21-25 July 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C1Po1A-09 [17]: Development of a cryo-rotary joint for thermosyphon cooling system up to 1000 rpm

22 Jul 2019, 09:00
2h
Level 6, Cryo Expo Exhibit Hall ()

Level 6, Cryo Expo Exhibit Hall

Speaker

Mr Kota Yamaguchi (Tokyo University of Marine Science and Technology)

Description

Electric propulsion systems with MW-class output power density are expected to reduce fuel consumption of the current passenger aircrafts. In this scheme, motors and generators should have an output of 4000-30000 hp and capable of high-speed rotation. A high-temperature superconducting motor fitted with an adequate cooling system has the potential to achieve the requested efficiency and high-power density. The cooling system is required to maintain the operating temperature under high-speeds, over 1000 rpm. The cryo-rotary joint is an integral part of the cooling system as it is necessary to provide refrigerant to the evaporator in the rotor. However, the cryo-rotary joint generates heat as a function of rotating speed. The heat is significant at high-speeds and it affects to both efficiency and the cooling system. To solve this problem, we developed the cryo-rotary joint which has a structure to suppress the heat generation. The new cryo-rotary joint was installed for a neon thermosyphon cooling system to evaluate its performance at speeds up to 1000 rpm.

Primary author

Mr Kota Yamaguchi (Tokyo University of Marine Science and Technology)

Co-authors

Dr Motohiro Miki (izumi@kaiyodai.ac.jp) Mr Clement Bocquel (Cosmo Scienece Inc.) Erasmus Shaanika (Tokyo University of Marine Science and Technology) Mitsuru Izumi (Tokyo University of Marine Science and Technology (TUMSAT)) Mr Yoshikazu Ikeda (Cosmo Science Inc.)

Presentation Materials

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