太阳能PV/T空气集热器干燥性能实验研究

Experimental Study on Drying Performance of Solar PV/T Air Collector

采用太阳能光伏光热(Photovoltaic/thermal,PV/T)空气集热器收集太阳辐射并转化为热能和电能,为干燥系统提供能量.以玫瑰花为干燥物料,通过实验探究了太阳能PV/T空气集热器的热、电特性以及玫瑰花的干燥特性.实验结果表明晴天工况下该集热器的热、电效率和综合效率分别为32.06%、7.66%和45.93%,其所产电能能够满足5个6W的直流风机运行15.74h,且干燥4.04kg的玫瑰花所需的能量能够完全由太阳能提供.

A solar photovoltaic/thermal (PV/T) air collector was used to collect the solar radiation and convert them into heat and electricity for the solar drying system.With roses as the dry material,the thermal and electrical properties of the solar PV/T collector and the drying characteristics of the roses were investigated experimentally.According to the experimental results,the thermal,electrical and comprehensive efficiency of the collector were 32.06%,7.66% and 45.93%,respectively.The electric energy produced by the solar PV/T collector can meet the consume of 5 DC fans with 6 W for running 15.77 h.According to theoretical calculation,the thermal energy can be provided entirely by solar energy using the PV/T collector to dry roses of 4.04 kg.