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Klimanøytrale bygninger
Authors: Publication Year: 2011


Fremtidens energieffektive hus
Publication Year: 2012


Passivhusekspert Tor Helge Dokka har mange tanker om fremtidens bygg. Han spår fjernvarmens død, men tror fortsatt på varmepumpen. Intervju med Tor Helge Dokka i Teknisk Ukeblad. Artikkel skrevet av Fredrik Drevon.

Energy-plus, zero energy and zero emission buildings denote some of the best buildings of today and the future with respect to energy efficiency and environmental impact. A zero emission building might be defined in different ways. Nevertheless, the main concept is that renewable energy sources produced or transformed at the building site have to compensate for CO2 emissions from operation of the building and for production, transport and demolition of all the building materials and components during the life cycle of the building. In order to fulfill this, CO2 emission data has to be made available and verified for traditional…

Vacuum insulation panels (VIP) is a high performance thermal insulation material solution with thermal conductivity values reaching as low as 4.0 mW/(mK). With time the thermal performance of the VIPs will degrade as moisture and gas permeate through the barrier envelope of the panels. To better evaluate these ageing effects, accelerated ageing experiments are needed. VIPs consist of a porous core of pyrogenic silica (SiO2) and a gas and vapour tight envelope. The external factors that are found to contribute most to ageing of VIPs are temperature, moisture and pressure. Several experiments have been initiated to evaluate the acceleration effects…

While window frames typically represent 20%"30% of the overall window area, their impact on the total window heat transfer  rates may be much larger. This effect is even greater in low-conductance (highly insulating) windows that incorporate very low  conductance glazings. Developing low-conductance window frames requires accurate simulation tools for product research and  development.  The Passivhaus Institute in Germany states that windows (glazing and frames, combined) should have U-factors not exceeding  0.80 W/(m² K). This has created a niche market for highly insulating frames, with frame U-factors typically around 0.7-1.0 W/  (m² K). The U-factors reported are often based on numerical…

Konkurrerer om fremtidens blokk
Publication Year: 2011


Klart for Norsk Tredag
Publication Year: 2011


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