Novel instrumentation for monitoring after-hours electricity consumption of electrical equipment, and some potential savings from a switch-off campaign.

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dc.contributor.author Brown, Neil en
dc.contributor.author Bull, R. en
dc.contributor.author Faruk, Farhan en
dc.contributor.author Ekwevugbe, Tobore en
dc.date.accessioned 2012-04-11T13:51:09Z
dc.date.available 2012-04-11T13:51:09Z
dc.date.issued 2012
dc.identifier.citation Brown, N., Bull, R., Faruk, F. and Ekwevugbe, T. (2012) Novel Instrumentation for Monitoring After-Hours Electricity Consumption of Electrical Equipment, and some Potential Savings from a Switch-off Campaign. Energy and Buildings, 47, pp. 74-83 en
dc.identifier.issn 0378- 7788
dc.identifier.uri http://hdl.handle.net/2086/5899
dc.description.abstract An increasing cause of electricity use and greenhouse gas emissions is from IT equipment such as computers, printers, and servers, with worldwide computer use increasing from 1000 million PCs in 2006, to 1400 million in 2010, and estimated to cause 3% of global electricity demand. Significant energy may be saved if un-used devices are switched off. It was noted that the switch-off rates in the USA for desktop computers in 2006, could be as low as 30%, and there clearly is a need for up-to-date information. It has been difficult to provide accurate figures for switch-off rates, since previous monitoring of IT use has been expensive, requiring specialised equipment and electrical work, labour intensive (using walk-through surveys), or both. This paper demonstrates two low-cost techniques for estimation of unoccupied PC use. Precision and tracking for both were compared with actual power consumption, and subcircuit switch-off rates appeared to be under 76%. Whole building IT related use (including servers) was around 40% of electrical baseload. A desktop switch-off campaign was instigated for accessible equipment, resulting in a 20% reduction in electrical baseload. Extrapolation to a weeknight campaign suggests annual electricity savings of around 12%. en
dc.language.iso en en
dc.subject energy en
dc.subject electrical en
dc.subject efficiency en
dc.subject baseload en
dc.subject IT en
dc.subject ICT en
dc.subject standby en
dc.title Novel instrumentation for monitoring after-hours electricity consumption of electrical equipment, and some potential savings from a switch-off campaign. en
dc.type Article en
dc.identifier.doi http://dx.doi.org/10.1016/j.enbuild.2011.11.023
dc.researchgroup Institute of Energy and Sustainable Development
dc.researchgroup Institute of Energy and Sustainable Development en
dc.ref2014.selected 1368778962_9811521234653_16_4


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