CEC-ICMC 2015 - Timetable, Abstracts and Presentations

330 W Cryocooler Developments and Testing

30 Jun 2015, 11:00

15m

Tucson Ballroom E

Contributed Oral Presentation CEC-03 - Cryocoolers (Non-Aerospace) C2OrB - Large Capacity Coolers

Speaker

Mr Nick Emery (Callaghan Innovation)

Description

Fabrum Solutions in association with Callaghan Innovation and Absolut System has developed a 330 W pulse tube cryocooler based on Callaghan Innovation’s diaphragm pressure wave generators (DPWG). A cost-effective, long life and robust cryocooler has been achieved due to the pulse tube’s lack of moving parts and the DPWG’s metal diaphragms separating the working gas from the oil lubricated drive mechanism. A 330 cc DPWG was designed and manufactured to run with an inline pulse tube. Absolut System carried out the pulse tube design, manufacture by Fabrum Solutions with integration and testing by Callaghan Innovation. Over 400 W of cooling power at 77 K was achieved (target was 330 W at 77 K) from the cryocooler, which is now being run in a commercial application. A sealed condensation chamber was added to the cold-head and connected to a Dewar via vacuum insulated lines for liquefaction of Nitrogen. Three of the 330 W pulse tubes have been mounted to a single 1000 cc DPWG to produce > 1 kW of cooling power at 77 K, which is one of the topics presented in another paper at this conference. Details of the design, development, testing and integration are presented.