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Brisa.net Eco-Housing Complex
2002
I.V.V.S.A.
Paterna. Valencia
9,675 m2
EUR 3,970,354
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1. Most Important Goals

- To propose an alternative longitudinal bioclimatic housing block.

- Make a proposal for social housing, low cost, and allows a high quality of life.

- Decrease the maximum energy consumption of housing.

2. Architectural Solution

The proposed design contest a particular site, and a longitudinal block type to fit 54 homes.

The proposed solution consists of a block length divided by a central courtyard, which are vertical communication cores, social spaces, and thermal solar collectors.

The houses are of several different types are arranged along the north gallery.

The types are flexible, and the user can transform at will, depending on their specific needs. The freedom that gives users even extends to the front, so the facade becomes an organic entity in constant transformation.

To control the visual perception of a constantly changing façade, it has been covered by a set of colored metal mesh. Regardless of the variations that cut back, the screen provides visual stability to the whole. These screens also allow an economical and effective control of solar radiation.

When solar radiation is tangential to the mesh, it is shown dense and can not aravesar, so that cast a shadow behind it (summer). Conversely, when solar radiation passes in an orthogonal to the mesh, the crosses with ease, reaching the windows of the facade (winter).


3. Bioclimatic characteristics

1.1. Heat Generation Systems
The houses are heated by themselves, in two ways: 1. Avoiding cool: Due to its high thermal insulation, and having most of the glass surface to the south. 2. Because of his careful and special bioclimatic design, the home is partially heated greenhouse, solar radiation and electric batteries to your nightly rate. The metal mesh placed as a double skin in the galleries to the south, letting in plenty of sunlight in winter, through the windows, and heating by the greenhouse effect.

1.2. Fresh Generation Systems
In contrast, bioclimatic systems refresh, if you need to be very effective. The houses are cool in themselves, in three ways: 1. Avoiding hot, providing the bulk of the glass surface to the south (Metal screens, arranged as a double skin in the area south galleries, there allowed to pass solar radiation in summer); disposing of shading to direct sunlight and indirectly, and providing adequate insulation. 2. Cooling by a cooling system architecture that increases the effectiveness of cross ventilation. To do this, create a large shaded area north of the houses (the galleries of access), and there is a thick vegetation that holds a large volume of fresh air. This air passes through openings in housing north, and cool when the cross. 3. Evacuating the hot air outside the housing through the upper windows to the south, and through solar chimneys located on the roof gardens.

3. Storage systems
Generated during the cool summer night (for natural ventilation and outside due to lower temperature) is accumulated in the floors and interior load-bearing walls of high thermal inertia. In this way the houses remain fresh all day without any energy consumption. During the day, homes are not heated, because soda systems used.
The roof garden (about 25 cm. Of land) of high thermal inertia, in addition to proper isolation, and helps maintain stable temperatures inside the houses.

4. Transfer systems (heat or cool).
The fresh air through all the rooms of the houses, through grates Interior doors. When heated air rises and escapes through the leaves above the windows located on the south facade.

5. Natural ventilation
The ventilation of the building is a continuous and natural, through the very walls surround, allowing adequate ventilation without energy loss. This type of ventilation is possible as all materials are breathable (concrete, ceramics, lime-cement mortar, paint silicates), although the whole performance has a completely waterproof.

4. Outstanding innovations

- Use metal mesh as a false front for the control of solar gains to households.

- System-based precast concrete panels.

- Correct architectural integration of solar collectors in a linear block of flats.
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