The Test center PWLP supports the industry in the development of environmentally friendly, energy-efficient vapor-compression refrigeration system and compression heat pumps. In practice, the F-Gas Regulation EU 517/2014 means the increased use of flammable refrigerants (KM) of classes A2 and A3.

The ILK Dresden offers the following services for you:

Investigation of compressor parameters

For a defined application map of open, semi-hermetic or hermetic respectively one or two stage refrigerant compressors we determine the refrigerating capacity, power absorbed, COP, volumetric and isentropic efficiency.

For a defined application map, we determine according to the standards
DIN EN 13771-1 and DIN EN 12900 the

Cooling capacity, drive power, COP, delivery and quality level

Now also for flammable refrigerants like propane!

We determine the parameters for

• one- or two-stage (with integrated ECONOMISER),
• semi-hermetic or
• hermetic compressors
• types: reciprocating or rolling piston, scroll compressors

The ASEREP property library from ASERCOM is the source of the refrigerant property values

Current calibrations of the measuring systems are a matter of course.
Within the scope of our flexible accreditation, further measuring tasks can be realized according to applicable test standards.

Compressor service life study

We test the thermal / mechanical long-term behavior and the interaction between compressor, refrigerant (A1, A2 / L and A3) and oil

in the LifeTimeTest LTT500

• according to the individual requirement of the customer or
• according to our ILK standard procedure over approx. 500 h:
  
  • with defined variable loads in the compressors operating map (stress level 1… 6)
  • when the permissible operating parameters are exceeded (on / off cycles, reduced overheating, oscillation, liquid) and with analysis of the development over time of the compressor parameters at the reference point (according to DIN EN 13771-1).

Examination of the compressor and oil condition

We check in a condition analysis of the compressor

• possible damage from field use or after completing a LifeTimeTest LTT500
• based on macroscopic mechanical wear characteristics, electrical properties of the electric motor and oil condition
• optionally with technical evaluation of the compressor according to Guideline VDI 2225 (objectification of characteristics without directly measurable comparison parameters).