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Airtightness and Air Leakage Causes of Wooden Houses in Korea

https://research.thinkwood.com/en/permalink/catalogue1643
Year of Publication
2016
Topic
Energy Performance
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Kim, Se-Jong
Chang, Yoon-Seong
Park, Joo-Saeng
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Energy Performance
Keywords
Korea
Airtightness
Air Leakage
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3367-3372
Summary
The airtightness of building must be measured for the evaluation of building energy performance. To make up the reference airtightness value of wooden houses built in Korea, blower door test was carried out in the 36 houses. And, during the test, the causes of air leakage were inspected simultaneously. The result showed that the...
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Illustrated Guide R30+ Effective Vaulted & Flat Roofs

https://research.thinkwood.com/en/permalink/catalogue2348
Year of Publication
2019
Topic
Moisture
Energy Performance
Design and Systems
Material
Light Frame (Lumber+Panels)
Application
Roofs
Author
Marleau, Christopher
Higgins, James
Ricketts, Lorne
Roppel, Patrick
Publisher
BC Housing Research Centre
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Roofs
Topic
Moisture
Energy Performance
Design and Systems
Keywords
Vaulted Roofs
Water-Shedding Roofs
Flat Waterproof Membrane Roofs
Thermal Performance
Moisture Management
Air Leakage
Durability
Language
English
Research Status
Complete
Summary
This Illustrated Guide consolidates information on vaulted water-shedding roofs and flat waterproof membrane roofs that are capable of meeting R-30 or greater effective thermal performance when used on low- and mid-rise wood-frame buildings. The guide is intended to be an industry, utility, and government resource with respect to meeting this thermal performance level, while not compromising other aspects of building enclosure performance, including moisture management, air leakage, and durability.
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Modeling the Impact of Assembly Tolerances Regarding Air Leaks on the Energy Efficiency and Durability of a Cross-Laminated Timber Structure

https://research.thinkwood.com/en/permalink/catalogue2365
Year of Publication
2019
Topic
Energy Performance
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
General Application
Author
Martin, Ulysse
Blanchet, Pierre
Potvin, André
Publisher
North Carolina State University
Year of Publication
2019
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
General Application
Topic
Energy Performance
Design and Systems
Keywords
Energy Efficiency
Air Leakage
HAM Analysis
Durability Assessment
Language
English
Research Status
Complete
Series
BioResources
Summary
Air leaks have a considerable impact on the energy load and durability of buildings, particularly in cold climates. In wood construction using cross-laminated timber (CLT), air leaks are most likely to be concentrated at the joints between panels and other elements. This study used simulations of heat, air, and moisture transfers through a gap between two CLT panels causing air leakage in winter conditions under a cold climate. A real leakage occurrence was sized to validate the simulations. The aim of this work was to assess the impact on the energy loads and the durability of an air leak, as either infiltration or exfiltration, for different gap widths and relative humidity levels. The results showed that infiltrations had a greater impact on the energy load than exfiltrations but did not pose a threat to the durability, as opposed to exfiltrations. Gap sizes in CLT may vary, but the effect on the energy load was sensitive to the leakage path in the rest of the wall. As expected, a combination of winter exfiltration and a high level of interior relative humidity was particularly detrimental.
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