Bioclimatic technology: the bioclimatic buildings
Bioclimatic technologies
For bioclimatic building means a building structure to meet its energy needs for the air-conditioned building with the use of passive solar systems which do not provide facilities therefore. An essential factor for passive heating is the maximum exposure to solar radiation and therefore the wider front of the building must be directed to the South
The passive heating of the environments exploits the selective behavior, compared to the solar radiation, just the glass that is capable of trapping within the environment the thermal radiation of the solar rays (greenhouse effect).
E 'therefore essential to have on the wall to the south a large glass area in cold climates must represent at least one third of the inhabited area 0.30 square meters of glass for Sup Sq decking.
Another factor to improve the living comfort is the reduction of heat loss by reducing the glass surfaces on the front to the north, increasing the degree of isolation of the dispersant surfaces (walls, roofs), creating the filter zones to the north between the living spaces and the ' external heat as a buffer. The corridors, service areas, warehouses, toilets and all the ancillary spaces that are not inhabited continuously should be placed mainly in the north. The external walls and roofs should have an air gap with a maximum thickness of cm. 10 to mitigate heat loss.
An important role is played by the colors of surfaces captanti: dark colors (red, brown, etc..) Increase the storage capacity of the internal surfaces of heat, while light colors outside increase the albedo and if placed on surfaces that reflect all 'internal solar radiation increases the thermal gain.
To prevent heat captured during the day to be released during the night you need to have thermal mass to store heat accumulation to be sold in the cooler hours. For this purpose are used as walls and floors, and any other structural element, which has adequate thermal capacity. The brickwork, concrete and earthen walls are all suitable materials to ensure adequate thermal storage. A wall of earth blocks cm thick. 25 is capable of guaranteeing an accumulation of heat such as to restrict the fluctuations in temperature over 24 hours.
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Source:
Italian version of ReteArchitetti.it