28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

The Cost of Coolers for Cooling Superconducting Devices from 4.2 to 4.7 K, from 20 to 30 K, and from 65 to 80 K

29 Jun 2015, 11:00
15m
Tucson Ballroom E ()

Tucson Ballroom E

Contributed Oral Presentation CEC-03 - Cryocoolers (Non-Aerospace) C1OrA - Cryocoolers for Superconducting Applications

Speaker

Michael Green (Lawrence Berkeley Laboratory)

Description

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 power equipment that use MgB2 conductors and HTS conductors have spurred the development of coolers that work well temperature ranges from 20 K to 30 K (for potential hydrogen temperature applications) and from 65 K to 80 K (for applications in the liquid nitrogen temperature range). This paper will present some cost data for a number of commercial two-stage and single-stage coolers. This data will be fitted to allow one to estimate the cost of coolers as a function of refrigeration for the three temperature ranges given above. The efficiency of several coolers over a range of temperatures will be discussed.

Primary author

Michael Green (Lawrence Berkeley Laboratory)

Presentation Materials