Finland makes strides in reducing heating costs for citizens

Original source:
http://www.innovations-report.com/html/reports/energy_engineering/report-51012.html

Summary:

• Research on low-energy building in Finland has mainly focused on single-family houses.
• VTT is now co-ordinating work aimed at creating the prerequisites for the productization of low-energy building.
• VTT has been supervising research and development activities in which the requirements set for apartments clearly exceeded the current living comfort and technical building (construction) standards.
• VTT and a network of several companies have designed exterior walls, sauna elements, balcony doors and windows with excellent thermal insulation properties, as well as an integrated ventilation-heat recovery system that removes the need for radiators in the apartment.
• Low-energy building only increases the construction cost by some two or three per cent, which will be soon covered by long-term savings in heating energy consumption.
• Compared with building construction according to current standards, the savings in heating costs achieved in one block of flats built with low-energy technology would total 50,000 euro in ten years, if energy prices continue to rise by three to six per cent annually.
• The low-energy apartment built in Espoo exploits the heat generated by the occupants and the household equipment.
• This heat is recovered with the new ventilation-heat recovery system.
• Thus external energy, produced with the same system, is only required for heating during two or three months a year; in the summer the apartment is kept cool as a combined result of structural solutions and ventilation.
• The placement of the kitchen and wet areas in the low-energy apartment helps avoid the heat losses due to the customary long pipelines.
• Particular care was taken during construction to make the joints between the building elements, windows and doors airtight and avoid thermal bridges.
• The project also received funding from the National Technology Agency of Finland (Tekes).

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