Join the build of our Passive House on our show grounds LIVE!
One of the most important issues when building your new home is: „Save energy on a daily bases“.
The largest amount of energy is used for heating the house. That’s why Hanse Haus spends a lot of attention towards a very well insulated house hull. As less heat gets lost - as lower the heating cost.
How a house can be build without the need of a conventional heating system Hanse Haus demonstrates with the newly built passive house on the show grounds at its headquarters in Oberleichtersbach, Germany.
Passivhaus-Wall
An optimal insulated HANSE-Passivehaus-Wall construction with overall widths of 410 mm assures a cosy house climate. The external wall insulation is 250mm thick. This comes in top of a fully insulated inner space from the actual timber frame. With this build up we reach a u-value of 0.09 W/m²K!
Thermo-Roof
Altogether 260mm insulation are fitted between the rafters and an additional 100mm fully insulated service area is included. This makes the roof a real energy saver with a u-value of 0,11 W/mK.
Passivhaus-Windows
The timber-aluminium cladded windows have got special insulated frames and treple glazing. The ug-value comes to 0.61 W/mK.
Innovative House Technology
Along with the well insulated house hull a highly effiecent heat recovery system is fitted. This also ensures a minium heat loss. The fresh air that comes into the house is pre-heated from a seperate geothermal collector as well as from the used warm air that normally would be blown out of the house.
At this stage the house would need a heat source that covers for 15 kWh per square meter and year. A micro heating system will be able to fullfill this task.
Solar collectors to heat the domestic water can be fitted on top of what is needed for a passive house standard.
What exactly is a „Passivhaus“ and how does it save valuble heating energy?
A Passivhaus is specefied through its sealed house envelope that assures a very high insulation and a very low heat usage. The heat needed for a Passivehaus would be reduced to 15 kWh per square meter per year. To compaire:
An exisiting house that was build in the 60s needs about 200kWh/m per year! This equals about 3.000 litres of heating oil by a house size of 150 m per year! A Passivhaus of the same size would use 225 litre of heating oil per anum.
With large south faced windows the Passivhaus will warm up very efficent using natural sorces.
Also within the house is heat generated by humans, electrical equipment, during cooking or with lightning.
To assure that valuble energy does not get lost by airing the house in a traditional fashon by opening windows an air ventilations system with heat recovery included controlls the constent air exchange in the house. The used air is recyled in the heat exchanger and used to heat up the house again.
That’s why only on some very cold winter days without any sun shine a seperate heat sorce is needed. In a HANSE-Passivhaus a microsystem is fitted along with very efficent solar collecotrs to heat the domestic water.