SAVE ENERGY THROUGH THE PASSIVE SYSTEMS FACHADAS

 

In the construction of a dwelling is taken into account the various systems that provide a thermal comfort inside the home, its temperature should be between 18° and 20 °. To achieve this temperature efficiently passive systems there are several. The passive system is to achieve thermal comfort without external energy consumption given its orientation, natural ventilation and recruitment and protection of solar energy.

 

Different passive systems that help the hygrothermal comfort for solar gain in cold climates: and wall trumpets, the wall parietodinámico houses and greenhouses.

 

Wall Trumpets

 

According to the Technical Building Code Energy Saver, It is defined as "an enclosure that uses solar energy for heating air recirculation building. It is generally formed by an inner sheet factory, an inner tube and an outer glazing. Air circulation can be natural (thermosiphon) or forced. Also called ventilated wall sun ". For maximum optimization it must be oriented to the sun, in the case of Spain south, and the wall must consist of materials that can store heat under the effect of thermal mass (stone, concrete, mud or water).

 

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During the day, the sun's rays pass through the glass sheet focusing on the dark surface of the wall where the heat is stored through the glass. At night, heat escapes from the wall into the cooling housing outside. Depending on the type of glass (single or double) You may get a lower heat loss to the outside.

 

This system has a low economic cost and easy construction and comfort in the home occur without any air conditioning apparatus. On the contrary, is not convenient installation in hot climates because overheating in summer would occur while preventing the entry of light due to its blind wall although alternatives are being investigated for installing sales.

 

Wall Parietodinámico

 

According to the Technical Building Code Energy Saver, It is defined as "an enclosure that uses solar energy to preheat outside air ventilation. It is generally formed by an inner sheet factory, an inner tube and outer sheet metal or glass that absorbs solar radiation. Air circulation can be natural (thermosiphon) or forced ". You will have the same orientation and characteristics Trombe Wall.

 

It has the same performance as the Trombe Wall, the only noticeable difference by definition is heating the air. Unlike Wall Trumpets, Outside air is preheated before being introduced into the interior of housing.

 

Greenhouse townhouse

 

According to the Technical Building Code Energy Saver, It is defined as a "unconditioned enclosure formed by an outer enclosure with a high percentage of glass surface that is positioned adjacent a building facades. The facade element that acts of separation between the greenhouse and the inner parts of the building may also include glazing. It is possible that there is a generally forced air circulation through said enclosure, in the form of air or recirculation preheating outside air used for ventilation. To this same category belong galleries and glazed balconies ".

 

The greenhouse attached functions as a Trombe Wall and Wall Parietodinámico. Unlike the walls, the greenhouse creates a living space to enjoy the hygrothermal comfort. This is not available in all buildings, but in some construction of an attached greenhouse it will be possible if there is a gallery or balcony where create the glazed space.

Source: Team www.inarquia.es

 

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