Assessment Model for Energy Consumption and Greenhouse Gas Emissions during Building Construction

Hong, Taehoon; Ji, Changyoon; Jang, Min‐Ho; Park, Hyoseon

doi:10.1061/(asce)me.1943-5479.0000199

Cited by 101 publications

(45 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among the different construction operations, earthmoving, concerting, and lifting operations have been identified as the primary contributors to carbon emissions in the construction phase [5,103,104]. Guggemos and Horvath reported that these three operations account for 83% of the overall construction phase emissions of the structure studied in their work [104,113].…”

Section: Construction Optimization Strategiesmentioning

confidence: 99%

“…While the use of specialized methods may alleviate the issues related to the effects of project-specific conditions on the emissions, another common drawback that remains to be dealt with is the reliance of emission models on deterministic industry-average or country-average inventory data, which may not precisely represent the actual specifications and condition of the equipment used in a particular project [5,97,143]. Furthermore, the operation parameters including duration of activities, and thus duration of operation of equipment, are, in practice, subject to uncertainty [143].…”

Section: Accounting For Uncertainty and Site-specific Conditionsmentioning

confidence: 99%

“…However, the need for the availability of actual site data such as amount of fuel, electricity, water and various materials used by different contractors is a limiting factor for such methods, rendering them incapable of predicting carbon emissions before the completion of the activity. To address this issue, Hong et al [5] proposed a model to assess the energy consumption and carbon emissions of the construction phase by using the available information on type and energy efficiency of equipment, amount of materials used and characteristics of the building project and construction site.…”

Section: Cradle To Service Embodied Carbon-impact Of Construction Opementioning

confidence: 99%

“…To facilitate comparison and reporting, an aggregate measure, known as carbon equivalent, is usually used to quantify and report the overall global warming impact caused by various greenhouse gases emitted during a process. Carbon equivalent is estimated by converting the quantity of various GHGs to an equivalent quantity of carbon dioxide that leads to the same global warming impact [5]. Throughout this paper, the term "carbon emissions" is used to refer to "carbon equivalent emissions".…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Estimation and Minimization of Embodied Carbon of Buildings: A Review

2017

View full text Add to dashboard Cite

Building and construction is responsible for up to 30% of annual global greenhouse gas (GHG) emissions, commonly reported in carbon equivalent unit. Carbon emissions are incurred in all stages of a building's life cycle and are generally categorised into operating carbon and embodied carbon, each making varying contributions to the life cycle carbon depending on the building's characteristics. With recent advances in reducing the operating carbon of buildings, the available literature indicates a clear shift in attention towards investigating strategies to minimize embodied carbon. However, minimizing the embodied carbon of buildings is challenging and requires evaluating the effects of embodied carbon reduction strategies on the emissions incurred in different life cycle phases, as well as the operating carbon of the building. In this paper, the available literature on strategies for reducing the embodied carbon of buildings, as well as methods for estimating the embodied carbon of buildings, is reviewed and the strengths and weaknesses of each method are highlighted.

show abstract

Section: Construction Optimization Strategiesmentioning

confidence: 99%

Section: Accounting For Uncertainty and Site-specific Conditionsmentioning

confidence: 99%

Section: Cradle To Service Embodied Carbon-impact Of Construction Opementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation and Minimization of Embodied Carbon of Buildings: A Review

2017

View full text Add to dashboard Cite

show abstract

“…Results of this study showed considerable differences between the GHG emissions associated with construction of alternative wood, steel and concrete structural assemblies and highlighted the construction of the concrete assemblies as the highest GHG emitter [6]. A number of studies have also focused on estimating the carbon emissions incurred in the construction phase and comparing the effects of different construction processes on the latter by collecting the fuel and electricity consumption data of different equipment functioning on the construction site [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Embodied Carbon Associated with Alternative Structural Systems

Nadoushani

Akbarnezhad

2015

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

View full text Add to dashboard Cite

The structural system of a building is usually selected by comparing the structural performance, costs and ease of construction of different alternative systems. Other sustainability criteria including carbon footprint have been overlooked traditionally in making such a decision. This paper aims to highlight the important effect of the choice of structural system on embodied carbon of buildings. A set of 15 alternative steel and concrete structural systems including moment resisting frames, braced frames, shear walls and dual systems were designed for 3, 10 and 20 storey buildings. A process-based analysis was conducted to estimate the carbon emissions incurred in material extraction, transportation and construction phases of these 15 structural system alternatives. The results highlight the importance of considering carbon footprint on top of other conventional criteria when selecting the structural system of a building.

show abstract

A Soldering Flux Tackles Complex Defects Chemistry in Sn‐Pb Perovskite Solar Cells

Zhou,

Chen,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Developing tin‐lead (Sn‐Pb) narrow‐bandgap perovskites is crucial for the deployment of all‐perovskite tandem solar cells, which can help to exceed the limits of single‐junction photovoltaics. However, the Sn‐Pb perovskite suffers from a large number of bulk traps and interfacial nonradiative recombination centers, with unsatisfactory open‐circuit voltage and the consequent device efficiency. Herein, for the first time, it is shown that abietic acid (AA), a commonly used flux for metal soldering, effectively tackles complex defects chemistry in Sn‐Pb perovskites. The conjugated double bond within AA molecule plays a key role for self‐elimination of Sn4+‐Pb0 defects pair, via a redox process. In addition, C═O group is able to coordinate with Sn2+, leading to the improved antioxidative stability of Sn‐Pb perovskites. Consequently, a ten‐times longer carrier lifetime is observed, and the defects‐associated dual‐peak emission feature at low temperature is significantly inhibited. The resultant device achieves a power conversion efficiency improvement from 22.28% (Ref) to 23.42% with respectable stability under operational and illumination situations.

show abstract

Assessment Model for Energy Consumption and Greenhouse Gas Emissions during Building Construction

Cited by 101 publications

References 30 publications

Estimation and Minimization of Embodied Carbon of Buildings: A Review

Estimation and Minimization of Embodied Carbon of Buildings: A Review

Comparative Analysis of Embodied Carbon Associated with Alternative Structural Systems

A Soldering Flux Tackles Complex Defects Chemistry in Sn‐Pb Perovskite Solar Cells

Contact Info

Product

Resources

About