Conveners
C1OrA - Cryocoolers for Superconducting Applications
- Jonathan Demko (LeTourneau University)
- William Hassenzahl (AEA)
Michael Green
(Lawrence Berkeley Laboratory)
6/29/15, 11:00 AM
CEC-03 - Cryocoolers (Non-Aerospace)
Contributed Oral Presentation
This author and other authors have written papers concerning the cost of refrigeration at liquid helium temperature and higher temperature as a function of the refrigeration delivered. These papers have included small coolers as well. The lowest temperature range from 4.2 K to 4.7 K (the liquid helium temperature range) is covered using coolers that have two stages. The use of magnets and...
Michael Green
(Michigan State University)
6/29/15, 11:15 AM
CEC-03 - Cryocoolers (Non-Aerospace)
Contributed Oral Presentation
The amount of cooling delivered to the second stage of a two stage cooler is dependent on the second stage temperature and the amount of refrigeration provided by the cooler first stage. The second stage cooling as a function of temperature for a Cryomech PT415 cooler (1.5 W at 4.2 K with 42 W on the first stage) has been estimated by scaling similar data that was measured for a Cryomech...
Nakano Kyousuke
(Sumitomo Heavy Industries, Ltd.)
6/29/15, 11:30 AM
CEC-03 - Cryocoolers (Non-Aerospace)
Contributed Oral Presentation
For the wide spread of high-temperature superconductor (HTS) devices, a cryocooler having COP of >0.1, compact size, light-weight, high efficiency and high reliability is required. For practical use of superconductive devices, especially HTS motor used for electric vehicle. We developed a high efficiency Stirling pulse-tube cryocooler (STP). STP has high reliability and low vibration. However...
Mr
Jun Watanabe
(Kyoto University)
6/29/15, 11:45 AM
CEC-03 - Cryocoolers (Non-Aerospace)
Contributed Oral Presentation
In this paper, we try to develop highly efficient Stirling-type cryocooler for the next generation drive motor. Target motor is a High Temperature Superconducting Induction/Synchronous Motor (HTS-ISM). Although basic structure of HTS-ISM is almost the same as that of the conventional squirrel-cage induction motor, it can rotate at synchronous speed by use of the superconducting rotor windings....