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首页> 外文期刊>Solar Energy >Thermal performance analysis of a new structured-core translucent vacuum insulation panel in comparison to vacuum glazing: Experimental and theoretically validated analyses
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Thermal performance analysis of a new structured-core translucent vacuum insulation panel in comparison to vacuum glazing: Experimental and theoretically validated analyses

机译：与真空玻璃相比，新型结构芯半透明真空隔热板的热性能分析：实验和理论验证的分析

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摘要

The notion at which, nowadays, building sector is being recognized to be nearly zero-energy buildings (NZEBs) relies partly on the thermal performance of its fabric insulation. Vacuum glazing (VG) technology attracted the research interest as an option to reduce heat loss through windows. However, the total glazing thermal transmittance (U-value) for VG increases with the use of smaller glazing area due to the edge-seal effects, due to the thermal short-circuit around the edges and the overall construction cost of VG leading to an unaffordable option to deal with energy conservation of buildings. Therefore, this study aims to propose a new structured core transparent vacuum insulation panel (TVIP) to accomplish insulation for the windows without edge sealing effect, with lower cost and can be easily retrofitted to the conventional windows of the existing buildings. To do this, VG and TVIP were constructed and their thermal conductivity were measured using heat flow meter apparatus. In addition, a 3D finite volume model considering the effect of surface to surface radiation, gas conduction, and thermal bridges through the spacer material and sealing material is developed. The model is validated with the experiments in this work and with the data for VG in the literature. The effect of vacuum pressure increase is simulated to mimic the vacuum deterioration problem and the effect of glazing size on the insulation performance of both VG and TVIP were investigated. The results indicate that for a smaller glazing area of less than 30 cm x 30 cm, the TVIP accomplished lower U-value compared with the VG at vacuum pressure of 0.1 Pa and 1 Pa. While, at a vacuum pressure of 10 Pa, the TVIP attained a lower U-value over the entire range of the investigated glazing sizes. Further, the edge-seal effect in the VG is diminished with the use of TVIP. Furthermore, the material cost per unit area of the TVIP is three times less than the cost of VG at laboratory scale. The results of the current study can guide vacuum window designers and researchers to further enhance the performance of TVIP based window to compete for the VG in the markets.
机译：如今，建筑行业被认为是几乎零能耗的建筑（NZEB）的概念部分取决于其织物隔热材料的热性能。真空玻璃（VG）技术作为减少窗户热损失的一种选择吸引了研究的兴趣。但是，由于边缘密封效应，边缘周围的热短路以及VG的总体建造成本，VG的总玻璃热透射率（U值）随着使用较小的玻璃面积而增加。处理建筑物节能的负担不起的选择。因此，本研究的目的是提出一种新型的结构芯透明真空隔热板（TVIP），以实现窗户的隔热而无边缘密封效果，并且成本较低，并且可以容易地改造为现有建筑物的常规窗户。为此，构建了VG和TVIP，并使用热流量计设备测量了它们的热导率。此外，还建立了一个3D有限体积模型，该模型考虑了表面到表面的辐射，气体传导以及通过垫片材料和密封材料的热桥的影响。该模型已通过本文中的实验和文献中有关VG的数据进行了验证。模拟了真空压力增加的影响，以模拟真空劣化问题，并研究了玻璃尺寸对VG和TVIP绝缘性能的影响。结果表明，对于小于30 cm x 30 cm的较小玻璃窗区域，在0.1 Pa和1 Pa的真空压力下，TVIP与VG相比具有较低的U值。而在10 Pa的真空压力下，TVIP的U值较低。 TVIP在整个玻璃窗尺寸范围内获得了较低的U值。此外，使用TVIP可以减少VG中的边缘密封效果。此外，TVIP单位面积的材料成本比实验室规模的VG成本低三倍。当前的研究结果可以指导真空窗户的设计者和研究人员进一步提高基于TVIP的窗户的性能，以在市场上竞争VG。

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  • 来源
    《Solar Energy》 |2020年第3期|326-346|共21页
  • 作者

  • 作者单位

    Hokkaido Univ Div Human Environm Syst Fac Engn Kita Ku N13-W8 Sapporo Hokkaido 0608628 Japan;

    London South Bank Univ London Ctr Energy Engn Div Elect & Elect Engn Sch Engn Sch Engn 103 Borough Rd London SE1 0AA England;

    Hokkaido Univ Div Human Environm Syst Fac Engn Kita Ku N13-W8 Sapporo Hokkaido 0608628 Japan|Mansoura Univ Fac Engn Mech Power Engn Dept Mansoura 35516 Egypt;

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

    Vacuum glazing; Translucent vacuum insulation panel; Thermal performance; Energy conservation; Finite-volume modelling; Nearly zero energy buildings;

    机译：真空玻璃半透明真空隔热板;热性能;节能减排;有限体积建模;几乎零能耗的建筑;

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