期刊
ENERGY AND BUILDINGS
卷 72, 期 -, 页码 441-456出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2014.01.004
关键词
Building energy; Building envelopes; Thermal insulation
资金
- Oak Ridge National Laboratory (ORNL) through the Oak Ridge Institute for Science and Education (ORISE)
- Frunhover CSE
The main objective of this study is to indentify advanced wall frame assemblies applicable for residential and small commercial buildings, that have or could reach R-values larger than R-SI -3.5 m(2) K/W (U-value lower from 0.29). An extensive literature review of existing and past practices is used as the main vehicle to analyze: framing and wall insulation methods, architectural details with focus on minimizing thermal bridges, structural adequacy aspects with respect to gravity and lateral loads, and ability to provide fire and sound breaks. In this paper a wide selection of advance framing wall assemblies is discussed in details with main focus on construction methods, architectural details with minimized thermal bridges, and structural (strength) concerns. High performance wall technologies of consideration include: double walls, Larsen truss walls, optimum or advanced framing walls, walls using distance spacers (furring) and walls made of wood-based composites. Since wood framing for wall applications is mostly used in North America, Scandinavia, and Central Europe, this study is focused on research studies from these regions. In addition, field test studies are presented discussing an application of high R-value of new and retrofitted wall assemblies in actual test houses that have been constructed and being currently monitored. (C) 2014 Elsevier B.V. All rights reserved.
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