Abstract
In this paper, the model of a three-terminal nanowire refrigerator is established based on one-dimensional (1D) ballistic conductor. It is composed of an intermediate cavity and left/right electron reservoir in which the intermediate cavity and left/right electron reservoir are connected by 1D nanowire conductor. The expression for the charge current and that for the energy current flowing from two electron reservoirs are derived by using Landauer formula and basic thermodynamic laws. Then, the working region of the refrigerator is obtained, its performance characteristics are analyzed, and its performance optimization is discussed. It is shown that the refrigerator under different parameters operates in different working regions. For each refrigeration region, there is an upper limit of temperature difference, and the refrigerator will be unable to refrigerate beyond the upper limit. The characteristic curve of the cooling rate changing with performance coefficient is a loop-shaped one, which provides an important index for us to evaluate the performance of the refrigerator. The energy level width of the nanowire can be reduced as much as possible, which will improve the performance of the refrigerator.
Highlights
the model of a three-terminal nanowire refrigerator is established based on one-dimensional (1D) ballistic conductor
It is composed of an intermediate cavity
right electron reservoir are connected by 1D nanowire conductor
Summary
线性不可逆热力学框架下一个无限尺寸热源而有限尺寸冷源的制冷机的性能分析 Performance analysis of a refrigerator operating between an infinite-sized hot reservoir and a finite-sized cold one within linear irreversible thermodynamics 物理学报. 光子驱动量子点制冷机 Quantum dot refrigerator driven by photon 物理学报. 稀释制冷机及其中的热交换问题 Dilution refrigerator and its heat transfer problems 物理学报. 用于亚开温区的极低温绝热去磁制冷机 Ultra-low temperature adiabatic demagnetization refrigerator for sub-Kelvin region 物理学报. 例如, Chen 和 Zhang 等 [14−19] 具体研究了不同能量过滤 体的三端能量选择性电子器件的热力学性能.
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