At the IEPC -2011 conference held in Wiesbaden Germany last week, Dr. Kieckhafer (postdoctoral research associate at the Georgia Institute of Technology Georgia, USA), presented a paper by the title: Recirculation Liquid Nitrogen Systems for Operation of Cryogenic Pumps. His conclusion is that Georgia Tech not only benefits from independency of standard liquid nitrogen supplies but also from a significantly more cost effective operation of the test facility. The system will give a ROI in approximately 6,900 running hours.

In his paper Dr. Kieckhafer shows a recent survey of their closed loop cryogenic cooling system custom designed by Stirling Cryogenics in the Netherlands and clearly indicates the benefits Georgia Tech University is already experiencing from using this system for the cryopump baffles in his vacuum chamber test facility.

Download Dr. Kieckhafer's paper: Recirculation Liquid Nitrogen Systems for Operation of Cryogenic Pumps

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