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Energieffektivisering av fördelningsstationer: Kartläggning och energieffektiviseringsförslag för fyra av Umeå Energi Elnäts fördelningsstationer
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2012 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Energy efficiency for distribution stations


The aim of this thesis is to investigate in which solutions that could be profitable when efficient the heating of distribution stations at Umeå Energi since those are heated with direct electric heating today. The aim of this study was also to estimate the energy spent on heating today. To calculate this some power measurements has been done in one of the stations. To get an idea of ​​the need for heating per year, a heat loss calculation on the distribution stations has been made. The calculation is then used as the base for comparison of various heating methods and their environmental impact. The heating methods that were compared was direct electricity, pellets, air/air heat pump and air/water heat pump. The result shows that the best overall solution is to install air/air heat pump that will reduce energy use about 40% without having to spend an unreasonable amount of money or time on maintenance. A lowering of temperature inside the distribution stations should be seen as a first step. For some stations should additional insulation be considered necessary before changing the heating method. A drop in temperature along with additional insulation and installation of air/air heat pumps reduces energy consumption to less than half in all cases. In summary, there is great potential for energy efficiency of distribution stations, how far one is willing to go depends on what can be seen as economically reasonable.

Place, publisher, year, edition, pages
2012. , 49 p.
Keyword [en]
Carbon dioxide emissions, Direct electricity, Distribution station, Energy efficiency, Heating
National Category
Engineering and Technology
URN: urn:nbn:se:umu:diva-59270OAI: diva2:551652
External cooperation
Umeå Energi
Subject / course
Examensarbete i miljö och hälsoskydd
Educational program
Bachelor of Science in Environmental Health
Available from: 2012-09-12 Created: 2012-09-11 Last updated: 2012-09-12Bibliographically approved

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