Current research projects

Image Heat2Power
Image Intelligent innovative power supply for superconducting coils
Image Brine (water)-water heat pump
Image Tensile and compression testing
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Low noise and non metallic liquid-helium cryostat
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Electrical components in refrigeration circuits
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Modular storage system for solar cooling
Image Software for technical building equipment
Image Performance tests of refrigerant compressors
Image Swirl-free on the move...
Image Pulse-Tube-Refrigerator with sealed compressor
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Reducing the filling quantity

You are here:   /  Home


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

Verification of storage suitability of cryo tubes

Artificial aging of primary packaging for biobanking applications

Image

Preformance measurements of heat exchangers

Is the heat exchanger properly sized?

Image

Innovative small helium liquefier

Liquefaction rates from 10 to 15 l/h

Image

Filter Tests

INDUSTRIAL AND LABORATORY PRECIPITATORS