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Energy efficient houses

timber frame homes are one of the most amazing houses a person can have.The concept of passive houses today is to have the highest energy standards in the construction, reducing energy consumption for heating up to a whopping 90%. Wide application of this standard in the construction of individual or collective homes and institutional buildings would have a dramatic impact on energy savings.
Data from the US Energy Information Agency shows that in the developed world (Europe and North America) buildings are "guilty" for about 48% of discharged greenhouse gases per year and about 76% of the energy produced by plants goes to supply buildings (homes, institutions , production facilities). We all know clearly that the construction sector (buildings) is one of the main pollutants and causes of climate change, so here comes the question is: How to satisfy our energy needs of our construction and protect the nature at the same time and save money? In the area of energy efficiency, passive houses are a great option for new and technologically advanced construction, both residential and commercial and institutional projects.
Passive house is very well insulated, almost hermetically sealed construction which is mainly heated by passive solar heating and internal heating from people, electrical equipment, etc., where the energy losses are minimized. Any additional heating (if required) is provided by small sources. With proper shading (eaves, trees) and orientation of windows, you will also minimize the need for cooling devices. By building a fan with energy recovery (ERV) that provides continuous and balanced flow of fresh air you will have a wonderful temperature in the house. The result is a system that not only reduces heating costs up to 90%, but also provides high quality atmosphere inside.
A passive house is a comprehensive system. The word "passive" describes the capacity of the system for receiving and retaining energy. Since working with natural resources, free solar energy is absorbed and distributed efficiently without relying on "active" systems that would allow the building to reach zero consumption. The main feature of passive houses are triple glazed glass windows, great isolation, encapsulated construction of the building, natural building materials, minimal heat conductivity through construction and fan with energy recovery.
In the last 10 years in Europe were built more than 15 000 buildings in passive house standard, from individual to collective homes, factories, schools and office buildings. Many of these buildings are under the supervision of EU bodies (European Commission) who examine and confirm their performance. The European Commission has already approved this standard as part of a strategy for energy efficiency.
Technical features
Encapsulation structure: <0.6 ACH (change of air per hour) at 50 pascals pressure
Annual need for heat: <15 kWh / m2 / y (kWh per square meter per year)
Primary energy <120 kWh / m2 / y
Additionally, it is recommended to have the following measures: U-value window: <0.8 W / m2 / K
Ventilation system with energy recovery greater than 75% efficiency and low power consumption
Heat transfer through the structure: <0.01 W / mK (thermal conductivity, watt per meter kelvin)