Abstract Based on the state equation of an ideal quantum gas, the regenerative loss of a Stirling engine cycle working with an ideal quantum gas is calculated. Thermal efficiency of the cycle is derived. Furthermore, under the condition of quantum degeneracy, several special thermal efficiencies are discussed. Ratios of thermal efficiencies versus the temperature ratio and volume ratio of the cycle are made. It is found that the thermal efficiency of the cycle not only depends on high and low temperatures but also on maximum and minimum volumes. In a classical gas state the thermal efficiency of the cycle is equal to that of the Carnot cycle. In an ideal quantum gas state the thermal efficiency of the cycle is smaller than that of the Carnot cycle. This will be significant for deeper understanding of the gas Stirling engine cycle.
Received: 03 February 2006
Revised: 21 March 2006
Accepted manuscript online:
(Quantum computation architectures and implementations)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10465003), the Natural
Science Foundation of Jiangxi Province, China (Grant No 0412011)
and Science Foundation of Jiangxi Education Bureau, China.
Cite this article:
He Ji-Zhou(何济洲), Mao Zhi-Yuan(毛之远), and Wang Jian-Hui(王建辉) Influence of quantum degeneracy on the performance of a gas Stirling engine cycle 2006 Chinese Physics 15 1953
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