Förbättring av Egenvärmehus
En fallstudie av ett flerbostadshus, Kv. Fyrtornet
Energy EfficiencyEnergy efficient buildingsEnergyPassive houseLarge buildingIDA Indoor Climate and EnergyWinsunEnergioptimeringEnergisnåla husEnergiprestandaPassivhusFlerbostadshusIDA Inneklimat och EnergiWinsun.
Energy efficiency has become a very topical issue that has been discussed throughout the European Union for preventing negative environmental impacts that have been associated with the consumption of energy. In the residential sector have mainly municipalities set strict requirements for the reduction of energy consumption while the renewable energy has been asked. Different concepts of low-energy buildings have been developed to reduce the cost of operation and maintenance in existing buildings such as in new ones.This thesis has aimed to minimize the energy cost of a large building which has had low energy consumption features originally. Energy reviews has been initiated in order to be able for showing how the house electricity could be carried out even more efficiently.The work was initiated through a literature study to clearly increase the reliability on the energy subject. Different concepts of low-energy buildings have been treated in connection with its specifications, afterward those have been compared with the obtained results. An analysis of the building?s energy use has been carried out as well as economic evaluation has been considered in order to the viability of the energy efficiency measures that have been proposed.Energy demand for the studied building has been valued at 48, 7 kWh/m2 annually in its original form. The obtained value has been lower than the required energy which has been promoted in Building Regulations, BBR 18. After the improvement of building has been performed, by using a package of measures, the building has been upgraded to a passive house level and the energy demand has become 21, 5 kWh/m2 annually. A reasonably large amount of energy has been reduced in connection with the improvement package as well as the whole profitability has proven to be economic sustainable. By integrating solar energy systems in the building, its result has shown a biggest benefit for saving energy.