Quantitative Study on the Life-Cycle Carbon Emissions of a Nearly Zero Energy Building in the Severe Cold Zones of China

Wang, Yangyang; Yang, Xinyan; Hou, Qingying; Jin, Tao; Dong, Jiankai

doi:10.3390/su14031448

Cited by 12 publications

(6 citation statements)

References 36 publications

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“…LCA determines the environmental load throughout the raw material acquisition, construction, operation and removal, to identify the most important factors affecting the environment and protect it [29]. However, there are differences in the boundary delineation of the building life cycle in different regions [12][13][14].…”

Section: Boundary Divisionmentioning

confidence: 99%

Building a Life Cycle Carbon Emission Estimation Model Based on an Early Design: 68 Case Studies from China

Guo,

Zhang,

Zhao

et al. 2024

Sustainability

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The building sector contributes to 50.9 percent of China’s carbon emissions. Due to the complexity of the assessment process, it is difficult to predict the entire life cycle carbon emissions of a building at the early stage of design. In this study, a whole-life carbon emission estimation model for the early stage of building design is developed based on comparison of the standard calculations and an analysis of stock cases. Firstly, the standard calculation methods in China, Japan and Europe were compared, and the boundary of the model was defined in three parts: production, construction and demolition and operation. Second, information on 68 examples of Chinese buildings was collected and divided into a training set and a test set at a ratio of 7:3. In the training set, the relationship between carbon emissions and the design parameters was searched, and a carbon emission estimation model applicable to different stages was constructed. Finally, the model was applied to the test set for validation. The results show that the calculation error of the model is within ±15%, and it can quickly estimate carbon emissions based on the design factors, which is helpful for carbon emission assessment work in the early stages of design.

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Section: Boundary Divisionmentioning

confidence: 99%

Building a Life Cycle Carbon Emission Estimation Model Based on an Early Design: 68 Case Studies from China

Guo,

Zhang,

Zhao

et al. 2024

Sustainability

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“…Life cycle assessment (LCA) is a methodology for evaluating the resource and environmental impacts of a product during the stages of raw material extraction, processing, manufacturing, packaging, transport, consumption, recycling, and final disposal (i.e., the entire "cradle-to-grave" life cycle of the product) [31]. Since its introduction in 1990, it has been recognized as an important tool for assessing the environmental impact of products [32]. The application of LCA theory to construction can not only quantitatively assess the degree of the environmental impact of buildings but also guide the selection of schemes, materials, construction methods, and operational strategies at the design stage [33].…”

Section: Life Cycle Assessmentmentioning

confidence: 99%

Using BIM and LCA to Calculate the Life Cycle Carbon Emissions of Inpatient Building: A Case Study in China

Zhao,

Guo,

Chen

et al. 2024

Sustainability

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Hospital buildings provide healthcare services at the costs of significant amounts of energy consumption and carbon emissions, further exacerbating the environmental load. Because of the limited research on the life cycle carbon emissions of Chinese hospitals, this study conducted a detailed carbon-accounting and comparative study. Firstly, BIM and LCA were used to quantify the carbon emissions of the inpatient building in each stage of the life cycle. Secondly, the differences in carbon emissions by stage were compared on the basis of 20 cases of public buildings. The results show that the whole-life carbon emissions of the inpatient building was 10,459.94 kgCO2/m2. The proportion of operational carbon emissions was 94.68%, with HVAC (52.57%), equipment (27.85%), and lighting (10.11%) being the main sources. Embodied carbon emissions accounted for 4.54%, and HRB400 steel and C30 concrete were the main sources of carbon emissions. Hospitals are second only to emporiums in terms of operational carbon intensity, being 1.71 and 1.41 times that of schools and office buildings, with inpatient buildings being 3 and 1.7 times that of medical complexes and outpatient buildings, respectively. The future sustainable development of hospital buildings should promote efficient building performance and good environmental quality, both in terms of energy efficiency and carbon reduction.

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“…These standards can be used to improve the active design of buildings by increasing the efficiency of facilities that use energy or reducing the amount of directly consumed primary energy by using new and renewable energy [18][19][20] . However, previous studies are mostly limited to calculating the life cycle GWP of buildings and do not present standards to assess its propriety [21][22][23][24] .…”

Section: Propriety Assessment Model For Life Cycle Operational Global...mentioning

confidence: 99%

Propriety assessment model for life cycle operational global warming potential of apartment buildings in Korea using energy efficiency and energy effective area data

Kim

Lim²,

Kim³

et al. 2023

Sci Rep

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In response to global warming, researchers worldwide are actively investigating various techniques and institutional frameworks to reduce the emission of greenhouse gases. Despite numerous life cycle assessment (LCA) studies indicating that global warming effects due to lifetime energy consumption are the greatest in the building operation stage, the absence of a standard global warming potential (GWP) report based on building energy usage makes it difficult to examine realistic GWP reduction directions. In South Korea, energy data for numerous buildings were collected through the Building Energy Efficiency Certification (BEEC) for several years, with data from apartment buildings receiving the most attention. GWP emissions were evaluated using the data through Green Standard for Energy and Environmental Design LCA. Here, we developed a model for apartment buildings to assess mutual propriety for GWP emissions (E) and energy effective area ratio (RE) during building operation to support the reduction of GWP emissions caused by lifetime operational energy consumption resulting from planning and design. We collected apartment BEEC data and used them to calculate the energy effective area ratio and GWP emissions of each building, which were then classified by energy use and source. Linear regression analysis was performed between RE and E for each classification, and the derived regression equation was developed as a GWP assessment model for apartments. The applicability of the proposed model was examined through a case study, which confirmed that the model can be used to determine design directions for reducing GWP emissions for every energy in apartments.

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Quantitative Study on the Life-Cycle Carbon Emissions of a Nearly Zero Energy Building in the Severe Cold Zones of China

Cited by 12 publications

References 36 publications

Building a Life Cycle Carbon Emission Estimation Model Based on an Early Design: 68 Case Studies from China

Building a Life Cycle Carbon Emission Estimation Model Based on an Early Design: 68 Case Studies from China

Using BIM and LCA to Calculate the Life Cycle Carbon Emissions of Inpatient Building: A Case Study in China

Propriety assessment model for life cycle operational global warming potential of apartment buildings in Korea using energy efficiency and energy effective area data

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