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首页> 外文期刊>Energy and Buildings >Mathematical development of an average method for estimating the reduction of the Heat Loss Coefficient of an energetically retrofitted occupied office building
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Mathematical development of an average method for estimating the reduction of the Heat Loss Coefficient of an energetically retrofitted occupied office building

机译:估算节能改造的办公大楼热量损失系数降低的平均方法的数学发展

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摘要

The performance gap between the design energy consumption of buildings and their real energy consumption has three main sources: the energy systems' performance, the users' behaviour and the buildings' envelope performance. The latter should be characterized under in-use conditions by estimating their in-use Heat Loss Coefficient (HLC). This work further develops an existing 'average method' by fully developing it from the energy conservation principle applied to a generic in-use building. Furthermore, the uncertainty sources are identified and limited through the mathematical development of the method. An innovative solution to the problematic of multizone buildings is also demonstrated, where HLC values should be calculated for different floors and then aggregated to obtain the entire building's HLC. Furthermore, all these can be done without the need of a detailed model of the building.The improved average method has been applied to an occupied, energetically monitored office building of the University of the Basque Country. The building was energetically rehabilitated during the summer of 2017. Therefore, the proposed method has been applied over the three winters prior to rehabilitation and then, to the winter after the rehabilitation. It has thus been possible to estimate a 28% reduction of the HLC for the post-retrofitted case, as compared to the pre-retrofitted one. (C) 2019 Elsevier B.V. All rights reserved.
机译:建筑物的设计能耗与其实际能耗之间的性能差距主要来自三个方面:能源系统的性能,用户的行为以及建筑物的围护性能。后者应在使用条件下通过估算其使用中的热损失系数(HLC)来表征。这项工作是通过将节能原理应用到一般在用建筑中来充分开发出来的,从而进一步发展了现有的“平均方法”。此外,不确定性来源通过该方法的数学发展得以识别和限制。还展示了解决多区域建筑物问题的创新解决方案,其中应针对不同楼层计算HLC值,然后将其汇总以获得整个建筑物的HLC。此外,所有这些都可以在不需要建筑物的详细模型的情况下完成。改进的平均法已应用于巴斯克地区大学的一栋由能源监控的办公楼。该建筑在2017年夏季进行了充分的修复。因此,该方法已在修复前的三个冬季以及修复后的冬季应用。因此,与改装前的情况相比,可以估计改装后的情况下HLC降低了28%。 (C)2019 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Energy and Buildings》 |2019年第6期|101-122|共22页
  • 作者单位

    Univ Basque Country UPV EHU, Dept Thermal Engn, ENEDI Res Grp, Alda Urquijo S-N, Bilbao 48013, Spain;

    Univ Basque Country UPV EHU, Dept Thermal Engn, ENEDI Res Grp, Alda Urquijo S-N, Bilbao 48013, Spain;

    Univ Basque Country UPV EHU, Dept Thermal Engn, ENEDI Res Grp, Alda Urquijo S-N, Bilbao 48013, Spain;

    Univ Basque Country UPV EHU, Dept Thermal Engn, ENEDI Res Grp, Alda Urquijo S-N, Bilbao 48013, Spain;

    Tecnalia, Sustainable Construct Div, Parque Tecnol Bizkaia,Edificio 700, Derio 48160, Spain;

    Univ Vigo, Sch Ind Engn, Dept Mech Engn Heat Engines & Fluid Mech, Vigo 36310, Spain;

  • 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

    Building envelope energy performance; Heat Loss Coefficient (HLC); Energy monitoring; Average method;

    机译:建筑围护结构的能量性能;热损失系数(HLC);能量监测;平均方法;

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