Current research projects

Image Investigation according to DIN EN ISO 14903
Image Investigation of materials
Image Modular storage system for solar cooling
Image Test rigs for refrigeration and heat pump technology
Image Calibration of Low Temperature Sensors
Image Low Temperature Tribology
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Testing of mobile leak detectors according to DIN EN 14624
Image Cool Up
Image ZeroHeatPump
Image Innovative Parahydrogen Generator Based on Magnets
Image Practical training, diploma, master, bachelor
Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Reduction of primary noise sources of fans
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Performance tests of condensing units

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Innovative Manufacturing Technologies for Cryosorption Systems

Euronorm, R&D

Sandra Tippmann

+49-351-4081-5131

Vacuum Pumps for UHV and XHV

A cryosorption system is defined as a vacuum pump that captures gas on cryogenic surfaces (gas-binding vacuum pump). Thus pressures lower than 5-12 mbar are obtainable (realisation of UHV - ultrahigh vacuum and XHV - extremely high vacuum). Cryosorption systems rely on very good heat transfer performance. This is currently being achieved with a complex, cost-intensive and risky manufacturing process. Therefore the aim of this project is to develop a new manufacturing technology that does not have this disadvantage.

 

For this purpose, thermodynamically important variables, such as sorption heat and heat transfer resistance were determined mathematically. A test sample was developed and constructed based on these results.

After completion of the design the test sample will be produced.

In the further course of the R&D project a test stand will be set up on which the test sample can be measured. These measurements will be checked and validated in a CFD simulation. With the help of the CFD model, various simulations for future cryosorption systems can be carried out. For example cooling times for different activated carbon masses or the thermal performance under different conditions for the cooling medium can be determined using this method.

Finally the sample production (functional sample) of a cryosorption system made of stainless steel with a precisely defined heat transfer behaviour takes place. The functional model is measured in relation to the cooling performance and pressure loss of the cooling medium and the results obtained will be included into the creation of a process instruction for manufacturing future cryosorption systems.


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Further Projects

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Reducing the filling quantity

How much refrigerant must be filled?

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Performance tests of condensing units

Does your condensing unit perform well?

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State of system and failure analyses

Cause of the failure unknown?

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Thermostatic Expansion Valves

Does the TXV function correctly?