Impact of air barriers application in LCA and LCC of naturally ventilated dwellings in mild climate regions

Cardoso, Vitor E.M.; Simões, M. Lurdes; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela; Mateus, Ricardo

doi:10.1016/j.enbuild.2022.112667

Cited by 3 publications

(1 citation statement)

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“…The savings in energy consumption are significant, but a full environmental impact also requires consideration of information on the building materials used [29,30]. A holistic approach to analyzing such buildings, taking into account their impact on the natural environment throughout their life cycle, is possible through the application of Life Cycle Assessment (LCA) methodology [31][32][33][34]. The LCA method allows a thorough assessment of the environmental footprint of a building, covering all stages from the extraction of raw materials, production of building materials, construction, and operation to demolition and recycling [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

Mazur,

Szlachetka,

Jeleniewicz

et al. 2024

Buildings

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The construction sector, a significant consumer of energy, possesses the potential to realize substantial environmental and economic advantages through the adoption of innovative technologies and design approaches. Notably, the Passive House standard, exemplified by energy-efficient single-family homes, emerges as a prominent solution. This study analyzes five external wall systems across multiple stages: (i) a literature review and examination of external wall techniques within the passive standard, utilizing the Passive House Database; (ii) a material and technological assessment of three wood-based and two masonry constructions; (iii) an in-depth thermal performance analysis of selected external partitions; and (iv) a Life Cycle Assessment (LCA) of the external wall systems. Our findings indicate that among the single-family homes built to the passive standard, 50.94% utilized timber constructions, while 34.21% employed masonry. Thermal analysis revealed that the masonry wall, EW-M-01, exhibited superior thermal efficiency with a heat transfer coefficient (U-value) of 0.0889 W/m2K. Meanwhile, the wooden wall, EW-T-01, led its category with a U-value of 0.1000 W/m2K. The LCA highlighted that the wooden wall EW-T-02 presented the lowest integrated non-renewable energy demand (PENTR) at 425.70 MJ/kg and the most favorable Global Warming Potential (GWP), with a reduction of 55.51 kg CO2e. Conversely, the masonry wall EW-M-01 recorded the highest energy demand and CO2e emissions, at 780.96 MJ/kg and 90.59 kg CO2e, respectively. Water consumption was lowest for the EW-T-02 wooden wall (0.08 m3) and highest for the EW-M-02 masonry wall (0.19 m3). Conclusively, our analysis of passive house external walls demonstrates that wood-based systems offer superior performance in terms of materials, thermal efficiency, and LCA indicators, positioning them as the preferred option for sustainable passive construction.

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Section: Introductionmentioning

confidence: 99%

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

Mazur,

Szlachetka,

Jeleniewicz

et al. 2024

Buildings

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Life cycle sustainability assessment applied in the built environment

Figueiredo,

Hammad,

Haddad

2024

Materials Selection for Sustainability in the Built Environment

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Modern Thermal Energy Storage Systems Dedicated to Autonomous Buildings

2023

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This paper presents a detailed analysis of the research into modern thermal energy storage systems dedicated to autonomous buildings. The paper systematises the current state of knowledge concerning thermal energy storage systems and their use of either phase change materials or sorption systems; it notes their benefits, drawbacks, application options, and potential directions for future development. The rapid proliferation of studies on installation systems, new composites, and phase change materials requires a systematisation of the subject related to short- and long-term thermal energy storage in building structures. This paper focuses on assessing the validity of the current improved thermal energy storage solutions for buildings with very high energy efficiency standards and buildings that are energy-independent. The paper presents the current results of the energy and economic analyses of the use of heat storage systems in buildings. This paper shows the optimal heat storage systems for autonomous buildings. Moreover, it also shows other potential ways to develop systems and composites capable of storing heat in autonomous buildings.

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Impact of air barriers application in LCA and LCC of naturally ventilated dwellings in mild climate regions

Cited by 3 publications

References 46 publications

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

Life cycle sustainability assessment applied in the built environment

Modern Thermal Energy Storage Systems Dedicated to Autonomous Buildings

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