Hygrothermal performance of bio-based insulation materials
Hygrothermal performance of bio-based insulation materials
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DOI：
10.1680/coma.12.00031
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发表时间：
2013-08-01
影响因子：
1.5
通讯作者：
De Wilde, Pieter
中科院分区：
文献类型：
--
作者：
Lawrence, Mike;Shea, Andy;De Wilde, Pieter
生物基绝缘材料有可能为减少全球建筑业的全球变暖潜力做出重大贡献。他们以两种方式做出贡献。首先，它们提供了减少建筑结构中的隐含能量的机会。他们这样做是因为他们是可再生和可回收的。基于植物的隔热材料还通过光合作用隔离二氧化碳，在建筑物的生命周期内密封大气中的二氧化碳。其次，它们能够以更多的方式减少建筑物的使用中的能源消耗，而不仅仅是减少能源传输。它们具有缓冲热量和水分的能力，这在动态情况下最为明显。本文讨论了生物基绝缘材料的湿热性能，检查与其蒸汽活性相关的湿热效应。这些材料提供的增量性能在建筑法规中是不允许的，也不容易在许多商业可用的建筑物理模型中得到解释。本文讨论了这一点的原因，并确定需要考虑到生物基绝缘材料的瞬态性能，因为这将更好地反映他们的实际贡献的建筑物的能源性能。
Bio-based insulation materials have the potential to make a significant contribution to the reduction in the global warming potential of the construction industry world-wide. They contribute in two ways. First they provide the opportunity to reduce the embodied energy in the fabric of buildings. They do this because they are renewable and recyclable. Plant-based insulation materials also sequester carbon dioxide through photosynthesis, sealing up atmospheric carbon dioxide for the life-time of the building. Second they are able to reduce the in-use energy consumption of buildings in more ways than by simply reducing energy transmission. They have the ability to buffer heat and moisture, which is most evident in dynamic situations. This paper discusses the hygrothermal performance of bio-based insulation materials, examining the hygrothermal effects associated with their vapour activity. The incremental performance offered by these materials is not allowed for in building regulations, nor is it readily accounted for in many commercially available building physics models. The paper discusses the reasons for this and identifies the need for the transient performance of bio-based insulation materials to be taken into account, because this will better reflect their actual contribution to the energy performance of a building.