VELUX Carbonlight Houses:
The VELUX Group has launched the project Model Home 2020. Their vision for climate-neutral buildings with a high level of liveability. This is part of a VELUX strategy to take an active part in developing sustainable buildings – the buildings of the future.
The vision and principles behind Model Home 2020 need to be developed and tested; so they’ve built six full-scale experimental demo-houses which will be placed at six different locations in five countries.
The two experiments in Denmark were built as a partnership between the VELUX Group and
VELFAC. Each of the six houses also involved a number of local and regional partners, suppliers, architects, engineers and researchers.
They all reflect and respond to three main principles – efficient energy design, high degree of liveability and minimum climate impact – as well as the different climatic, cultural and architectural conditions of the countries in which they are built.
Commissioned to explain Velux's innovations in ecological building design, the film leads the viewer through a thoughtful and engaging insight into the hidden elements of the Green Lighthouse, a prototype building designed for Copenhagen. Using complex lighting techniques, a timelapse effect in the film illustrates the design's unique response to its environment. Taking into account the position of the sun and the changes of seasonal temperature, the intelligent house modifies its features to conserve energy and reduce CO2 emissions.
Power of Nature
All houses achieved a notable daylight factor of at least 5%, exceeding most national standards by a factor of 3-5. Furthermore, residents registered one more hour of daylight between sunrise and sunset, and evel led to some family members accepting natural lighting levels as low as 50 lux without turning on artificial illumination. In one instance, the power consumption for lighting was halved to a mere 1.7 kWh/m2a.
When talking about increasing the daylight factor, we usually think large window areas. Model Home 2020 houses are no exception and their window areas comprise 30-50% of the living area, is key to achieving these levels of natural daylight. However, it also raises the concern of excessive heating due to solar influx in the warmer seasons. This challenge was successfully addressed by applying natural ventilation and protective sunscreening to each model home. Measurements showed that automated night-time ventilation alone was capable of cooling down the indoor temperatures from 26°C in the evening to around 20°C the next morning.
All in all, the results support the notion that beneficial outdoor properties can be put into effect inside a modern home without compromising the principles on which the future of sustainable building relies. They even describe a home concept that, for the first time in centuries, happens to be supportive of our very own nature.
Find out more about the Model Home 2020 programme and its results. Download the report.
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