考虑透射概率的能量选择性电子热泵  

Energy selective electron heat pump with transmission probability

作　　者：何济洲[1] 贺兵香[1] 

机构地区：[1]南昌大学物理系,南昌330031

出　　处：《物理学报》2010年第4期2345-2349,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10765004)资助的课题~~

摘　　要：研究了具有不同温度和不同化学势的两个热库中的电子通过一个能量透射谱进行传输的问题,得到电子通过能量透射谱传输所产生的热流.进一步考虑了两个热库之间的辐射热漏流,数值计算出电子热泵的性能参数,绘出了热泵的性能特征曲线.分析了热漏、共振中心能级位置和能级宽度等参数对热泵工作性能的影响.当共振能级宽度无限小时,热泵系数可以达到Carnot值.The electron transport through an energy transmission spectrum between two reservoirs with different temperatures and chemical potentials is studied.The heat flow carried by the electrons is obtained.Taking into account the radiative heat leaks between the two electron reservoirs,the performance parameters of the heat pump are derived by numerical calculation.The performance characteristic curves of the heat pump are plotted.The influence of the heat leaks,the position of resonance energy level and the width of the level on the operation performance of the heat pump is analyzed.When the width of resonance energy level is infinitely small,the coefficient of performance may reach the value of Carnot heat pump.

关 键 词：透射谱 态密度 辐射热漏 电子热泵 

分 类 号：TH38[机械工程—机械制造及自动化]