论文信息 - The influence of quantum degeneracy and irreversibility on the performance of a Fermi quantum refrigeration cycle

The influence of quantum degeneracy and irreversibility on the performance of a Fermi quantum refrigeration cycle

An irreversible cycle model of the quantum refrigeration cycle using an ideal Fermi gas as the working substance is established. The cycle consists of two adiabatic and two isobaric processes and consequently may be simply referred to as the Fermi Brayton refrigeration cycle. The performance of the cycle is investigated, based on the equation of state of an ideal Fermi gas. Expressions for several important performance parameters, such as the coefficient of performance, work input and refrigeration load, are derived. The influence of the quantum degeneracy of the Fermi gas and the irreversibility in the cycle on the performance of the Fermi Brayton refrigeration cycle is analysed. The minimum pressure ratio of the cycle is determined. The optimally operating problems of the cycle and several special cases are discussed in detail. The results obtained here are general and may reveal the general performance characteristics of the Fermi Brayton refrigeration cycle.

[1] J. Gordon,et al. General performance characteristics of real heat engines , 1992 .

[2] Claude Garrod,et al. Statistical mechanics and thermodynamics , 1995 .

[3] Alejandro Medina,et al. Regenerative gas turbines at maximum power density conditions , 1996 .

[4] Bahri Sahin,et al. Maximum power density analysis of an irreversible Joule - Brayton engine , 1996 .

[5] Santiago Velasco,et al. Optimum performance of a regenerative Brayton thermal cycle , 1997 .

[6] Altug Sisman,et al. On the power cycles working with ideal quantum gases : I. The Ericsson cycle , 1999 .

[7] Hasan Saygin,et al. Quantum degeneracy effect on the work output from a Stirling cycle , 2001 .

[8] Altug Sisman,et al. Brayton refrigeration cycles working under quantum degeneracy conditions , 2001 .

[9] Jincan Chen,et al. The influence of regenerative losses on the performance of a Fermi Ericsson refrigeration cycle , 2002 .

[10] Marlan O Scully,et al. Quantum afterburner: improving the efficiency of an ideal heat engine. , 2002, Physical review letters.

[11] Bihong Lin,et al. The Performance Analysis of a Quantum Brayton Refrigeration Cycle with an Ideal Bose Gas , 2003, Open Syst. Inf. Dyn..

[12] Bihong Lin,et al. Low-temperature behaviour of an ideal Bose gas and some forbidden thermodynamic cycles , 2003 .