Life cycle energy consumption and greenhouse gas emissions of urban residential buildings in Guangzhou city

Zhan, Jinyan; Liu, Wei; Wu, Feng; Li, Zhihui; Wang, Chao

doi:10.1016/j.jclepro.2018.05.124

Cited by 68 publications

(24 citation statements)

References 41 publications

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“…According to Zhan et al [1], buildings in developed countries are responsible for 40% of the global energy use and for 33% of global greenhouse gas emissions. The highest energy consumption is ascribable to the heating, ventilation, and air conditioning (HVAC) systems [2].…”

Section: Introductionmentioning

confidence: 99%

CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels

et al. 2020

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Diffuse Ceiling Ventilation (DCV) is a promising concept to address internal air quality and thermal comfort requirements in contemporary buildings. Sound-absorbing perforated ceiling panels are common in office rooms and can be used as air diffusers without modifications. The optimization of such systems is not a trivial procedure, and numerical simulation can represent an important tool to carry out this task. Today, most of the numerical studies on DCV are performed using porous medium models and focus on the general system performance rather than on the optimization of the diffuser design. In previous studies, a CFD model was used to optimize the size and distribution of the ceiling perforation. In the study presented in this paper, the results of simulations conducted on a full-scale three-dimensional domain and the performance comparison between a continuous and non-continuous perforation distribution are given. The results show that the non-continuous diffuser design does not disturb the internal comfort and does not introduce a negative effect in the system performance. The different configurations lead to a different air distribution in the room, but in both cases, the velocity magnitude is always well below values leading to draft discomfort.

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Section: Introductionmentioning

confidence: 99%

CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels

et al. 2020

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“…Finally, 31% of the reviewed studies discussed the inherent limitations involving their research. Overall, no study performed all of the aforementioned evaluation methods, five studies included two of them [30,31,44,48,50], and ten studies did not consider performing any evaluation [27][28][29]41,42,[45][46][47]49,51].…”

Section: Discussionmentioning

confidence: 99%

“…It was found that eight studies considered processes associated with recycling potentials of building materials [27,[38][39][40]42,45,49,51]. They considered reusing materials such as biomass residues during the production stage [47][48][49]55] and on the construction site [39] as well as recycling building materials such as concrete, steel, and wood at the EOL stage [47][48][49]55]. Table 6 shows the amounts of energy saved at the production, construction, and EOL stages of a building life cycle, along with representing the percentage of energy saved throughout the entire building life cycle by recycling or reusing materials (detailed data on energy saving were available for five studies).…”

Section: Reuse and Recycling Potentialsmentioning

confidence: 99%

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Application of Life Cycle Energy Assessment in Residential Buildings: A Critical Review of Recent Trends

et al. 2020

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Residential buildings are responsible for a considerable portion of energy consumption and greenhouse gas emissions worldwide. Correspondingly, many attempts have been made across the world to minimize energy consumption in this sector via regulations and building codes. The focus of these regulations has mainly been on reducing operational energy use, whereas the impacts of buildings’ embodied energy are frequently excluded. In recent years, there has been a growing interest in analyzing the energy performance of buildings via a life cycle energy assessment (LCEA) approach. The increasing amount of research has however caused the issue of a variation in results presented by LCEA studies, in which apparently similar case studies exhibited different results. This paper aims to identify the main sources of variation in LCEA studies by critically analyzing 26 studies representing 86 cases in 12 countries. The findings indicate that the current trend of LCEA application in residential buildings suffers from significant inaccuracy accruing from incomplete definitions of the system boundary, in tandem with the lack of consensus on measurements of operational and embodied energies. The findings call for a comprehensive framework through which system boundary definition for calculations of embodied and operational energies can be standardized.

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“…e calculation of carbon emission is very complex. At present, the research on carbon emissions of buildings has made some achievements based on the Life Cycle Assessment (LCA) [6][7][8][9][10][11][12]. e LCA method is mainly used to calculate the carbon emissions of a product during the whole life cycle, including the raw materials, production, use, and demolition.…”

Section: Introductionmentioning

confidence: 99%

Estimation Method of Carbon Emissions in the Embodied Phase of Low Carbon Building

Liu

Sun

et al. 2020

Advances in Civil Engineering

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The carbon emission at the embodied phase is a complex combination, extending the life cycle of the building, defining the process of the embodied phase scientifically and finding out the direct and indirect carbon emission sources in the embodied phase. Building materials have the characteristics of “low carbon surface, hidden high carbon.” Emission factor calculation method is used to establish carbon emission model for building materials. Considering the effect of design optimization on the carbon emissions of the whole life cycle of the building, a low carbon level system is set up to optimize the target of low carbon design. In the construction phase, the carbon emission sources, emission boundary, and calculation model are determined according to the subdivisional engineering division method. Through a series of process decomposition, the total amount of carbon emissions at the embodied phase can be obtained, and the carbon emission quota list at the embodied phase can be compiled to provide technical support for the carbon trading mechanism of the building.

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Life cycle energy consumption and greenhouse gas emissions of urban residential buildings in Guangzhou city

Cited by 68 publications

References 41 publications

CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels

CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels

Application of Life Cycle Energy Assessment in Residential Buildings: A Critical Review of Recent Trends

Estimation Method of Carbon Emissions in the Embodied Phase of Low Carbon Building

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