吹胀微流道式太阳能光伏/光热(PV/T)集热系统春季实验研究  

Spring Experimental Study on Inflation Micro-flow-path Solar Photovoltaic/thermal( PV/T) Collector System

作　　者：荆博龙 蔡颖玲 黄兴华 林志坚 JING Bolong;CAI Yingling;HUANG Xinghua;LIN Zhijian(Shanghai University of Engineering Science School of Mechanical and Automotive Engineering,Shanghai 201620,China;Shanghai BOYON New Energy Technology Co.,LTD,Shanghai 201611,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]上海博阳新能源科技股份有限公司,上海201611

出　　处：《建筑科学》2020年第4期123-128,共6页Building Science

基　　金：裸心堡度假别墅低碳供能系统方案优化设计(15)JX-001。

摘　　要：通过吹胀微流道PV/T(photovoltaic/thermal)实验平台实测春季PV/T组件倾斜角、循环水流量因素在减去水泵耗电量和控制相同初始水箱温度在13.5℃后分析这2种因素对系统实际热/电综合效率的影响。倾斜角从18°增至32°,PV/T平均实际综合效率从44.6%增至55.61%,对系统实际综合效率起到正相关作用。循环水流量从60 L/h增至100 L/h,PV/T平均实际综合效率从49.32%先增至53.48%后降至46.53%,效率随水泵功率存在先增后减的规律,而不是一直下降。循环水流量的增加在一定程度上可以提高热效率,当热效率达到阈值后,再增加循环水流量相当于增加额外耗功,导致综合效率的下降。9组实验中较佳运行方式是32°倾斜角,80 L/h循环水流量,比18°倾斜角,100 L/h工况综合效率高18.06%。即便是在平均辐照最低和综合效率最低2种工况下,单块PV/T板实验期间实际发电量分别是0.371 k W·h和0.48 k W·h,均可满足小型直流电器用电需求。本实验目的是在上海地区为太阳能PV/T集热系统春季运行优化提供帮助。This paper used the inflation micro-flow-path photovoltaic/thermal( PV/T) experiment platform to measure the inclination angle of PV/T module and circulating water flow factor,and analyzed their influences on the actual thermal/electrical efficiency of the system was analyzed after subtracting the pump power consumption and controlling the same initial tank temperature at 13.5 ℃ .As the inclination angle was increased from 18° to32°,the average comprehensive efficiency of PV/T increased from 44.6% to 55.61%,playing a positive role in the actual comprehensive efficiency of the system.The average comprehensive efficiency of PV/T increased from49.32% to 53.48% and then decreased to 46.53% as the circulating water flow was increased from 60 L/h to 100 L/h.With the increase of pump power,the efficiency first increased and then decreased,rather than falling all the way down.The increase of the circulating water flow can improve the thermal efficiency to a certain extent.When the thermal efficiency reached the threshold,the increase of circulating water flow was equivalent to adding additional power consumption,resulting in a decrease in the overall efficiency.The optimum operation mode in the nine groups of experiments was 32° inclination angle and 80 L/h circulating water flow,18.06% higher than that in 18° and 100 L/h.Even under the conditions of the lowest average irradiation and the lowest comprehensive efficiency,the actual power generation of a single PV/T board during the experiment was 0.371 kW·h and 0.48 k W·h,respectively,which can meet the demand of small DC electrical appliances.The purpose of this experiment was to provide assistance for the optimization of the solar PV/T collector system operation in spring of Shanghai.

关 键 词：PV/T组件 电效率 热效率 吹胀微流道 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]