Conveners
C4OrC - Pulse Tube and Thermoacoustic Coolers: Large Scale Applications (Non-Aerospace)
- Wolfgang Stautner (GE Global Research)
- Srinivas Vanapalli (University of Twente)
We have developed a 2 W class 4 K pulse tube cryocooler, Cryomech model PT420, for applications that require large cooling capacities, such as a superconducting magnet and dry dilution, etc. This paper presents the optimization of the prototype PT420 with regard to structure and operating parameters. This prototype has bottom temperatures of 24.7 K for the 1st stage and 2.3 K for the 2nd...
Fabrum Solutions, in collaboration with Absolut System and Callaghan Innovation, produce a range of large pulse tube cryocoolers based on the metal diaphragm pressure wave generator technology (DPWG). The largest cryocooler consists of three in-line pulse tubes working in parallel on a 1000 cc swept volume DPWG. It has demonstrated 1280 W of refrigeration at 77 K, from 24 kW of input power and...
Callaghan Innovation and Fabrum Solutions, in collaboration with Absolut System, have produced a range of large pulse tube cryocoolers. The cryocoolers are based on Callaghan Innovation’s metal diaphragm pressure wave generator technology (DPWG) which has matured over the last 10 years to become a viable option for providing acoustic power to large pulse tube cryocoolers. The largest...
The pulse tube cryocooler has the advantage of no moving part at the cold end and offers a high reliability. To further extend its use in commercial applications, efforts are still needed to improve efficiency, reliability and cost effectiveness. This paper generalized several key innovations in our cooler products. The cooler consists of moving magnet compressor, and coaxial cold finger....
This study proposes a multi-stage heat-driven travelling-wave thermoacoustic refrigeration system operating at liquefied natural gas temperature, which consists of two thermoacoustic engines and one thermoacosutic cryocooler in a closed-loop configuration. Three thermoacoustic units connect each other through a resonance tube of small cross-sectional area, achieving “self-matching” for...
A highly-reliable cryocooler with kw-class cooling capacity is considered as a promising candidate for application in the small-scale liquefied natural gas plant. This paper introduces a three-stage traveling-wave thermoacoustically-driven cryocooler desirable for such demand. By including three thermoacoustic engine units and a pulse tube cooler in a traveling-wave loop with...
