purity Gases
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image State of system and failure analyses
Image Innovative Manufacturing Technologies for Cryosorption Systems

You are here:  Home /  Measurements and Tests


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

Investigation of material-dependent parameters

Investigation of the permeation behavior

Image

Low temperature – test facilities

thermal cycling tests at very low temperatures

Image

Investigation according to DIN EN ISO 14903

These tests according to DIN EN ISO 14903 are possible at ILK Dresden