Conveners
C1Po1A - Cryogenic Rotating Machinery
- Weibo Chen (Jet Propulsion Laboratory)
- Philipp Arnold (European Spallation Source ESS AB)
Description
https://whova.com/portal/webapp/cecic_202107/Artifact
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Prof. Jihao Wu (1.Technical Institute of Physics and Chemistry Chinese Academy of Sciences. 2.University of Chinese Academy of Sciences)22/07/2019, 09:00Poster Presentation
A cryogenic expander for hydrogen liquefier with active magnetic bearings and an eddy current brake was designed and will be made and tested. The shaft design and strength review is very important factors for the turbine since it affects the performance and safety of the expander significantly. In order to product lower temperature hydrogen, the liquefier needs a very small and high-speed...
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Changlei Ke22/07/2019, 09:00Poster Presentation
The numerical simulation included solid blades with four different leading-edge thicknesses and four different leading-edge geometries. One of the geometries was square, one was ellipse a(ellipse ratio is 1), one was ellipse b(ellipse ratio is 2), and the other was ellipse c(ellipse ratio is 3). The four thicknesses were 0.7mm, 0.6mm, 0.5mm, 0.4mm. The results show increased efficiency loss...
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Dr Kongrong Li (Technical Institute of Physics and Chemistry)22/07/2019, 09:00Poster Presentation
Cryogenic helium turbine expander is a core component of large helium refrigerators and liquefiers. Two-stage cryogenic helium turbine expanders are designed for 250W@4.5K helium refrigerator. One-dimensional design have been done based on the parameters calculated by the process. According to the geometric parameters calculated by the one-dimensional design, a new modeling method is adopted...
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Dr Xiaohua Zhang22/07/2019, 09:00Poster Presentation
Absrtact: The influence of the number of grooves, the spiral angle, the groove depth, the ratio of length and width of spiral-groove thrust bearing on bearing capacity is analyzed by using fluent fluid computing software, and the influence of two new parameters---slope angle and internal spiral line---on load capacity of spiral-groove thrust bearing is also simulated, the parameters of spiral...
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Steffen Kloeppel (TU Dresden)22/07/2019, 09:00Poster Presentation
Most laboratory scale helium plants use pressurization of the storage Dewar to achieve the subsequent transfer of the liquefied helium. The unavoidable throttling in the transfer line in combination with cold gas displacement leads to high flash gas losses of up to 30 % of the transferred helium. Furthermore, filling rates are limited. A transfer pump in combination with a double-flow transfer...
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Mr Kota Yamaguchi (Tokyo University of Marine Science and Technology)22/07/2019, 09:00Poster Presentation
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...
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22/07/2019, 09:00Poster Presentation