论文信息 - The Performance Analysis of a Quantum Brayton Refrigeration Cycle with an Ideal Bose Gas

The Performance Analysis of a Quantum Brayton Refrigeration Cycle with an Ideal Bose Gas

A Brayton refrigeration cycle using an ideal Bose gas as the working substance is simply referred to as a quantum Brayton refrigeration cycle, which consists of two constant-pressure and two adiabatic processes. The influence of quantum degeneracy on the performance of the cycle is investigated, based on the correction equation of state of an ideal Bose gas. The general expressions of the coefficient of performance, refrigeration load and work input of the cycle are calculated. The lowest temperature of the working substance and the minimum pressure ratio of the two constant-pressure processes for a quantum Brayton refrigeration cycle are determined. The variations of the relative refrigeration load with the temperature of the cooled space and the pressure of the low constant-pressure process are discussed for three special cases. Some curves related to the important performance parameters are given. The results obtained here are compared with those of a classical Brayton refrigeration cycle using an ideal gas as the working substance. Some significant conclusions are obtained.

Bihong Lin | Jincan Chen

[1] Jincan Chen,et al. Quantum refrigeration cycles using spin-1/2 systems as the working substance. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[2] Ronnie Kosloff,et al. On the classical limit of quantum thermodynamics in finite time , 1992 .

[3] Feldmann,et al. Performance of discrete heat engines and heat pumps in finite time , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[4] Jincan Chen,et al. Influence of quantum degeneracy on the performance of a Stirling refrigerator working with an ideal Fermi gas , 2002 .

[5] Ronnie Kosloff,et al. A quantum-mechanical heat engine operating in finite time. A model consisting of spin-1/2 systems as the working fluid , 1992 .

[6] Jincan Chen,et al. Density of states and thermodynamic properties of an ideal system trapped in any dimension , 1999 .

[7] Bihong Lin,et al. The performance of a quantum heat engine working with spin systems , 2002 .

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

[9] Fengrui Sun,et al. Finite-time exergoeconomic performance bound for a quantum Stirling engine , 2000 .

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

[11] Peter Salamon,et al. Heat engines in finite time governed by master equations , 1996 .