Summary
The closed-cycle J-T cooler has been widely used in long-term missions, but as the temperature goes down, it gains the disadvantages of lower efficiency, lower reliability and higher complexity. An effective solution is to couple the J-T cooler with a pulse tube cryocooler. This study aims at the cooling temperature of 4 K with the hybrid system. A thermodynamic model of the J-T cooler precooled by a three stage cryocooler is developed and the working principles of the components are analyzed. The research shows the cooling capacity is always positively related to the lowest cooling temperature. The cooling capacity is determined by the compressor, aftercooler and the heat sinks, while the cooling temperature is mainly affected by the heat exchangers and throttling device. An experimental system is designed as well, and the next work is on the way.
Available documents
Format PDF
Pages: 8 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Investigation on a J-T cooler used to couple with a pulse tube cryocooler.
- Record ID : 30016236
- Languages: English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Publication date: 2015/08/16
- DOI: http://dx.doi.org/10.18462/iir.icr.2015.0362
Links
See other articles from the proceedings (657)
See the conference proceedings
Indexing
- Themes: Small-scale cryogenic applications, cryocoolers
- Keywords: Pulse tube; Joule-Thomson; Cooling; Performance; Modelling; Cryocooler
-
Investigation on pulse tube/J-T hybrid cryocool...
- Author(s) : GAO Z., DANG H., ZHAO Y., et al.
- Date : 2015/08/16
- Languages : English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Formats : PDF
View record
-
Investigation of the regenerator performance us...
- Author(s) : YU J. P., CHEN G. B., GAN Z. H.
- Date : 1998/04/21
- Languages : English
- Source: Cryogenics and refrigeration. Proceedings of ICCR '98.
View record
-
Cryoréfrigérateurs.
- Author(s) : RAVEX A.
- Date : 1997/04/02
- Languages : French
- Source: Cinquièmes Journées de cryogénie et de supraconductivité. Recueil des conférences et posters.
View record
-
Etat de l'art et applications des petits cryore...
- Author(s) : RAVEX A.
- Date : 1999/01
- Languages : French
- Source: Rev. gén. Froid - vol. 88 - n. 990
View record
-
Innovazione diversificata.
- Author(s) : SPENCER U.
- Date : 2001/06
- Languages : Italian
- Source: Zero sotto Zero - vol. 10 - n. 5
View record