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Energy Efficiency Improvements Using DC in Data Centres
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The installed power usage in a data centre will often amount to several megawatts (MW). Thetotal power consumption of the data centres in the world is comparable to that of the airtraffic. The high energy costs and carbon dioxide emissions resulting from the operation of adata centre call for alternative, more efficient, solutions for the power supply design. Oneproposed solution to decrease the energy usage is to use a direct current power supply (DCUPS) for all the servers in the data centre and thereby reduce the number of conversionsbetween AC and DC.The aim with this thesis was to determine whether such a DC solution brings reduced powerconsumption compared to a traditional setup and, if this is the case, how big the savings are.Measurements were carried out on different equipment and thereafter the power consumptionwas calculated. The conclusion was that up to 25 % in electricity use can be saved when usinga DC power supply compared to the traditional design.Other benefits that come with the DC technology are simplified design, improved reliabilityand lowered investments costs. Moreover the use of DC in data centres enables a moreefficient integration of renewable energy technologies into the power supply design

Place, publisher, year, edition, pages
2011. , 31 p.
UPTEC ES, ISSN 1650-8300 ; 11018
URN: urn:nbn:se:uu:diva-155096OAI: diva2:423770
Educational program
Master Programme in Energy Systems Engineering
Available from: 2011-06-17 Created: 2011-06-16 Last updated: 2011-06-17Bibliographically approved

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