A life cycle study of insulation in a case study building with a focus on the effect of the national energy profile

Moradibistouni, Milad; Vale, Brenda; Isaacs, Nigel

doi:10.1016/j.jobe.2021.103178

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…For a residential building, energy is mainly used for heating in winter and cooling in summer. According to Moradibistouni et al [143], heating is the principal energy consumption in the houses in New Zealand and in Australia, accounting for nearly a third of the total energy use. The burning of fossil fuels and the usage of electricity and water in buildings account for the majority of carbon emissions [144].…”

Section: Thermal Performance and Energy Efficiency Of Cfs Structuresmentioning

confidence: 99%

“…Moreover, they indicated that if more insulation materials are utilized to lower the need for operational energy, the trade-off between embodied and operational energy must be taken into account [18,178]. Moradibistouni et al [143] used a life cycle assessment approach to find the most effective level of insulation with a focus on the effect of the national energy profile in New Zealand. Some researchers investigated the optimization of insulation layers, such as finding the optimal thickness of insulation materials [143,175], making use of new insulation materials [48], or innovative insulation systems [179].…”

Section: Thermal Bridge Mitigation Strategiesmentioning

confidence: 99%

“…Moradibistouni et al [143] used a life cycle assessment approach to find the most effective level of insulation with a focus on the effect of the national energy profile in New Zealand. Some researchers investigated the optimization of insulation layers, such as finding the optimal thickness of insulation materials [143,175], making use of new insulation materials [48], or innovative insulation systems [179].…”

Section: Thermal Bridge Mitigation Strategiesmentioning

confidence: 99%

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A Critical Review on Optimization of Cold-Formed Steel Members for Better Structural and Thermal Performances

et al. 2022

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The construction and building sectors are currently responsible globally for a significant share of the total energy consumption and energy-related carbon dioxide emissions. The use of Modern Methods of Construction can help reduce this, one example being the use of cold-formed steel (CFS) construction. CFS channel sections have inherent advantages, such as their high strength-to-weight ratio and excellent potential for recycling and reusing. CFS members can be rolled into different cross-sectional shapes and optimizing these shapes can further improve their load-bearing capacities, resulting in a more economical and efficient building solution. Conversely, the high thermal conductivity of steel can lead to thermal bridges, which can significantly reduce the building’s thermal performance and energy efficiency. Hence, it is also essential to consider the thermal energy performance of the CFS structures. This paper reviews the existing studies on the structural optimization of CFS sections and the thermal performance of such CFS structures. In total, over 160 articles were critically reviewed. The methodologies used in the existing literature for optimizing CFS members for both structural and thermal performances have been summarized and presented systematically. Research gaps from the existing body of knowledge have been identified, providing guidelines for future research.

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Section: Thermal Performance and Energy Efficiency Of Cfs Structuresmentioning

confidence: 99%

Section: Thermal Bridge Mitigation Strategiesmentioning

confidence: 99%

Section: Thermal Bridge Mitigation Strategiesmentioning

confidence: 99%

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A Critical Review on Optimization of Cold-Formed Steel Members for Better Structural and Thermal Performances

et al. 2022

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“…The evaluation of the optimal thermal transmittance of the building envelope thus has a pivotal role in the lifecycle primary energy saving. In such a respect, recently, this goal has been addressed in various studies [18][19][20][21][22][23][24][25], by optimizing thermal insulation thickness of walls with regard to its influence on the lifecycle assessment. Among them, some research works addressed the energy calculation through simplified simulation tools adopting a steady-state process [18][19][20], while few used a more accurate method taking into consideration the building's morphology, transient behaviour and operation settings [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Optimal Balance between Heating, Cooling and Environmental Impacts: A Method for Appropriate Assessment of Building Envelope’s U-Value

et al. 2022

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In Europe, the recent application of regulations oriented to zero-energy buildings and climate neutrality in 2050 has led to a reduction in energy consumption for heating and cooling in the construction sector. The thermal insulation of the building envelope plays a key role in this process and the requirements about the maximum allowable thermal transmittance are defined by country-specific guidelines. Typically, high insulation values provide low energy consumption for heating; however, they may also entail a risk of overheating in summer period and thus negatively affect the overall performance of the building. In addition, the embodied energy and related emissions caused by the manufacturing and transportation processes of thermal insulation cannot be further neglected in the evaluation of the best optimal solution. Therefore, this paper aims to evaluate the influence in terms of embodied and operational energy of various walls’ thermal insulation thicknesses on residential buildings in Europe. To this end, the EnergyPlus engine was used for the energy simulation within the Ladybug and Honeybee tools, by parametrically conducting multiple iterations; 53 variations of external wall U-value, considering high- and low-thermal-mass scenarios, were simulated for 100 representative cities of the European context, using a typical multifamily building as a reference. The results demonstrate that massive walls generally perform better than lightweight structures and the best solution in terms of energy varies according to each climate. Accordingly, the wall’s thermal transmittance for the samples of Oslo, Bordeaux, Rome and Almeria representative of the Continental, oceanic temperate, Mediterranean, and hot, semi-arid climates were, respectively: 0.12, 0.26, 0.42, and 0.64 W/m2K. The optimal solutions are graphically reported on the map of Europe according to specific climatic features, providing a guidance for new constructions and building retrofit.

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“…A sustainable circular economy based on the consistent protection of environmental components using as few nonrenewable natural resources and hazardous substances as possible, leading to improvement in population health is the significant vision too [3]. Buildings consume a significant share of global energy, mostly from non-renewable sources, and emit significant amounts of CO2, which is not in line with the goals of sustainable development, therefore one of the main changes needed is to make buildings more energy efficient by isolating them from the environment [4]. In the past decades, life cycle assessment (LCA) has been increasingly applied to the building sector [1].…”

Section: Introductionmentioning

confidence: 99%

Life cycle assessment of residential buildings and scenarios for prolonged life span

Blichova

Vilcekova

Burdova

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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This study deals with determination of the share of building materials impacts in whole building life cycle considering longer life span. Our aim is to investigate differences between widely used 50-year life span compared to100 and 150 years. Purpose of this study is thinking about aging residential building fond in Slovakia and their future. It is needs to be said that highest peak in building development occurred between 1955 till 1983 when prefabricated residential buildings were mostly made. These buildings take almost 38% share of all buildings finished till 2020 and youngest of them are almost 40 years old in 2022. It is needed to re-evaluate 50-year life span in all cases. Based on this situation this work focuses on residential buildings located in Slovak republic. For the assessment One Click LCA software was used, boundaries were set for cradle to grave. The functional unit was chosen 1 m2 of the total floor area in duration of determined life span. Results are presented for modelled scenarios which investigates changes in global warming potential impact category.

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A life cycle study of insulation in a case study building with a focus on the effect of the national energy profile

Cited by 8 publications

References 19 publications

A Critical Review on Optimization of Cold-Formed Steel Members for Better Structural and Thermal Performances

A Critical Review on Optimization of Cold-Formed Steel Members for Better Structural and Thermal Performances

Optimal Balance between Heating, Cooling and Environmental Impacts: A Method for Appropriate Assessment of Building Envelope’s U-Value

Life cycle assessment of residential buildings and scenarios for prolonged life span

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