Quantum degeneracy effect on performance of a thermoacoustic refrigeration micro-cycle
A new model consisting of two isobaric branches connected by two straight-line branches is established to investigate the thermodynamic performance of a thermoacoustic refrigeration micro-cycle. The influence of quantum degeneracy on the dimensionless cooling load R* of the cycle is analysed based on the correction equation of state of an ideal Bose gas. The relationship between the dimensionless cooling load R* and the coefficient of performance (COP) ϵ is obtained under the condition of weak gas degeneracy. The results show that the lowest temperature of the working fluid in the thermoacoustic refrigeration micro-cycle has to be higher than the Bose--Einstein condensation temperature so that the cycle can be carried out. Under the condition of weak gas degeneracy, the dimensionless cooling load R* is a monotonically increasing function of the COP ϵ, the initial pressure p<sub>0</sub> and the parameter y. Under the condition of weak gas degeneracy, the COP ϵ is the same as that of the classical ideal gas, whereas the dimensionless cooling load R* is larger than that of the classical ideal gas. Copyright The Author 2010. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.
Year of publication: |
2010
|
---|---|
Authors: | Wu, Feng ; Chen, Lingen ; Zhang, Chunping ; Ding, Guozhong ; Li, Duanyong ; Kan, Xuxian |
Published in: |
International Journal of Low-Carbon Technologies. - Oxford University Press, ISSN 1748-1317. - Vol. 5.2010, 2, p. 96-100
|
Publisher: |
Oxford University Press |
Saved in:
Online Resource
Saved in favorites
Similar items by person
-
Wu, Feng, (2009)
-
Ecological performance optimization of a thermoacoustic cooler
Kan, Xuxian, (2009)
-
Kan, Xuxian, (2010)
- More ...