NDLI: Hybrid life cycle assessment of energy use in laptop computer manufacturing

Content Provider	IEEE Xplore Digital Library
Author	Liqiu Deng Williams, E. Babbitt, C.
Copyright Year	2009
Abstract	ALONG with the rapidly increasing number of personal computers, the energy consumption associated with a computer has attracted increasing attention. However, different Life Cycle Assessment (LCA) studies of computers report qualitatively different results. For example, a LCA by one of the authors (Williams) reports a total energy of 6,400 MJ required to produce a desktop computer with a 17-in CRT monitor [1], while a study commissioned by the European Commission under the developing Energy using Products (EuP) Directive reports a figure of 2259 MJ required, around half of the results of Williams [2]. While there are some differences in data used, the primary origin of the large gap between studies is the boundary of processes considered. The EuP study uses “process-sum analysis”, meaning that results are based entirely on a bottom-up construction of the supply chain based on facility level data on material and energy flows. Due to limited data the study does not account for energy used in manufacturing chemicals, equipment, manufacturing of some parts (such as hard drives) and services. The analysis by Williams uses a hybrid analysis which combines the bottom-up process-sum network with a top-down economic input-output (EIO) model to account for excluded processes.
Starting Page	1
Ending Page	1
File Size	100557
Page Count	1
File Format	PDF
ISBN	9781424443246
DOI	10.1109/ISSST.2009.5156722
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer aided manufacturing Portable computers Manufacturing processes Power generation economics Life estimation Additives Microcomputers Semiconductor device manufacture Raw materials Assembly
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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