上表面通道冷却下不同参数条件对水冷PV/T系统性能的影响  

Influence of Different Parameters on the Performance of Water-cooledPV/T System under Upper Surface Channel Cooling

作　　者：肖于宗 顾炜莉 蒋胜蓝 XIAO Yuzong;GU Weili;JIANG Shenglan(School of Architecture and Construction,University of South China,Hengyang 421000,Hunan,China)

机构地区：[1]南华大学土木工程学院,湖南衡阳421000

出　　处：《建筑节能(中英文)》2025年第4期126-131,共6页Building Energy Efficiency

摘　　要：利用水等介质对太阳辐射选择吸收的原理,将PV/T系统内热收集器部件中的冷却通道布置在光伏板的上方,冷却介质除了吸收光伏板表面的废热以外,还可以吸收太阳辐射中不用于发电的红外波段辐射,可以在不影响系统电效率的基础上,使冷却水吸收更多的热量,从而获得更高的能源利用率。以上表面通道水冷PV/T系统为对象,对不同参数条件下该系统的热电效率和(火用)效率进行研究,同时对系统的总能和总(火用)效率进行研究。模拟结果表明:热效率对系统总能效的影响更大,电(火用)效率在系统总(火用)效率的变化中起主导作用,当改变入口质量流量和冷却通道高度时,总(火用)效率存在极大值。Based on the principle of selecting and absorbing solar radiation by water and other media,the cooling channels in the heat collector components within the PV/T system are arranged above the photovoltaic panels.In addition to absorbing waste heat from the surface of the photovoltaic panels,the cooling medium can also absorb the infrared band radiation that is not used for power generation from the solar radiation,which allows the cooling water to absorb more heat without affecting the electrical efficiency of the system,thus achieving higher energy efficiency.Taking the surface channel water-cooled PV/T system as the object,the thermoelectric efficiency and exergic efficiency of the system were studied under different parameter conditions,as well as the total energy and exergic efficiency of the system.Simulation results show that thermal efficiency has a greater impact on the overall energy efficiency of the system,while electrical exergic efficiency has a greater influence on the overall exergic efficiency.When the inlet mass flow rate and cooling channel height are changed,the overall exergic efficiency reaches a maximum value.

关 键 词：水冷 热电效率 (火用)效率 数值模拟 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程] TK519[动力工程及工程热物理—热能工程]