摘要
为了开发高效的太阳能冷却技术,建立了一个由光伏(photovoltaic,PV)模块和基于范德华异质结构(van der Waals heterostructure,vdWH)的热离子制冷器(thermionic refrigerator,TIR)组成的新型耦合系统。在充分考虑内部和外部的不可逆因素的情况下,建立了耦合系统的理论模型,推导了关键性能指标的数学表达式。在此基础上,研究了耦合系统的一般性能特征,并确定了允许系统运行的电压区域。根据计算,最大制冷量和最大性能系数(coefficient of performance,COP)分别为75.88 W和0.49。此外,还进行了灵敏度分析,以得出关键参数对整体性能影响的规律和大小,包括太阳辐照度、有效肖特基势垒高度、层间热阻、外部热阻、热泄漏热阻和热库温度。所得结果可能有助于实际耦合系统的设计和运行。
For developing an efficient solar cooling technology,a novel coupled system comprising a photovoltaic(PV)module and a van der Waals heterostructure(vdWH)-based thermionic refrigerator(TIR)is established.With full consideration of internal and external irreversibility,the theoretical model of the coupled system is constructed,and mathematical expressions for the key performance indicators are derived.On this basis,the general properties of the coupled system are investigated,and the voltage region permitting the system to operate is determined.According to the calculations,the maximum refrigerating capacity and the maximum coefficient of performance(COP)are 75.88 W and 0.49,respectively.Furthermore,sensitivity analyses are conducted to derive the regularity and magnitude of the impacts of critical parameters on the overall performance of the coupled system,including solar irradiance,effective Schottky barrier height,inter-layer thermal resistance,external thermal resistance,heat leakage thermal resistance and hot reservoir temperature.The obtained outcomes may contribute to the design and operation of practical coupled systems.
作者
鹿振
黄跃武
LU Zhen;HUANG Yuewu(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China)
