By Topic

Revisiting energy used to manufacture a desktop computer: hybrid analysis combining process and economic input-output methods

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Williams, E.D. ; United Nations Univ., Tokyo, Japan

Using hybrid assessment that combines process and economic input-output methods, the total energy and fossil fuels used in producing a desktop computer with 17-inch CRT monitor are estimated at 7,320 Megajoules (MJ) and 290 kg respectively. This indicates that the network of industries for manufacturing computers is energy intensive: the ratio of fossil fuel use to product weight for a computer is 12, an order of magnitude larger than the factor of 1-2 for many other manufactured goods. In contrast with many home appliances, life cycle energy use of a computer is dominated by production (83%) as opposed to operation (17%). The yearly life cycle cost of owning a computer is about 3,000 MJ/year, half again that of a refrigerator, a much larger appliance that uses far more electricity in operation. The short lifespan of computers and the variety of computing needs of users suggests that extension of lifespan, for example by promptly reselling to users who need less computing power, is a promising approach to mitigating environmental impacts.

Published in:

Electronics and the Environment, 2004. Conference Record. 2004 IEEE International Symposium on

Date of Conference:

10-13 May 2004