Tokede, O; Boggavarapu, M K and Wamuziri, S (2023) Assessment of building retrofit scenarios using embodied energy and life cycle impact assessment. Built Environment Project and Asset Management, 13(5), pp. 666-681. ISSN 2044-124X
Abstract
Purpose: Crucial transition of the Indian residential building sector into a low-emission economy require an in-depth understanding of the potentials for retrofitting the existing building stock. There are, however, limited studies that have recognised the interdependencies and trade-offs in the embodied energy and life cycle impact assessment of retrofit interventions. This research appraises the life cycle assessment and embodied energy output of a residential building in India to assess the environmental implications of selected retrofit scenarios. Design/methodology/approach: This study utilises a single case study building project in South India to assess the effectiveness and impact of three retrofit scenarios based on life cycle assessment (LCA) and embodied energy (EE) estimates. The LCA was conducted using SimaPro version 9.3 and with background data from Ecoinvent database version 3.81. The EE estimates were calculated using material coefficients from relevant databases in the published literature. Monte Carlo Simulation is then used to allow for uncertainties in the estimates for the scenarios. Findings: The three key findings that materialized from the study are as follows: (1) the retrofitting of Indian residential buildings could achieve up to 20% reduction in the life cycle energy emissions, (2) the modification of the building envelope and upgrading of the building service systems could suffice in providing optimum operational energy savings, if the electricity from the grid is sourced from renewable plants, and (3) the production of LEDs and other building services systems has the highest environmental impacts across a suite of LCA indicators. Originality/value: The retrofitting of residential buildings in India will lead to better and improved opportunities to meet the commitments in the Paris Climate Change Agreement and will lead to enhanced savings for building owners.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | embodied energy; life cycle assessment; residential buildings; retrofitting |
| Index terms: | estimate, life cycle energy, India, building envelope, retrofitting, embodied energy, climate change, methodology, energy-saving, Paris, effectiveness, environmental impact, commitment, owner, building stock, life cycle assessment, Monte Carlo simulation, database, upgrading, savings, building service, life cycle impact assessment, residential building, case study |
| Subjects: | asset management, sociology, data management, performance management, research methods, architectural elements, renovation and retrofit, Geography, modelling and simulation, psychology, economic analysis, financial and cost management, energy systems, strategic management, construction type, data collection methods, climate science, engineering systems, environmental impact |
| Topics: | Stakeholder Management, Construction Technology, Sustainability, Business Strategy, Cost Management, Geographical Context, Research Practice, Engineering Principles, Organizational Design, Design Practice, Digital Applications, Quality Management |
| Descriptive scope: | 5 PCTEA |
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