Review of bio-based wood fiber insulation for building envelopes: Characteristics and performance assessment

IF 6.6 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Liam O’Brien , Ling Li , Wilhelm Friess , Jacob Snow , Benjamin Herzog , Shane O’Neill
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Abstract

A sustainable future in the built environment is contingent on the reduction of energy consumption. Thermal insulation has been widely used as a means of reducing the operational energy usage of buildings, however current products dominating the market are non-renewable, fossil-based, and utilize energy intensive production methods. Wood fiber insulation (WFI), the most successfully commercialized natural insulation product, has been produced in European nations since the late 1900′s, however spread to other regions did not occur until recently. Limited global use has led to a narrow body of research that focuses largely on material development and use in cold climates. The investigation of WFI in building envelopes is insufficient, especially regarding its biological and hygroscopic nature, as well as its impact on the building envelope’s performance. This paper aims to review WFI’s hygrothermal and energetic performance. First, material property evaluation, such as thermal conductivity and moisture sorption, provides insight into the ability of WFI to be used in buildings while determining if there are special considerations when being used. An assessment of WFI within wall and roof assemblies allows for investigation under varying climatic conditions and within building systems. Finally, whole building monitoring allows for an understanding of how WFI acts within the building envelope with human occupation. Findings reveal WFI provides comparable thermal conductivity to conventional insulation materials, while being biologically derived and vapor open. Further research is required to harmonize testing methodologies, production processes, and additives used to better the impacts these have on WFI’s properties.
建筑围护结构用生物基木纤维保温材料的研究进展:特点与性能评价
建筑环境的可持续未来取决于能源消耗的减少。保温作为一种减少建筑运行能耗的手段已经被广泛使用,然而目前主导市场的产品是不可再生的,化石基的,并且利用能源密集型的生产方法。木纤维绝热材料(WFI)是最成功的商业化天然绝热材料,自20世纪后期在欧洲国家生产,但直到最近才传播到其他地区。有限的全球使用导致研究范围狭窄,主要集中在材料开发和在寒冷气候下的使用上。对WFI在建筑围护结构中的应用研究较少,特别是对WFI的生物吸湿性及其对围护结构性能的影响研究较少。本文旨在对WFI的热湿性能和能量性能进行综述。首先,材料性能评估,如导热性和吸湿性,可以深入了解WFI在建筑中的使用能力,同时确定在使用时是否有特殊考虑。对墙壁和屋顶组件内WFI的评估允许在不同的气候条件下和建筑系统内进行调查。最后,整个建筑的监测允许了解WFI如何在人类居住的建筑围护结构内发挥作用。研究结果表明,WFI具有与传统绝缘材料相当的导热性,同时具有生物衍生性和蒸汽开放性。需要进一步的研究来协调测试方法、生产工艺和添加剂,以改善这些对WFI性能的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Energy and Buildings
Energy and Buildings 工程技术-工程:土木
CiteScore
12.70
自引率
11.90%
发文量
863
审稿时长
38 days
期刊介绍: An international journal devoted to investigations of energy use and efficiency in buildings Energy and Buildings is an international journal publishing articles with explicit links to energy use in buildings. The aim is to present new research results, and new proven practice aimed at reducing the energy needs of a building and improving indoor environment quality.
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