Energiberäkningar av fastighet Bobacken 250
Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
A large part of the total energy consumed by our houses in Sweden is used to heat them up during the long winter. That means that a lot of energy and money can be saved if all the houses could be made just a little more energy efficient. This report analyses a house from 1865 that during a renovation is planned to be energy analyst so it can be made more energy efficient. By using the program BV2 the house can be simulated to examine which efficient solution that gives the most profit and saves most energy.Currently the house is heated with an oil fired boiler which is about to be replaced because oil burning is bad for the environment and the climbing oil price increases heating costs. Because there is no district heating available, the best alternative is set to be a heat pump that takes heat from the ground rock. The age of the building imply that all information had to be taken by inspecting the building and measuring everything by hand. An interview were also held whit the owners to collect even more information, but many assumptions had to be made even with all the collected information.During the work progress it comes clear that the ventilation were inadequate, which means that the present energy consumption is too low and measured ventilation would lead to a higher heating cost.A simulation of the house when it has satisfied ventilation and an even indoor temperature was used as a reference to all the efficient actions.
It was only possible to fit more insulation to half the roof area due to its special construction and changing to more efficient windows lowered the energy consumption by 2000 kWh/year.The big economical profit that saved 35000 kr/year was to replace the oil fired boiler whit a heat pump.
Place, publisher, year, edition, pages
2012. , 23 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:umu:diva-59152OAI: oai:DiVA.org:umu-59152DiVA: diva2:551318
Bachelor of Science Programme in Energy Engineering
Östin, Ronny, Universitetslektor
Soleimani, Mohsen, Universitetslektor