Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5444155 | Cryogenics | 2017 | 37 Pages |
Abstract
We describe the development and experimental results of a proof of concept Superfluid Magnetic Pump in this work. This novel low temperature, no moving part pump can replace the existing bellows-piston driven 4He or 3He-4He mixture compressor/circulators used in various sub Kelvin refrigeration systems such as dilution, Superfluid pulse tube, Stirling, or active magnetic regenerative refrigerators. Due to the superior thermal transport properties of sub-Lambda 4He this pump can also be used as a simple circulator to distribute cooling over large surface areas. Our pump was experimentally shown to produce a maximum flow rate of 440Â mg/s (averaged over cycle), 665Â mg/s (peak) and produced a maximum pressure difference of 2323Â Pa using only the more common isotope of helium, 4He. This pump worked in an “ideal” thermodynamic state: The experimental results matched with the theoretical values predicted by a computer model. Pump curves were developed to map the performance of this pump. This successful demonstration will enable this novel pump to be implemented in suitable sub Kelvin refrigeration systems.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Amir E. Jahromi, Franklin K. Miller,