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Life-Cycle Energy Assessment in Buildings: Framework, Approaches, and Case Studies

Praseeda, KI and Venkatarama Reddy, BV and Mani, Monto (2017) Life-Cycle Energy Assessment in Buildings: Framework, Approaches, and Case Studies. [Book Chapter]

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Official URL: https://doi.org/10.1016/B978-0-12-409548-9.10188-5


The role of the built environment and the construction industry in sustainable development gained global attention due to their significant share in global warming, GHG emissions, energy demand, and depletion of nonrenewable resources. Residential buildings carry the largest share among buildings and place heavy demands on natural resources for building materials, energy, and water. The significant share of energy and natural resources involved in the production of building materials emphasizes the need for appropriate conservation strategies based on scientific study. This initiated efforts for comprehensive assessment of a building's energy consumption and environmental impacts over its life span, termed as life cycle. Life-cycle energy (LCE) in buildings comprises two major components, embodied energy (EE) and operational energy (OE). EE comprises the net energy involved in production of building materials, its transportation to the construction site, and construction. This article presents a practical framework for EE assessment, generating data for prominent building materials in India based on first-hand data collection, and discusses the parameters determining EE of a material which differ widely depending on the type of industrial process employed, its energy efficiency, geographical location, raw materials adopted, etc. Assessing relative share of EE and OE in buildings becomes a significant input to identify the potential areas for energy conservation. With this objective, the article presents assessment of EE and OE for few traditional and conventional dwellings in different climate zones of India using field survey data on building materials, construction technologies, OE, etc. The discussion provides an insight into the energy in buildings with particular reference to the climatic-response associated with the thermal performance of traditional and modern buildings in India. The study reveals a wide range of EE value of rural and urban dwellings studied. The analysis for both rural and urban dwellings results did not reveal any definite correlation between EE and OE, and EE and LCE. However, the relative significance of EE and OE in LCE varied for urban dwellings depending on the climate zone. The results reiterate the importance of EE assessment for LCE analysis in buildings.

Item Type: Book Chapter
Publisher: Elsevier
Additional Information: The copyright for this article belongs to the Elsevier.
Keywords: Assessment; Buildings; Framework; India; Life-cycle energy
Department/Centre: Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited: 29 May 2022 08:06
Last Modified: 31 May 2022 01:02
URI: https://eprints.iisc.ac.in/id/eprint/72788

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