首页|相变蓄热对光伏相变复合围护结构隔热及发电性能的影响

相变蓄热对光伏相变复合围护结构隔热及发电性能的影响

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基于光伏发电和相变蓄热耦合特性,提出了光伏相变复合建筑围护结构,并进一步分析相变蓄热对复合围护结构性能的影响规律.首先构建光伏相变复合围护结构热流传递模型,然后探究相变层结构位置、相变温度以及相变厚度对其发电能力和隔热效果的影响.在此基础上,通过对比传统围护结构和复合围护结构的热工特性,阐述复合围护结构调节室内环境负荷及节能潜力.研究表明,相变蓄热对于光伏相变复合围护结构发电和隔热性能具有较大影响.相变材料越靠近室内其隔热效果越好,室内温度表现出向相变温度靠近的趋势;相变材料靠近光伏板意味着可以更充分地储存热量,光伏发电量也就越高.其中相变材料靠近光伏板时发电量为1 263.06 J,较光伏围护结构有明显提升.同时相变材料的厚度在40 mm时发电量达到最大值,较10 mm时的工况提升了0.55％.此外,在一个运行周期内,光伏相变复合围护结构显著降低了建筑冷负荷,表现出较好的隔热与节能效果.
Effect of phase change heat storage on thermal insulation and power generation performance of photovoltaic phase change composite envelope structure
Based on the coupling characteristics of photovoltaic power generation and phase change heat storage,a photovoltaic phase change composite building envelope structure was pro-posed and the effect of phase change heat storage on the performance of the composite building envelope was further analyzed.Firstly,the heat flow transfer model of photovoltaic phase change composite envelope structure was constructed,and then the influence of phase change layer struc-ture position,phase change temperature and phase change thickness on its power generation ca-pacity and thermal insulation effect was explored.On this basis,by comparing the thermal char-acteristics of traditional envelope structure and composite envelope structure,the indoor environ-mental load regulation and energy saving potential of composite envelope structure were expoun-ded.The research shows that the phase change heat storage has a great influence on the power generation and thermal insulation performance of the photovoltaic phase change composite enve-lope structure.The closer the phase change material is to the room,the better the thermal insu-lation effect is;and the indoor temperature shows a tendency to approach the phase change tem-perature.The phase change material close to the photovoltaic panel means that the heat can be stored more fully,and the photovoltaic power generation is higher.When the phase change mate-rial is close to the photovoltaic panel,the power generation is 1 263.06 J,which is significantly improved compared with the photovoltaic envelope structure.At the same time,when the thick-ness of the phase change material is 40 mm,the power generation reaches the maximum value,which is 0.55％ higher than the working condition of 10 mm.In addition,within one operating cycle,the photovoltaic phase change composite envelope structure significantly reduces the build-ing's cooling load,showing good heat insulation and energy saving effects.

photovoltaic phase change composite envelope structurebuilding energy conserva-tionthermal characteristicsheat insulation performancepower generation performance

蔡阳、刘子瑞、黄颖茜、董明浩、吕游、赵福云

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暨南大学国际能源学院,广东珠海 519070

华北电力大学新能源电力系统全国重点实验室,北京 102206

武汉大学动力与机械学院,湖北武汉 430072

光伏相变复合围护结构 建筑节能 热工特性 隔热性能 发电性能

广东省基础与应用基础研究基金自然科学基金面上项目新能源电力系统国家实验室开放课题广东省普通高校重点领域专项项目

2023A1515010681LAPS230172022ZDZX1005

2024

10.13338/j.issn.1674-649x.2024.05.015

西安工程大学学报
西安工程大学

西安工程大学学报

CSTPCD
影响因子：0.473
ISSN：1674-649X
年,卷(期)：2024.38(5)