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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 p0 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.
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 p0 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.
Quantum degeneracy effect on performance of a thermoacoustic refrigeration micro-cycle
Wu, Feng (author) / Chen, Lingen (author) / Zhang, Chunping (author) / Ding, Guozhong (author) / Li, Duanyong (author) / Kan, Xuxian (author)
2010-06-01
Article (Journal)
Electronic Resource
English
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