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Our home is like a mirrored shell, it reflects our idea of comfort, it provides protection, it fits our needs, it reflects our attitude towards the environment, so the greenER… the better.

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Two principles out of the “BILL OF RIGHTS FOR THE PLANET”

(William McDonough architects for EXPO 2000 held in Hannover,Germany)

Insist on the right of humanity and nature to co-exist in a healthy, supportive, diverse, and sustainable condition.

Understand the limitations of design. No human creations lasts forever and design does not solve all problems. Those who create and plan should practice humility in the face of nature. Treat nature as a model and mentor, not an inconvenience to be evaded or controlled.

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Sustainable architecture revolvs around two basic principles:

Minimisation of

Energy consumption

Building orientation

Thermal insulation

Natural ventilation

Window placement, sizing and shading

Heat absorbing building material

Autonomy in terms

of energy

Energy efficient appliances

Use of renewable resources

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● Save money on energy costs

• Reduce impact on the enviroment through the decreased use of fossil fuels

• Increase comfort of effective natural lighting and ventilation

• Improve resale value of your home due to lower power bills

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Active solar design includes systems to harness solar energy by means of solar panels and photovoltaic panels.

Passive solar design harnesses the benefits of the sun using standard construction features making use of the sun, in terms of daylight and heat, to maintain comfortable temperatures.

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The envelope should allow the building to breathe

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WINDOWSINSULATION SOLAR TUBE

PHOTOVOLTAIC TILES

WATER SAVING TOOLS

HEATING & COOLING

LANDSCAPING

APPLIANCES

ORIENTATION

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Solar power tiles can be installed to produce electricity. They collect solar radiations from the sun and convert that energy into electricity.

Thermal solar panels use solar radiations to integrate the heat pump in the production of hot water.

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A solar tube consists of a clear dome that collects sunlight into a polished and reflective tube that reflects the light down to a diffuser on the ceiling bringing natural daylight into interior rooms.

They are inexpensive and unlikely to experience problems like rain leaks, heat loss, condensation or overheating.

The light provided has a natural quality and is sufficient for a small room, hallway or staircase.

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Standard kitchen and bathroom water faucets use 15 to 26 litres of water per minute. High-efficiency showerhead and faucet aerators reduce the flow rate. This conserves water and improves faucet performance at the same time. Low-flow heads save 44% over non-conserving showerheads.

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The Dual Flush toilets allow water saving giving the possibility to choose the most appropriate water saving flush (3 litres flush or a standard 5 litres flush).

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Mineral wool is a porous material that traps the air, which makes it one of the best insulating materials. The porous and elastic structure of the wool also absorbs noise in the air. Since it contains incombustible materials, mineral wool does not fuel fire or propagate flames.

Material Characteristics and properties

Main applications

Glass wool Lambda (λ ) (thermal conductivity) Acoustic Flexible and light Not very expensive

Roofs WallsCladding Ceilings and partitions

Stone wool Mechanical Fire resistant Acoustic

Sandwich panel Steel frame roof Floor (acoustic)

Good insulation can reduce the heat

transfer and energy loss to one sixth

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Ideally, the long side of the house faces directly south and shorter sides face east and west. This arrangement captures heat and natural light in winter, but minimizes unwanted summer heat gain.

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A geothermal heat pump pumps heat to or from the ground. It uses the heat of the earth to provide heating, conditioning and hot water. It is used both for cooling and for heating. In the winter, it moves the heat from the earth into the house. In the summer, it pulls the heat from inside the house and discharges it into the ground Geothermal heat pumps reduce running heating/cooling costs up to 25%-50%.

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Radiant Floor Heating Systems supply heat directly to the floor of a house.They consist of a system of pipes located beneath a house floor that continuously circulate warm water. The warmth from the water transfers itself to the metal of the pipes and then radiates to the floor above, heating it. They provide a 15-40% energy saving over traditional heating methods since a lower temperature is needed to maintain thermal confort.

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Selection and placement of plants can help control sunlight. Trees must be carefully selected. A “solar friendly” tree is a deciduous tree that has a low density branch structure, drops its leaves early in the fall, and regains them late in the spring.

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U-value : heat-transfer coefficient value for windows

• Large windows should be positioned on the south side, in order to allow the winter sun to warm internal spaces

• During the summer some sort of shading device should be used to keep out the hot summer sun

• Double or triple glazed windows can prevent loss and gain inside the house

TYPICAL U-VALUES

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Consumption by all-electrical appliances and lighting represents about 55% of theelectricity used byhouseholds. The energy label on appliances tells how energy efficient the appliance is and the energy consumption per year in kWh.

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The table below shows a comparative example between the consumption of a traditional building and a bioclimatic one. Savings can be up to 67%.

The energy standard of a building is commonly measured by the energy consumed for heating and cooling (kW/h) per square metre of building surface (m2) and usually over a year.

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Thank you for your attention !

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