Efficiency of helium expansion turbines (for MRI refrigerator-liquifier) Heat flows analysis Measurement of turbine shaft heat conductivity

   A NEW CONSTRUCTION OF ROTOR OF HELIUM EXPANSION TURBINE 
Jan Dupak¹, Pavel Hanzelka¹, Petr Michalicka², Ludek Tucek³, Vladimir Ustohal⁴

   ¹ Institute of Scientific Instruments of the AVCR,               ² Institute of Physics of Materials of the ASCR
³ The First Brno Machine Works in Velka Bites, a.s.          ⁴ Technical University Brno, Faculty of Electrical Engineering, Brno

^{Proceedings of 7th Cryogenics IIR international conference. Praha 23.-26.04.2002: ICARIS, 2002. s. 29 - 32. ISSN 0151-1637.}