玻色气体的量子简并性对不可逆布雷顿制冷循环性能的影响  

THE INFLUENCE OF THE QUANTUM DEGENERACY OF A BOSE GAS ON THE PERFORMANCE OF AN IRREVERSIBLE BRAYTON REFRIGERATION CYCLE

作　　者：杨宇霖[1] 张悦[1] 陈金灿[1] 

机构地区：[1]厦门大学物理系,厦门361005

出　　处：《低温物理学报》2005年第1期79-86,共8页Low Temperature Physical Letters

摘　　要：基于不可逆布雷顿制冷循环模型和理想玻色气体的状态方程 ,导出以玻色气体为工质的布雷顿制冷循环的输入功、制冷系数、制冷量等重要参数的表示式 ,由此讨论玻色气体的量子简并性和不可逆绝热过程对循环性能的影响 ,揭示以玻色气体为工质的不可逆布雷顿制冷循环的一般性能特性 ,从而导出一些重要结论 .进而给出几种特殊情况下循环的性能特性 .得到的结果有助于进一步了解经典布雷顿制冷循环和量子布雷顿制冷循环之间的区别和联系 .The expressions of some important parameters such as the work input, coefficient of performance and refrigeration load of a Brayton refrigeration cycle working with a Bose gas are derived, based on an irreversible Brayton refrigeration cycle model and the equation of state of the ideal Bose gas. They are used to discuss the influence of the quantum degeneracy of the Bose gas and the irreversible adiabatic processes on the performance of the cycle. General performance characteristics of an irreversible Brayton refrigeration cycle using the Bose gas as the working substance are revealed and consequently some important conclusions are obtained. Moreover, the performance characteristics of the cycle under some special cases are given. The results obtained here will be helpful to further understand the difference and connection between the classical and quantum Brayton refrigeration cycles.

关 键 词：理想玻色气体 量子简并 表示式 不可逆 绝热过程 状态方程 制冷循环 制冷系数 工质 制冷量 

分 类 号：O414.1[理学—理论物理]