An isothermal model of a hybrid Stirling/reverse-Brayton cryocooler.
Author(s) : NELLIS G. F., MADDOCKS J. R.
Type of article: Article
Summary
The paper presents a model of a cryogenic refrigerator that integrates a reverse-Brayton lower temperature stage with a 2-piston Stirling upper temperature stage using a rectification system of check valves and buffer volumes. The numerical model extends the isothermal Schmidt analysis of the Stirling cycle by deriving the additional dimensionless governing equations that characterize the recuperative system. Numerical errors are quantified and the results are verified against analytical solutions in the appropriate limits. The model is used to explore the effect of the rectification system's characteristics on the overall cycle's behaviour. Finally, the model is used to optimize the hybrid system's design by varying the swept volume ratio and phase angle in order to maximize the refrigeration per unit of heat transfer in the recuperator and regenerator.
Details
- Original title: An isothermal model of a hybrid Stirling/reverse-Brayton cryocooler.
- Record ID : 2005-0003
- Languages: English
- Source: Cryogenics - vol. 43 - n. 1
- Publication date: 2003/01
Links
See the source
Indexing
- Themes: Small-scale cryogenic applications, cryocoolers
- Keywords: Brayton; Stirling; Modelling; Cryocooler
-
A single stage reverse Brayton cryocooler: perf...
- Author(s) : DOLAN F. X., SWIFT W. L., TOMLINSON B. J., GILBERT A., BRUNING J.
- Date : 1996/06/25
- Languages : English
- Source: Cryocoolers 9. Proceedings of the International Cryocooler Conference.
View record
-
Cryogenic boil-off reduction system.
- Author(s) : PLACHTA D. W., GUZIK M. C.
- Date : 2014/03
- Languages : English
- Source: Cryogenics - vol. 60
View record
-
Semi-empirical modelling of small size radial t...
- Author(s) : MARTINS G., MENDONZA O. S. H., TUMIALAN J. A.
- Date : 2006/07/17
- Languages : English
- Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
- Formats : PDF
View record
-
MALONE REFRIGERATION.
- Author(s) : SWIFT G. W.
- Date : 1990
- Languages : English
- Source: ASHRAE Journal - vol. 32 - n. 11
View record
-
Cryogenic cooling system Brayton with new confi...
- Author(s) : SCHUSTR P., FIBRICH M., POLAN J., et al.
- Date : 2017/05/15
- Languages : English
- Source: Cryogenics 2017. Proceedings of the 14th IIR International Conference: Dresden, Germany, Mai 15-19, 2017.
- Formats : PDF
View record