Abstract
Throughout the life cycle, the buildings emit a great deal of carbon dioxide into the atmosphere, which directly leads to aggravation in the greenhouse effect and becomes a severe threat to the environment and humans. Researchers have made numerous efforts to accurately calculate emissions to reduce the life cycle carbon emissions of residential buildings. Nevertheless, there are still difficulties in quickly estimating carbon emissions in the design stage without specific data. To fill this gap, the study, based on Life Cycle Assessment (LCA) and Building Information Modeling (BIM), proposed a quick method for estimating Building’s Life Cycle Carbon Emissions (BLCCE). Taking a hospital building in Chuzhou City, Anhui Province, China as an example, it tested its possibility to estimate BLCCE. The results manifested that: 1) the BLCCE of the project is 40,083.56 tCO2-eq, and the carbon emissions per square meter per year are 119.91 kgCO2-eq/(m2·y); 2) the stage of construction, operational and demolition account for 7.90%, 91.31%, and 0.79% of BLCCE, respectively; 3) the annual carbon emissions per square meter of hospital are apparently higher than that of villa, residence, and office building, due to larger service population, longer daily operation time, and stricter patient comfort requirements. Considering the lack of BLCCE research in Chinese hospitals, this case study will provide a valuable reference for the estimated BLCCE of hospital building.
Highlights
The global warming effect has attracted increasing attention all over the world (Gustavsson, Joelsson, & Sathre, 2010), among which carbon emissions are considered to be one of the underlying causes of global warming
Mingguang People’s Hospital Building is located in Chuzhou City, Anhui Province, China. It is a public building supported by a reinforced concrete frame structure system with a gross floor area (GFA) of 6367 m2 and a base area of 1703 m2
Combined with Building Information Model (BIM) and Life Cycle Assessment (LCA), this paper proposed an estimation of building’s life cycle carbon emissions (BLCCE) method, which is rapidness and convenience
Summary
The global warming effect has attracted increasing attention all over the world (Gustavsson, Joelsson, & Sathre, 2010), among which carbon emissions are considered to be one of the underlying causes of global warming. The construction industry makes up 30% - 40% of all industries’ carbon emissions (Baek, Tae, Kim, & Shin, 2016; Cabeza, Rincón, Vilariño, Pérez, & Castell, 2014; Cubi, Doluweera, & Bergerson, 2015). For the sake of slashing building’s life cycle carbon emissions (BLCCE), BLCCE calculation needs to be addressed first (Lee, Tae, & Kim, 2018). Many scholars used BIM and LCA to calculate building carbon emissions, and have achieved immense advance (Gan et al, 2018; Peng, 2016; Yang, Hu, Wu, & Zhao, 2018). The purpose of calculating carbon emissions is to reduce carbon emissions, while carbon emission reduction needs to adopt abatement measures at the design phase of the building (Häkkinen, Kuittinen, Ruuska, & Jung, 2015; Zhu, Chew, Lv, & Wu, 2013). For the engineering design phase with limited data, it is still problematic to estimate the BLCCE
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