摘要
为了研究不同相变材料(Phase Change Material, PCM)对太阳能光伏/光热-相变材料(Photo-voltaic/Thermal system-Phase Change Material, PV/T-PCM)系统性能的影响,基于能量守恒原理,构建了PV/T-PCM系统的数学模型,并利用FLUENT进行模拟,对基于不同相变材料PV/T-PCM系统的电效率、热效率、总效率等性能参数进行了比较。结果显示:综合PV/T-PCM系统的总效率、火用效率、热性能和电性能4个方面,在60 min以后因为温度逐渐稳定火用效率趋于稳定,且4种系统火用效率差值仅为1.01%;电性能最优的是基于石蜡C18的PV/T系统,该系统在降低光伏板温度25.34%的同时,提高了14.81%的电功率和13.52%的电效率;但从系统的总效率、热性能出发,基于石蜡的衍生物OM32的PV/T系统性能是最优的,能够使热功率和热效率分别达到653.93W和54.49%,同时总效率可以达到80.27%。
In order to investigate the effects of different Phase Change Material(PCM)on the performance of Solar Photovoltaic/Thermal-Phase Change Material(PV/T-PCM)system,a mathematical model of the PV/T-PCM system was constructed based on the principle of energy conservation.FLUENT was used for simulation to compare the performance parameters such as electrical efficiency,thermal efficiency,and overall efficiency of PV/T-PCM systems based on different phase change materials.The results show that the overall efficiency,thermal efficiency,thermal performance,and electrical performance of the integrated PV/T-PCM system tend to stabilize after 60 minutes due to the gradual stabilization of temperature,and the difference in thermal efficiency among the four systems was only 1.01%;The PV/T system based on paraffin C18 has the best electrical performance,which not only reduces the temperature of the photovoltaic panel by 25.34%,but also increases the electrical power by 14.81%and the electrical efficiency by 13.52%;However,in terms of overall efficiency and thermal performance of the system,the PV/T system based on the paraffin derivative OM32 has the best performance,with thermal power and efficiency reaching 653.93W and 54.49%,respectively,while the overall efficiency can reach 80.27%.
作者
马德林
顾炜莉
叶美宏
李萌
王佳男
MA Delin;GU Weili;YE Meihong;LI Meng;WANG Jianan(School of Civil Engineering,University of South China,Hengyang 421001,Hunan,China)
出处
《建筑节能(中英文)》
2025年第10期78-84,共7页
Building Energy Efficiency
关键词
相变材料
PV/T-PCM系统
温度
效率
性能参数
Phase Change Material(PCM)
Solar Photovoltaic/Thermal-Phase Change Material(PV/T-PCM)system
temperature
efficiency
performance parameters
