光伏光热双热质耦合海水淡化系统数值研究  

Numerical Study of a Dual Heat and Mass Transfer Coupled Humidification and Dehumidification System Driven by PV/T Module

作　　者：路裕 何纬峰[1] 姚照辉 安浩浩 周萱 韩东[1] LU Yu;HE Weifeng;YAO Zhaohui;AN Haohao;ZHOU;Xuan;HAN Dong(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《工程热物理学报》2023年第4期871-878,共8页Journal of Engineering Thermophysics

基　　金：南京航空航天大学研究生科研与实践创新计划项目(No.xcxjh20210215)。

摘　　要：为了探究由光伏光热(PV/T)驱动的双热质耦合加湿除湿海水淡化系统的水电综合性能,基于能量与质量守恒原理构建了PV/T组件与加湿除湿系统的数学模型,揭示了液气比对系统相关热力学参数的影响规律,对比分析了不同顶温条件下系统的热力学性能,并在某典型天气状况下探究了逐时辐照度对系统性能的综合影响。研究结果表明:热容比为1对应的液气比大小是系统的最佳性能点,此时系统造水比(GOR)与产水量均达到最大值,产电量取得最小值;当顶温为60℃时,系统产电量与产水量的极值分别为481.13 k W·m^(-2)和43.10 kg·h^(-1);系统产水性能随顶温的升高而增强。当顶温从55?C升高到60和65℃时,系统最大产水量分别增加了34.5%和68.06%,三种顶温条件下的最大GOR分别为1.31、1.56和1.71。In order to obtain the comprehensive performance of a dual heat and mass transfer coupled humidification and dehumidification system driven by Photovoltaic/Thermal(PV/T)module,the mathematical model of PV/T,humidifier and dehumidifier are established based on the balance of heat and mass transfer.The effect of liquid-to-gas mass flow rate ratio on the relevant parameters of the system is revealed,and the performance under different top temperature and incident solar radiation are comparatively analyzed.Results illustrate that the liquid-to-gas mass fow rate ratio corresponding to unit value of heat capacity ratio is the optimal performance point of the system,where the system gained-output-ratio(GOR)and water production reach the maximum value,whereas the electricity reaches its minimum value.When the top temperature is 60℃,the peak value of electricity generation and produced water are 481.13 kW·m^(-2) and 43.10 kg·h^(-1),respectively.The water-yielding capacity of the system increases with the increase in top temperature.When the top temperature increased from 55℃ to 60 and 65℃,the maximum produced water increased by 34.5%and 68.06%,respectively,and the GOR is 1.31,1.56 and 1.71 at three different top temperature,respectively.

关 键 词：光伏光热 加湿除湿 造水比 联产系统 参数分析 

分 类 号：TK123[动力工程及工程热物理—工程热物理]