Passive House Windows
Passive house’s revolutionary design utilises the solar irradiation coming in through the windows, and also the heat from appliances and people. You only need 10 of your regular energy usage to heat a Passive House so you can see for yourself the advantages, as well as the money you can save.
Providing comfortable temperatures all year round makes the central heating and air conditioning redundant. A Passive House window has a duel role: first, heat loss from the building can be reduced even if it has lots of glass, and secondly, the windows open up options for heat gain through solar irradiation.
Internorm’s range of thermally insulated windows is good enough to come out in tests with Ug values as low as 0.4 W/(m2K)> This result was achieved using only Passive House’s thermal insulation.
Advantages of passive house windows
All Passive House windows are triple glazed, and the frames are very well insulated to fulfil the high requirements of thermal insulation. A large portion of the actual window is actually the frame, so its quality must be perfect.
Listed below are the advantages Passive House has to offer:
- Highest quality thermally insulating glazing
- Highest quality thermally insulating frame
- Thermally optimised edge compound
- 100% thermally optimised, professional installation
Of course the position and orientation of your Passive House windows is vitally important, and needs to be carefully planned so the solar panels catch enough sunlight throughout the day to fully charge the battery. In the winter, windows let more solar energy into the building, rather than letting it escape outside. Consideration must be given to large glass areas which should ideally face south. In the summer, the sun is higher in the sky, and less sunlight gets into buildings with the majority being reflected.
Solar irradiation on windows facing the south is reduced in summer and extra sun protection isn’t usually needed. East or west orientation (because of the low position of early morning, and late evening sun in summer) the east or west facing windows can overheat so adequate sun protection is provided.
On average, you can estimate that a window facing east or west gets around 60 % more solar irradiation. Facing north its round 40% and it is recommended that Passive houses should keep to a maximum deviation of 10° from the south.
You must remember to observe the local positions of the sun throughout the year and incorporate this into your plan, although we understand circumstances, such as trees and buildings, have an effect on the process.
A highlight of alpine architecture - in passive house standard
A highly efficient alpine mountain chalet building which is highly energy efficient, and has no electrical connection to the main grid. It has a low demand for energy and runs in an extremely economical and ecological way. The design maximises the use of solar energy, and the building opens up towards the south to catch the sun for a large part of the day. More warmth is taken than is given off by the building, and this is due to highly insulated Internorm windows.
As well as the solar panels there is a rapeseed oil heating and power unit, a sophisticated ventilation system with a 85% heat recovery rate, as well as the building utilising 100% of the rainwater collected. The 'Schiestlhaus' really is cutting edge when it comes to building technology.
'Schiestlhaus' was awarded first prize of "Energy Globe" in the federal provinces category.
General planer ARGE: pos architekten ZT-KG (planing) www.pos-architecture.com, Treberspurg&Partner ZT GmbH (tender and building supervision).