"Buying all the products we needed from one supplier provided a sense of reassurance. We basically just added the floorheating pipes."John Møller-PedersenConstructor
The task was to build 18 houses in Denmark with the best possible indoor climate and zero energy consumption. A tough challenge, but very achievable.
Designing a total solutionThe contractor and the manager of the building project put their heads together to work out a solution. A photovoltaic system was chosen as the primary energy source, transforming the sun’s rays into electric power. The electric power is then used to operate a heat pump and a heat recovery and ventilation unit. The heat pump provides warm water for the floor heating in the houses.Floor heating helps to eliminate heating costsEnergy consumption for heating and ventilating the houses is estimated to be less than 4,000 kWh per year per house, while the photovoltaic system produces around 6,000 kWh. This means that more energy is produced than is required to operate the heat pump and ventilation unit. Using !oor heating in combination with the heat pump is very energy efficient. This is because floor heating requires a lower supply temperature than radiators. For every 1 degree centigrade that the supply temperature can belowered, heat pump efficiency (COP) improves by 2%.
In Skibet, near the city of Vejle, Denmark, environmentally-friendly geothermal heating, fast-reacting in-floor heating and energy efficient ventilation from Danfoss are providing a healthy indoor climate and maximum comfort in a modern, low-energy home.
The SIB ZERO +House is the name of Denmark's first low energy +house. The house, which was recently completed in the town of Sønderborg, has positive annual energy costs and provides a glimpse of tomorrow's energy-efficient home. The 200 m2 home actually produces more electricity than it consumes on an annual basis.