Thermal resistance of multi-functional panels in cold-climate regions

Awad, Hadia; Secchi, Lana; Gül, Mustafa; Ge, Hua; Knudson, Robert; Al‐Hussein, Mohamed

doi:10.1016/j.jobe.2020.101838

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…Improved building thermal insulation is one of the most important and increasingly popular solutions for energy saving and thermal balancing, as energy consumption of buildings accounts for about 30-40% of global energy [1,2]. As a result, commercial building insulation materials, such as organic polystyrenes, are receiving greater attention for use in buildings [3,4]. These insulation materials attracted more attention in the construction industry due to their appealing characteristics, such as being lightweight with excellent thermal insulation, good chemical resistance, and cheaper price [5].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Pyrolysis Kinetics Analysis of Glass Wool and XPS Insulation Materials Used in High-Rise Buildings

Hossain

Hassan

Saha

et al. 2023

Fire

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This study investigates the kinetics data of glass wool (GW) and extruded polystyrene (XPS) insulation materials used in cladding systems using a systematic framework. The determination of appropriate kinetic properties, such as pre-exponential factors, activation energy and reaction orders, is crucial for accurately modelling the full-scale fire performance of insulation materials. The primary objective of this research is to extract thermal and kinetics data of XPS and GW insulation materials employed in high-rise buildings. To obtain these properties, thermogravimetric analysis (TGA) is conducted at four different heating rates: 5, 10, 15 and 20 K/min. The TGA results serve as the basis for determining the kinetic properties using a combination of model-free and model-based methods. The outcomes of this study are expected to be highly beneficial in defining the pyrolysis reaction steps and extracting kinetics data for fire modelling of such insulation materials. This information will enhance the understanding of the fire behaviour and performance of these materials during fire incidents, aiding in developing more accurate fire models and improving fire safety strategies for cladding systems in high-rise buildings.

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Section: Introductionmentioning

confidence: 99%

Thermal and Pyrolysis Kinetics Analysis of Glass Wool and XPS Insulation Materials Used in High-Rise Buildings

Hossain

Hassan

Saha

et al. 2023

Fire

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“…Building panels used thermal and air control, as well as structural loads, have been explored by in simulation and field measurements. A multi-functional wood composite panel (MFP) using laminated OSB skins with two types of insulation cores (wood-fibre and XPS) was evaluated using hygrothermal models in different climatic regions in Canada [53,54] using WUFI Pro and field measurements. They found that the measured and simulated results were within 5%, and they did not observe a significant performance difference between the two panel types.…”

Section: Highly Insulated Enclosuresmentioning

confidence: 99%

Hygrothermal Analysis of Vacuum Insulation Panels in New and Retrofit Walls for Canada

Conley¹

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In Canada, residential buildings account for 16.7% of the total secondary energy end use and 12.7% of the total greenhouse gas emissions. Of these percentages, space heating and cooling account for about two-thirds of the total. As buildings are being built to higher standards, an airtight, resilient, and thermally efficient building enclosure could be used to meet the targeted energy efficiency in new and retrofit construction. The research program was aimed at the use of vacuum insulation panels (VIPs) encapsulated within expanded polystyrene (EPS) board to form an exterior insulation system for use in new and retrofit construction nationwide. The program utilized experimental and numerical methods to evaluate the insulation system under steady-state thermal and transient hygrothermal conditions.The experimental study was split into two categories: steady-state thermal conductivity testing and in-situ hygrothermal monitoring. The steady-state testing, performed with a guarded hot-box at Carleton University, found that a 200 mm by 300 mm (8" x 12") VIP in the exterior insulation with a 1:1 VIP to EPS insulated area ratio on a code-built wood-frame wall would have an effective thermal resistance of R-5.1 to R-6.3 m 2 K/W. It was observed after the in-situ monitoring, performed at CanmetENERGY-Ottawa, that the backer material for the VIP-insulated system did not affect the long-term potential for mould growth or moisture-related damage in the assembly.The numerical study was performed using Wärme Und Feuchte Instationär (WUFI) Pro 6.1 and WUFI 2D. The hygrothermal model was validated using the in-situ monitored data from 2016 to 2020 for Ottawa, CA. A methodology to model VIP insulated wall assemblies for building envelope retrofits was presented and performed in multiple cities across Canada. It was observed that masonry clad buildings (e.g., brick veneer) and wet climates (e.g., Vancouver and St. John's)

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