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Making a sustainable building is becoming a increasingly common concern.
Practices that save on electric bills and reduce CO2 emissions.
We meet in Lisbon two sustainable buildings with different functions.
One for professional use. The other for residential use.
The Solar XXI building, where the National Laboratory of Energy and Geology (LNEG)is located.
It was designed from the ground up with the aim of making a building energy efficient.
This building was built with a view of reducing both the need for the heating
and cooling needs of the building.
The fundamental idea is to collect maximum solar energy during the winter
and “let the sun outside” during the summer.
To lower the power consumption was adopted a set of measures integrating renewable technologies
such as photovoltaic panels and thermal and passive systems for heating and cooling environment.
These panels produce heat.
And so we think this project to recover heat from these panels to heat this building during a winter.
The user opens these holes in a very simple way.
Below and above.
And the exterior warm air will enter the interior of the building and it will heat the building.
Solar XXI does not have air conditioning. They opted for an innovative cooling.
It's a system of pipes buried under the building
in these tubes will circulate the air that will be cooled,
and then it'll go back into the building, already fresh.
That's what we call a “Cold Source” underneath the building.
The exterior shutters being used to keep out the direct sunlight,
the building insulation being applied from the outside,
are some other measures that contributed to the Solar XXI building
to be recognized internationally as an exemplary case.
Thinking about greater financial and energy savings 3 condo residents of São Bartolomeu,
rolled up their sleeves and created the largest micro-producer of residential solar power in Portugal.
Herique Relógio, one of the project leaders explains what was done:
We chose photovoltaic panel for energy production.
All energy is being sold to the National Grid (REN) under the legislation for microproduction.
And so it is with the income earned with the micro-production
that we managed to implement other measures and make other investments that allows
the condominium as a whole to effectively become an eco-condominium.
The next step involves the lighting.
The replacement of existing lighting with LED lighting in common areas, just to reduce consumption
We are also working to mobilize residents and then also make this substitution in the fractions.
Being an eco-condominium there's concern to sensibilize each owner to be energy efficient in his home.
For this awareness it were created 2 protocols:
One of them is with Lisboa e-nova - the Apollon project,
where it will take place a measurement of energy consumption in the residents' houses.
The other is a Quercus project - the EcoFamílias
That is directed to each owner.
The results of micro-production exceeded the expectations.
In the 1st year of production existing estimates were exceeded by 10%.
In the future, theses revenues will lower the monthly fee for each owner
and they have considered value in the real estate market.