Energieffektivisering av bostäder
En analys av åtgärder som kan förbättra energiprestandan i flerbostadshus
Efficient energy use in the housing sector is crucial for achieving a sustainable society. The expansion of this sector only represents a fraction of the existing houses, hence it?s within the existing houses the potential for energy savings lie. This potential has been analyzed in order to determine if it?s possible to cut the current energy demand in half. An ongoing renovation project was used as a reference to evaluate the different measures that can increase a buildings efficiency. The measures evaluated were also compared to similar ones from other projects. The main methods examined were ventilation systems utilizing heat exchangers, energy efficient windows and glazed balconies. Based on cost efficiency and amount of energy saved, the results were then evaluated and compared to one another. This showed that the cost efficiency for the different measures varied depending on the size of the building, meaning the different measures should be prioritized in different scenarios. It was concluded that it?s theoretically possible cut the current energy demand of the housing sector in half, but very hard and costly to achieve in reality.