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首页> 外文期刊>Energy and Buildings >Photothermal-structural-fluid behaviors of PV-ETFE cushion roof in summer: Numerical analysis using three-dimensional multiphysics model
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Photothermal-structural-fluid behaviors of PV-ETFE cushion roof in summer: Numerical analysis using three-dimensional multiphysics model

机译：夏季PV-ETFE垫屋顶的光热结构 - 流体行为：三维多麦体型模型的数值分析

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摘要

PV-ETFE cushion roof combines transparent ETFE films and flexible photovoltaics, making it possible to harvest both electricity and heat from solar energy simultaneously. However, high temperature caused by solar radiation remarkably affects the mechanical behaviors of ETFE foils and converting efficiency of PV due to their thermal sensitivity. To tackle this issue, it is critical to understand the photothermal-structural-fluid performance of PV-ETFE cushion. Due to the difficulty to measure by experiment, this paper presents a three-dimensional mathematical model considering heat-structure-fluid couplings to conduct numerical analysis. Time-dependent analysis and dynamic boundary conditions are applied to study the behaviors which are difficult to observe in experiment. Results explain how photothermal-structural-fluid properties vary in a typical summer day from 9:00 to 17:00. Incident solar radiation and PV modules are two main factors that affect the temperature distribution of the cushion roof and the circulation of internal air. Eight groups of air circulation are found inside cushion chambers during simulating period. Air pressure is mainly determined by average temperature rather than local air flow and uneven heat distribution. It is also found that the worst structural case occurs on the upper layer at noon in terms of structural safety factor. Structural safety of PV-ETFE cushion roof in typical summer days can be guaranteed. These results can be applied further to improve and optimize the design of PV-ETFE cushion roof. (C) 2020 Elsevier B.V. All rights reserved.
机译：PV-ETFE缓冲屋顶结合了透明的ETFE薄膜和柔性光伏，使得可以同时从太阳能中收获电力和热量。然而，由太阳辐射引起的高温显着影响ETFE箔的机械行为以及由于其热敏性而导致PV的转换效率。为了解决这个问题，了解PV-ETFE缓冲的光热结构流体性能至关重要。由于难以通过实验测量，考虑到进行数值分析的热结构流体联轴器，提出了一种三维数学模型。应用时间依赖性分析和动态边界条件来研究难以在实验中观察的行为。结果解释了光热结构 - 流体特性如何在典型的夏日从9:00到17:00之间变化。入射的太阳辐射和光伏模块是影响垫屋顶温度分布和内部空气循环的两个主要因素。在模拟期间，在垫室内发现八组空气循环。气压主要由平均温度而不是局部空气流量和不均匀的热分布确定。还发现，在结构安全系数方面，中午的上层发生最差的结构情况。可以保证PV-ETFE缓冲屋顶的结构安全。可以保证典型的夏季天数。这些结果可以进一步应用，以改善和优化PV-ETFE垫屋顶的设计。 （c）2020 Elsevier B.v.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2020年第12期|110448.1-110448.12|共12页
  • 作者

    Yin Yue; Chen Wujun; Hu Jianhui; Zhao Bing; Huang Xiaofei;

  • 作者单位

    Shanghai Jiao Tong Univ Space Struct Res Ctr Dept Civil Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Space Struct Res Ctr Dept Civil Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Space Struct Res Ctr Dept Civil Engn Shanghai 200240 Peoples R China|State Key Lab Ocean Engn Shanghai 200240 Peoples R China|Collaborat Innovat Ctr Adv Ship & Deep Sea Explor Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Space Struct Res Ctr Dept Civil Engn Shanghai 200240 Peoples R China;

    New United Grp Co Ltd Changzhou 213166 Jiangsu Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ETFE cushion roof; Photovoltaics; Three-dimensional model; Heat-structure-fluid interaction;

    机译：ETFE缓冲屋顶;光伏;三维模型;热结构 - 流体相互作用;

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