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首页> 外文期刊>Building and Environment >Factors influencing envelope airtightness of lightweight timber-frame houses built in the Czech Republic in the period of 2006-2019
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Factors influencing envelope airtightness of lightweight timber-frame houses built in the Czech Republic in the period of 2006-2019

机译：2006 - 2019年期间，影响捷克共和国内置轻质木材框架房屋信封气密的因素

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摘要

In this research, 558 family timber-frame houses newly built in the period of 2006?2019 in the Czech Republic were assessed in terms of their airtightness. The air leakage through the building envelope was evaluated via the ?blower-door? method, and the most important parameters affecting the airtightness of these types of buildings were simultaneously evaluated. In low-energy houses with natural ventilation, the mean air change rate at a pressure difference of 50 Pa (ACH50) was ascertained as 1.03 h-1, and in low-energy houses with mechanical ventilation and heat recovery, the average ACH50 value was 1.07 h-1. Passive houses had an average ACH50 value of 0.44 h-1. The positive effects of mandatory regulations and government subsidies were demonstrated. The ACH50 values improved with each new year of construction; this trend was especially evident for low-energy houses. A very significant influence was also found from the company conducting the construction and the construction technology being employed; an on-site construction method achieved lower ACH50 values than a method based on panel construction with a higher degree of prefabrication. The ACH50 values were also affected by the presence of a chimney and/or type of the interior airtight vapour barrier. In particular, a brick chimney body impaired the ACH50 values. Timber-frame houses with a vapour-permeable air barrier systems generally had smaller air leakage rate values than houses with a polyethylene vapour barrier. However, neither the internal building volume nor the envelope area were found to be significant parameters in terms of airtightness for the lightweight timber-frame residential houses.
机译：在本研究中，在2006年的558家系列木材框架房屋，在捷克共和国的2019年在捷克共和国进行了评估。通过建筑物包络的空气泄漏通过α吹风机进行评估？同时评估了影响这些类型建筑物的气密性的最重要的参数。在具有自然通气的低能量房屋中，在50Pa（Ach50）的压力差下的平均空气变化率为1.03 H-1，并且在具有机械通气和热回收的低能量室中，平均Ach50值是1.07 H-1。被动房屋的平均ACH50值为0.44 H-1。展示了强制性规定和政府补贴的积极影响。 Ach50值随着每个新的建设而改善;低能量房屋尤其明显。在开展建筑和施工技术中也发现了一个非常重要的影响力;现场施工方法达到了高于基于面板结构的方法，具有较高的预制率。 ACH50值也受到烟囱和/或内部气密蒸汽屏障的存在的影响。特别是，砖烟囱体损害了ACH50值。具有蒸气性空气阻挡系统的木框架房屋通常具有比具有聚乙烯蒸汽屏障的容纳较小的空气泄漏率值。然而，在轻质木材框架住宅房屋的气密性方面，发现内部建筑体积和包络区域都没有被发现是重要的参数。

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  • 来源
    《Building and Environment》 |2021年第5期|107687.1-107687.9|共9页
  • 作者

    Bohm Martin; Berankova Jitka; Brich Jiri; Polasek Marek; Srba Jaromir; Nemcova Dana; Cerny Robert;

  • 作者单位

    Czech Tech Univ Fac Civil Engn Dept Mat Engn & Chem Thakurova 7 Prague 16629 6 Czech Republic;

    SOE Timber Res & Dev Inst Prague Na Florenci 7-9 Prague 11171 1 Czech Republic;

    SOE Timber Res & Dev Inst Prague Na Florenci 7-9 Prague 11171 1 Czech Republic;

    SOE Timber Res & Dev Inst Prague Na Florenci 7-9 Prague 11171 1 Czech Republic;

    SOE Timber Res & Dev Inst Prague Na Florenci 7-9 Prague 11171 1 Czech Republic;

    Czech Tech Univ Fac Civil Engn Dept Mat Engn & Chem Thakurova 7 Prague 16629 6 Czech Republic;

    Czech Tech Univ Fac Civil Engn Dept Mat Engn & Chem Thakurova 7 Prague 16629 6 Czech Republic;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Airtightness; Air change rate; Timber-frame houses; Residential building; Blower-door;

    机译：气密;空气变化率;木材框架房屋;住宅建筑;鼓风机门;

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