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Economical savings through lowering energy consumption in rented apartments: A case study in Västerås area
Mälardalen University, School of Sustainable Development of Society and Technology. (MERO)ORCID iD: 0000-0001-5277-4567
Mälardalen University, School of Sustainable Development of Society and Technology. (PRO)ORCID iD: 0000-0002-7233-6916
2008 (English)In: Journal of Numerical and Applied Mathematics, ISSN 0868-6912, Vol. 96, no 1, p. 234-245Article in journal (Refereed) Published
Abstract [en]

Electricity and heat consumption were recorded for 24 apartments distributed in two buildings over a 2-year monitoring period. The consumption of different built-form groups (according to their floor area) is also investigated. In general buildings located in Västerås (Sweden) are characterized by the fact that energy costs are included in the rent and therefore tenants are not encouraged to save energy. Data obtained from the company renting out apartments, Mimer was analyzed in order to find out if there were any general trends describing the connection between energy use, the level of surface area and number of rooms, or the main driving force behind is the individual behaviour of tenants (since in these two buildings tenants pay themselves for the total energy consumption). It was found that the analysis by various parameters is as important as analysis of each individual apartment. Some tendencies were well defined such as increase of total electricity consumption during the winter months and lowest both electricity and hot water consumption in June and July. The number of rooms at equal surface area could not be accepted as a pattern of electricity consumption. Bearing in mind the interactive contact between the energy distributor companies and the respective tenants, a positive trend of lowering both studied parameters was well manifested when a comparison of data obtained during 2005 and 2006 was carried out. This study shows that the economical savings for both buildings for the period 2005-2006, are 8000 SEK for electricity and 2300 SEK for district heating. Further improvements in company-tenants relations in terms of more detailed mutual information would probably change tenants’ behaviour thus improving energy and economic saving tendency in both buildings. We strongly believe that similar research approaches should be further included in larger programmes aimed at developing efficiency measures to quantify energy savings advantages in economic terms. Therefore, it would be economically reasonable for owners and housing promoters to invest in energy-saving measures.

 

Place, publisher, year, edition, pages
Kiev: Kievs nationella Universitet , 2008. Vol. 96, no 1, p. 234-245
Keywords [en]
applied mathematics, energy saving(s), utilization, apartments
National Category
Computational Mathematics
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-8035OAI: oai:DiVA.org:mdh-8035DiVA, id: diva2:293218
Projects
STEM Energy savings in apartmentsAvailable from: 2010-02-11 Created: 2010-02-11 Last updated: 2015-06-26Bibliographically approved
In thesis
1. Characterization of household energy consumption in Sweden: energy savings potential and feedback approaches
Open this publication in new window or tab >>Characterization of household energy consumption in Sweden: energy savings potential and feedback approaches
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Energy consumption is on a constant rise with domestic use contributing substantially to the overall consumption. The population growth along with ever increasing comfort levels and daily appliance usage are driving the domestic electricity demand to higher levels. Targeting domestic consumption is thus of great importance if global consumption is to be lowered. This involves understanding and changing consumers’ behaviour, awareness and increasing their knowledge on the subject of energy use.

In this thesis various factors determining household energy consumption such as dwelling size, income and number of occupants have been found alongside consumer behaviour to influence consumption the most.

Energy awareness, related interest and knowledge have also been considered when trying to explain differences in household consumption patterns.

Despite all possible characteristics and factors, the largest differences in energy consumption are found between individual households.

Providing feedback and information to households has been proven effective when addressing the issue of reducing domestic energy use. In this thesis, the effectiveness of three of the most popular ways of currently delivering feedback and information on energy consumption (displays, websites and bills) have been investigated by analyzing consumption patterns before and after their implementation. Consumers living in apartments that followed their consumption through the web based feedback were the ones that achieved the greatest electricity reductions (17,5%) when compared to the years before the website.

In order to provide effective feedback, with long lasting results that would keep consumers interested, several parameters have been proposed to be included when developing feedback and information. The type of dwelling (house or apartment), the age of the occupants, their level of education, income and their energy awareness and interest are the main determinants of feedback preferences.

The findings presented in this thesis contribute to a better understanding of households’ energy consumption patterns closely related to their characteristics, behaviour, interest and awareness, and also provide ways of improving the development of consumption feedback and information.

Place, publisher, year, edition, pages
Mälardalen University, 2012
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 129
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-14865 (URN)978-91-7485-077-2 (ISBN)
Public defence
2012-09-12, Lambda, Mälardalens högskola, Västerås, 10:00 (English)
Opponent
Supervisors
Available from: 2012-06-25 Created: 2012-06-23 Last updated: 2013-12-04Bibliographically approved

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Vassileva, IanaDahlquist, Erik

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