Energy Efficient Building

Did you know that…

• the near-zero energy building is a technically and specifically built building, based on the best available building practice, an energy efficient with renewable energy technology solution.This is a particularly energy efficient building that meets the energy efficiency class A. The energy efficiency of a building is more than 0 kWh / (m² ∙ a) but not more than the limit set in the regulation.
• that in the near-zero energy house, optimised energy use is compensated by using renewable energy sources to generate local heat and electricity, so that when designing the building, it is taken in consideration to choose the best corresponding heat and power production systems. The easiest way to generate heat and electricity from renewable energy sources is to use heat pumps, solar collectors (hot water) and solar panels (producing electricity).

What is Energy Efficiency Number?

Did you know that the energy efficiency of buildings are measured by the Energy Efficiency Number (ETA), which describes the total energy consumption of the building for indoor climate, DHW heating, and the use of household and other electrical equipment?

The Energy Efficiency Number (ETA) is calculated by assuring the indoor climate of the building with the net area of ​​the premises (heated area) in the standard use of the building.

Energy calculation is done with dynamic energy simulation software. The calculation model takes into account the entire energy use of the building, all heat losses (open exits, external boundaries, boundary rail joints and insulation interruptions, infiltration), and free heat from the building (lighting, equipment, people, sun) and residual heat used in engineering systems (ventilation residual, waste water heatsinks).

What is an Energy Label?

Did you know that the building meets the minimum energy performance requirements will be evidenced by the corresponding energy label?

The energy certificate is a document that shows how much of the building or part of it consumes per year energy per square meter of heated area. An energy label must be provided for all indoor climate in new buildings. On this basis, it is demonstrated that the building meets the minimum energy performance requirements.

Minimum energy performance requirements are set for the building as a whole. The building's composition includes calculating the energy efficiency after the boundaries and technical systems of the local energy production systems installed in the building or immovable (for example, solar panels, solar collectors). Energy systems connected with the energy network (for example, district heating) belong to the building from the point of connection of the energy network.