摘要
以光伏/相变材料冷却系统(PV/PCM)为研究对象,数值研究翅片间距、厚度及外翅片长度对PCM换热性能影响。结果表明,翅片间距降低和外翅片长度增加可强化光伏组件冷却,提升电池发电性能,但翅片厚度对PCM换热性能影响较小。此外,选取无外翅片(方案1)和有外翅片(方案2,间距7.3 mm、厚度2 mm和长度25 mm)做对比研究,相对于方案1,方案2融化时间延长34.6%,电效率下降速度减缓68%且180 min时电池温度降低约30℃。
Photovoltaic/phase change material cooling system(PV/PCM)is regarded as research object in current study,the effects of fins spacing,fins thickness and length of external fins on the heat transfer performance of a PV/PCM cooling system are numerically investigated. Results indicate that the decreased fin spacing and the increased external fins length,can enhance the cooling effect and improve power generation of PV modules. Nevertheless,the fin thickness has little effect on the heat transfer of PCM. In addition,compared with the system without fins(Case 1),melting duration of the system with fins spacing of 7.3 mm,fins thickness of 2 mm and external fins length of 25 mm(Case 2),extends by 34.6%. Meanwhile,the decline rate of electrical efficiency of Case 2 slows down by68%,and the surface temperature reduced by about 30 ℃ after 180 minutes.
作者
沈朝
计长勇
张春晓
Shen Chao;Ji Changyong;Zhang Chunxiao(School of Architecture,Harbin Institute of Technology,Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin 150090,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第9期52-56,共5页
Acta Energiae Solaris Sinica
基金
黑龙江省自然科学基金(YQ2020E019)。
关键词
太阳电池
相变材料
温度控制
转换效率
融化周期
solar cells
phase change materials
temperature control
conversion efficiency
melting duration
