Sustainable buildings for non-residential use

Analysis of non-use sustainable buildings residential.

Green Office Building (Paris):

This is an office building in France, located very near paris, which presents a north-south orientation of its main facades, allowing to optimize the use of light and avoid excessive solar radiation. It has been designed as a positive energy building , capable of contributing the excess energy to the electrical network.

The design and interior layout of the building has been made in such a way that all spaces have windows, being a reinforced concrete construction. The surround allows total comfort inside, with minimum energy demands since it has an insulation 20 cm thick thermal, as well as glazing double layer.

It has a landscaped façade on the west side, as well as of suspended fans to improve and favor ventilation conditions and air circulation adequate.

The building is an example of energy self-sufficiency as it has a consumption of 62 kWh/m2 per year compared to 64 kWh/m2 per year generated by photovoltaic panels and a system CHP-type cogeneration.

Barredo Foundation bioclimatic offices in Siero (Asturias)

This three-story office building stands out for its bioclimatic design efficient , allowing adequate conditioning thermal as well as by the implantation of renewable energies. His design is articulated around three Y-shaped arms, open to three different orientations, to achieve maximum use of light and solar radiation, applying different strategies to optimize and improve their efficiency, the following stand out:

• Its thermal envelope is heterogeneous, and has been resolved with various types of facades, ventilated facade with stone Covadonga red and chestnut wood, glass curtain wall combined with photovoltaic panels and galleries that act as solar greenhouses. A thickness of different thermal insulation for each of the facades in each wing, which varies depending on each orientation. It has overhangs on the roof as elements of shading.

• Under the foundation there are some tubes of cooling of hot water from absorption pumps, controlling the temperature by means of sensors that are have placed on the ground and pipes.

• Solar thermal energy has been installed to cover the domestic hot water demand, having a biomass boiler and a system of geothermal wells, It also has photovoltaic panels to generate electricity. The air conditioning and ventilation systems are are fully monitored.

ENVITE office and workshop building (Asturias)

This building presents a design of maximum use passive from the bioclimatic point of view, optimized in depending on the environment where it is located and the characteristics climate of the area. It has an office area and another for industrial use where workshops and classrooms are concentrated of the Lince Asprona-Fundación Personas group, which is a association dedicated to the training and hiring of people with intellectual disabilities. Submit a rating energy A , with a design that chooses to use elements of plant envelopes and the use of energy renewable. Endesa was awarded the promotion no most sustainable residential area in 2011.

The building manages to implement different strategies to reduce energy demand, highlighting for example the specific treatment of each façade according to its orientation, Likewise, the design and arrangement of façade openings has been performed efficiently, since most of the They are located in south orientation, and have been reduced in the north. In addition, the following strengths stand out:

• It has a bioclimatic atrium, which works by attenuating the weather effects from outside, so that the its cover can be closed in winter and opened in summer to allow better ventilation and attenuate the effects of heat.

• Ventilated exterior façade in the office area by means of a light enclosure with a wooden substructure and high density rock wool insulation with solar protections in the openings by means of slat systems orientable. For the facades in the industrial area, they use precast concrete panels.

• Garden roof that allows the evaporation of water in summer reducing the contribution of solar radiation by the roofs (in summer also when the sun is higher, the roofs receive a lot of solar radiation and It is in the interest of reducing it as much as possible, therefore, along with the atrium, are very successful strategies), in autochthonous aromatic species have been planted on it. It also has blinds that close upwards. to avoid dazzling the lower working area and allow the sun to collect in the upper area.

• It also has a garden in the arcade area that helps to cool and regulate the temperature, on the ground floor and a plant pergola in the southern area with species autochthonous, as well as a system for the collection and subsequent reuse of rainwater for irrigation of the plant species of these gardens.

• As far as ventilation is concerned, along with the design that promotes natural ventilation and night ventilation, also has Free-cooling and double flow heat exchanger.

• As efficient facilities and clean energy the building uses a surface of 65 m2 of collectors solar thermal, as well as photovoltaic panels for electricity, and has a heat pump installation geothermal for heating and cooling, boilers biomass and absorption machine for the production of cold solar. All building facilities are controlled by a management and control system that allow adapting its use to the operating regime of the building. The monitoring system allows knowing if the placed elements work and are efficient.

Note that materials have also been used that generate minimal environmental impact, such as the wood used in the structure and false ceilings, which is certified with quality seal that guarantees this appearance and insulation completely natural and respectful with the environment atmosphere.

Hotel Bonapace in Torbole (Italy)

This is a Passive certified hotel building House located on the lake di Garda in Italy. This hotel has been built mainly using wood, combined with other insulating materials and presents a terrace type solarium in which the solar panels are located as well as the power station that contains the ventilation systems with heat recovery.

The building unifies bioclimatic design with energy renewable to achieve Passive House standards, It has 20 rooms whose holes are solved with triple glazing and has a mechanical ventilation system silent with a network of supply and exhaust ducts return with heat recovery units.

The façade presents glass wool thermal insulation of 96mm. thick and achieves a transmittance value of 0.119 W/m2 K. The openings have triple glazing with gas argon in the chambers, with a thermal transmittance of 0.6 W/m2 K and a solar factor g of 48%. The cover It also presents a 10 cm thick glass wool insulator. thickness and reaches a very low value in the transmittance of 0.08 W/m²K, in the case of a typical terrace solarium in which the solar panels are located as well as the thermal power station that contains the ventilation systems with heat recovery.

On the roof there are 15 m2 of collectors for the solar thermal energy together with a heat pump to meet the demand for domestic hot water and heating. In addition, the entire building has been built with wooden structure from managed forests of sustainably, with PEFC certification.

If you liked it you can also see « Examples of sustainable homes and renovations «.

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Article prepared by José Luis Morote Salmeron (Technical Architect – Energy Manager - Google profile plus) Access to your website HERE, in collaboration with Home Repair Care .