What is an energy-passive house?

Passive house (or energy-passive house) called residential building, which has a low level of heat losses, compared with a conventional housing.

Also in the literature can be found terms such as "Thermal neutrality", "Thermal inertia" or simply "passivity". they all say one thing - the heat loss of the building.

energy-passive houses - not a novelty, because the standards for their creation have been developed in Germany in the early 90s, and today the number of energy-passive houses in the world has about 60 000 pieces.

What kind of house can be considered energy-passive?

According to German standards, Passive House is to lose 90% less heat than conventional, thus spending less on heating
15 kWh of energy per square meter per year.

According to calculations, heating power must not exceed 10 watts per square meter.

So-called blower door test It should show a minimum air permeability. In fact, it has to be house-thermos with mounted ventilation system with heat recovery.

How it achieved energy-passive houses?

1. The house should not be a barrier to air, in particular between the floors of the house. From this point of view, we are interested in this project house, where part of the space interstorey absent, giving the house a light and circulate the air by 5 meters in height:

2. All walling (foundation, roof, walls) Must be securely insulated and made from advanced materials (foam, concrete).

3. It is necessary to exclude the possibility of cold bridges in all nodes and the junction.

4. What mentioned above, - a ventilation system with heat recovery (persistence) of heat: an inflow of fresh air, but heats it from the intake air of an old building.

5. Projections based on solar radiation (windows to the south) and the wind rose (blank walls on the leeward side).

6. home equipment eletkronnymi type systems, "smart home" - for electricity consumption in the night time (at a reasonable price rate) for the light only in the dark and motion sensors, etc.

Country house, built based on the technology of the passive house building, almost do not need heating: Thermal radiation of appliances and minimum heating by heaters and everything.

In view of rising prices for electricity and gas, the house should be built precisely in compliance with energy-efficient technologies.