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首页> 外文期刊>Building and Environment >Thermal behaviour of a green roof containing insulation cork board. An experimental characterization using a bioclimatic chamber
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Thermal behaviour of a green roof containing insulation cork board. An experimental characterization using a bioclimatic chamber

机译：含有绝缘软木板的绿色屋顶的热行为。使用生物素腔的实验表征

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摘要

Green roof technology is increasingly being used to improve the energy and environmental performance of buildings. However, the description of the thermal behaviour of green roofs is very complex since it depends on several variables and relies on intricate phenomena.In this work the authors characterize a green roof system that replaces the conventional drainage and water storage polyethylene membranes with insulation cork boards (ICB). To enable the experimental characterization of this system, a double walk-in bioclimatic chamber was designed and built to recreate indoor and outdoor environmental conditions. Winter and summer environments with steady and unsteady conditions in both dry and wet states were simulated. Thermocouples and heat flux sensors were used to collect data over time from the different layers of the green roof prototypes.Measurements were first performed on a concrete slab insulated with ICB to assess the contribution of the latter to the thermal performance of the system. The effect on the heat transfer was further evaluated for systems of increasing complexity, containing first a substrate layer and then vegetation. It was noted that the substrate and vegetation layers improved the thermal insulation, and reduced heat fluxes and the thermal amplitude within the system. The vegetation layer was found to be of key importance to the overall performance of the green roof. It was also found that ICB and the substrate layers lose part of their insulation capacity when the system was wetted, although it was fully restored in the ICB layer within a few hours.
机译：绿色屋顶技术越来越多地用于提高建筑物的能量和环境性能。然而，绿色屋顶的热行为的描述非常复杂，因为它取决于几个变量并依赖于复杂的现象。在这项工作中，作者表征了一种绿色屋顶系统，用绝缘软木板取代传统的排水和蓄水聚乙烯膜。 （ICB）。为了实现该系统的实验表征，设计了一个双人走式生物融合室，并建造并建造了室内和室外环境条件。模拟冬季和夏季环境在干燥和潮湿状态下具有稳定和不稳定的条件。热电偶和热通量传感器用于从绿色屋顶原型的不同层收集数据。首先在用ICB绝缘的混凝土板上进行测量，以评估后者对系统的热性能的贡献。进一步评价对传热的影响，以增加复杂性的系统，含有第一底物层，然后植被。注意，基板和植被层改善了保温，并降低了系统内的热量和热幅度。发现植被层对绿色屋顶的整体性能具有重要性。还发现，当系统被润湿时，ICB和基板层丢失了它们的部分绝缘容量，尽管在几小时内在ICB层中完全恢复。

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  • 来源
    《Building and Environment》 |2019年第8期|106179.1-106179.11|共11页
  • 作者

    Almeida Ricardo; Simoes Nuno; Tadeu Antonio; Palha Paulo; Almeida Joao;

  • 作者单位

    ITeCons Inst Res & Technol Dev Construct Energy E Rua Pedro Hispano P-3030289 Coimbra Portugal|Univ Coimbra Sustainable Energy Syst MIT Portugal Program Coimbra Portugal;

    ITeCons Inst Res & Technol Dev Construct Energy E Rua Pedro Hispano P-3030289 Coimbra Portugal|Univ Coimbra FCTUC ADAI LAETA Dept Civil Engn Polo 2 Rua Luis Reis Santos P-3030788 Coimbra Portugal;

    ITeCons Inst Res & Technol Dev Construct Energy E Rua Pedro Hispano P-3030289 Coimbra Portugal|Univ Coimbra FCTUC ADAI LAETA Dept Civil Engn Polo 2 Rua Luis Reis Santos P-3030788 Coimbra Portugal;

    NEOTURF Espacos Verdes Rua Amoreiras 155 P-4460227 Senhora Da Hora Portugal;

    ITeCons Inst Res & Technol Dev Construct Energy E Rua Pedro Hispano P-3030289 Coimbra Portugal|Univ Coimbra Dept Chem Chem Ctr Rua Larga P-3004535 Coimbra Portugal;

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  • 正文语种 eng
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  • 关键词

    Green roof; Insulation cork board; Thermal behaviour; Bioclimatic chamber; Winter and summer simulations;

    机译：绿色屋顶;绝缘软木板;热行为;生物融合室;冬季和夏季模拟;

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