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Low-energy house

Annual specific consumption of heat for heating:

up to 50 kWh/(m2a)
Low-energy house

Heat consumption of low-energy houses does not exceeds 50 kWh/(m2a). Such houses provide noticeably higher standard of energetic effectiveness than the minimal standard required by national regulations for properties of buildings. Usual consumption of a low-energy building is half of energy than consuption of a conventional house.

Principles of a low-energy house:

  • It is heated by a heating system with a lower output power and utilises renewable sources of energy.
  • Windows of the main residential rooms are oriented to south.
  • It has controlled ventilation and provides sufficient air replacement with minimal loss of heat.
  • It shows good thermal insulation parameters of all jacketing structures (peripheral walls, windows, floors and ceilings). The desired heat diffusion U of the peripheral structure is from 0.16 to 0.25 W/(m2K).
  • Windows with double or triple glazing show excellent thermal-insulation properties.

Parameters for low-energy houses are specified by standards TNI 73 0329 (for family houses) and TNI 73 0330 (for residential houses).

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