Do you know the real energy consumption parameters of a low energy house?
Anyhow precisely the energy intensity of a building is calculated, it cannot take into an entity all the impacts that are reflected in total energy consumption – some thermal bridges, the quality of thermal insulation performance, the quality of production and installation of window constructions, etc.
The most significant impact on energy consumption, not just in case of a low-energy house, has the behaviour of people living in the house. Therefore, the most important criterion for achieving the low energy standard is the real consumption of the house – the building.
We divide energy consumption in a family house as follows:
- heating, cooling
- (TUV) preparation of hot water
- other consumption
We can set the calculation to affect only the first and second components. But when designing a house, you can think about how you can save energy in the house. The solution lies in simple arrangements such as energy saving bulbs, class A appliances, building and using a high-quality fireplace, etc. A significant contribution into this can make smart wiring (lighting, socket circuits including switches, automatic dimming control, measurement and regulation of the heating for example when the window is open the heating system is ineffective)which can bring energy savings up to 15%.The behaviour of residents in the same building may represent consumption differences up to 50%. Therefore, it is very important to monitor the overall real consumption of a low-energy house.It should not exceed 150 kWh / m2per year, with heating and DHW reaching about 80 kWh / m2per year.
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