Image Cryostats, Non-Metallic and Metallic
Image Influenced melting point of water by magnetic field
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Helium extraction from natural gas
Image Optimizing HVAC operation with machine learning
Image Reducing the filling quantity
Image Innovative Manufacturing Technologies for Cryosorption Systems
Image Heat2Power
Image Combined building and system simulation
Image High temperature heat pump
Image Behavior of multiphase cryogenic fluids
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Investigation of coolants
Image Swirl-free on the move...
Image Intelligent innovative power supply for superconducting coils
Image Measurements on ceiling mounted cooling systems

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

Hydrogen and methane testing field at the ILK

Simultaneously pressures up to 1,000 bar, temperatures down to -263°C

Image

Calibration of Low Temperature Sensors

According to the comparative measurement method

Image

Low Temperature Measuring Service

Measurement of Thermal Properties at Low Temperatures

Image

Test procedures for electrical components

Insulating properties of hermetic compressors

Image

3D - Air flow sensor

Anemometer for determination of 3d-air flow


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