Retrofitting Electrically Heated Single-Family Houses to Net-Zero Energy

Bernardo, RicardoLund University,Lunds universitet,Institutionen för arkitektur och byggd miljö,Institutioner vid LTH,Lunds Tekniska Högskola,Avdelningen för Energi och byggnadsdesign,Institutionen för bygg- och miljöteknologi,Department of Architecture and Built Environment,Departments at LTH,Faculty of Engineering, LTH,Division of Energy and Building Design,Department of Building and Environmental Technology,Faculty of Engineering, LTH (författare)

Only in Sweden, single-family houses account for approximately 30% of energy use in all buildings and a large part uses only electricity for heating. The potential for improvements on energy efficiency in these houses is large. This study theoretically investigates retrofitting of electrically heated Swedish single-family houses by using an air-source heat pump for both space heating and domestic hot water. Combination with solar collectors and solar cells were also theoretically investigated. Since this solution is an add-on to the existing heating system the investment cost can be reduced compared with a new heat pump installation for domestic hot water. The total annual energy reduction for domestic hot water and space heating in a Swedish single-family house when using the combined heat pump and solar thermal collectors was estimated to be roughly 70%. The remaining electricity demand for electric appliances can be covered by approximately 10 kWp solar cells therefore reaching net-zero energy level.

Davidsson, HenrikLund University,Lunds universitet,Institutionen för arkitektur och byggd miljö,Institutioner vid LTH,Lunds Tekniska Högskola,Avdelningen för Energi och byggnadsdesign,Institutionen för bygg- och miljöteknologi,Department of Architecture and Built Environment,Departments at LTH,Faculty of Engineering, LTH,Division of Energy and Building Design,Department of Building and Environmental Technology,Faculty of Engineering, LTH(Swepub:lu)slju-hda (författare)
Institutionen för arkitektur och byggd miljöInstitutioner vid LTH (creator_code:org_t)

Ingår i:Proceedings of the ISES Solar World Conference 2015Freiburg, Germany : International Solar Energy Society, s. 66-729783981465952

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