The Energy Conservation Potential of Power Management for Fax Machines

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TypeTechnical Report
Series titleInternal Report, Institute for Research in Construction, National Research Council Canada; Volume 666
Physical description61 p.
AbstractWe measured the power draw, power quality, and operating profiles of a number of fax machines. Our aim was to quantify fax machine energy consumption and to evaluate the potential of energy conservation through power management. The results established that fax machines, when idle, draw between 7 and 30 % of nameplate rated power, with power factors around 0.5, and total harmonic distortion in the current of over 150 %. We then used fax machine activity reports to analyze the usage of 32 fax machines over a 12 week period. These fax machines were active for an average of only 3.7 % of the time they were switched on, although there was considerable variation about this mean. Further, an average of 86.4 % of on-time could be eliminated by automatically switching off the fax machines after 15 minutes of inactivity. Such power management could realize savings of around $19 per fax machine per year. In addition, we found that around 9.3 % of fax transactions were halted due to transaction errors, and that up to 23.8 % of faxed pages were cover sheets. Efforts to reduce transaction errors and the use of cover sheets could realize additional energy, time and paper savings, and reduce telephone charges.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number5352
NPARC number20375812
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Record identifier03473776-e37d-4122-9c96-6b68ab88eba9
Record created2012-07-23
Record modified2016-10-03
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