Image Hydrogen and methane testing field at the ILK
Image Verification of storage suitability of cryo tubes
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Software for test rigs
Image Cold meter
Image Influenced melting point of water by magnetic field
Image Software for technical building equipment
Image Air-flow test rig for fan characteristic measurement
Image 3D - Air flow sensor
Image Optimizing HVAC operation with machine learning
Image Laseroptical measurement
Image High temperature heat pump
Image Refrigerants, lubricants and mixtures
Image Computational fluid dynamics CFD
Image Certifiable connection types in cryogenics
Image Test procedures for electrical components

You are here:  Home /  Measurements and Tests


Development of test methods and test rigs for stationary integrated refrigeration units

BMWi Euronorm Innokom

02/2017 – 07/2019

Andreas Peusch

+49-351-4081-639

How efficient is my refrigeration unit?

The objective of the R&D project was the development of a test method for stationary integrated refrigeration units. The test method comprises different device variants, like ceiling mounted, wall mounted or split refrigeration units. The method provides reliable performance data and thus enables a manufacturer-independent efficiency comparison.

Measurements in the 3- or 4-chamber measuring set-up were carried out using the calorimeter method with compensation of the ambient conditions. This enabled the measurements of devices with low cooling capacity (0.5 - 4 kW).

In the selected test set-up (Figure 1), the cooling capacity is measured indirectly via the electrical power of the compensation heating. To determine the total cooling capacity, the heat input into the calorimeter room and, if necessary, internal loads (sensible and latent heat) must be added together.

The test method comprises following features:

  • suitable for low temperature devices (-20°C) and normal temperature cooling
  • measurement in calorimeter room (3- or 4-chamber concept)
  • determination of heat input via enclosing surfaces before power measurement
  • establishiment of equilibrium states of the temperatures to be set (takes up to 24h)
  • measurement period up to 6h at a tolerance band of 0,2K

Conclusion:

  • results are implemented into the new test norm prEN 17432
  • establishment of an uniform Europe-wide comparison criterion
  • performance and efficiency data on a uniform basis leads to higher confidence and thus also to lower consumption costs

Your Request

Further Projects - Measurements and Tests

Image

Measurement of insulated packaging

How efficient is my cool box?

Image

Cold meter

The fast way to refrigerating capacity

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?


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