Abstract Sunpower, Inc. and Gedeon Associates partnered to develop single and two-stage pulse tube cryocoolers under Small Business Innovative Research (SBIR) funding from NASA Goddard Space Flight Center. The development centered around using the high-efficiency, low-cost linear compressor that Sunpower has already taken to the manufacturing level with its M87 Stirling cryocooler. The primary goal was to demonstrate efficient cooling at 77K with a single-stage pulse tube cold head. Both in-line and u-tube configurations of single-stage pulse tube cold heads were fabricated and tested. Cooling at 30 K with a two-stage cold head was a secondary goal undertaken to gain experience with multi-staging. The second stage was designed as an add-on component to the single-stage u-tube configuration. All designs implemented inertance tubes as acoustical tuning devices. The ultimate objective was to establish the commercial potential of linear-compressor driven pulse tube cryocoolers and whether they could be cost competitive with the Sunpower M87 Stirling cryocooler. High efficiency was demonstrated with the single-stage pulse tube cooler achieving 5.2 W of heat lift at 77K with 100 W electrical input power, and the two-stage pulse tube cooler lifting 260mW at 30K, again with 100 W electrical input.
Development of Single and Two-Stage Pulse Tube Cryocoolers with Commercial Linear Compressors
Cryocoolers 12 ; 139-147
01.01.2003
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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