TetraEner
est un projet CONCERTO (6ème programme cadre de recherche)
de la Commission européenne qui soutient par ce biais les activités
de recherche et de démonstration dans le cadre de la réalisation
du projet Genève - Lac - Nation (GLN).
Mots clés
Cold/hot network, lake, buildings, environmental impacts
Sites
officiels du programme Concerto
/ projet Tetraener
Equipe
Reto Camponovo, Gilles Desthieux, Claude Willemin
Responsable
du projet pour l'EIG
reto.camponovo@leea.ch
Partenaires
Service
cantonal de l'énergie (ScanE), Ecole polytechnique fédérale
de Lausanne (EPFL), Université de Genève (UNIGE), Sevice
industriels de Genève (SIG), Bonnard et Gardel, Ente Vasco
de la Energia (EVE), Vivienda y Suelo de Euskadi (VISESA)
Résumé
TetraEner
is a european integrated project included in the sixth framework Priority
6.1 “Sustainable energy systems”. This project is based
on the premise of creating residential and administrative communities
where external energy dependency is reduced by optimising the supply/demand
balance through an improvement in energy efficiency and the use of
renewable energy sources, together with demand monitoring and control
applications.
TetraEner encompasses two new urban developments in the cities of
San Sebastian (Spain) and Geneva (Switzerland). These communities
can offer a series of synergies with regard to the priorities set
out in the CONCERTO initiative : Large-scale integration of renewable
energy sources, Eco-buildings, polygeneration, energy storage and
supply assurance.
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Geneva project objectives
1)
Low Temperature Exchange Network
Lake Geneva can be seen as a virtually unlimited source of perfectly
renewable and non-polluting energy that can be used to provide heating,
cooling and water services. Water is drawn from a depth of 30 meters
and is distributed through a hydraulic network at a temperature lower
or equal to 10°C, to heat or cool buildings in the area. The network
also serves as a thermal exchange medium and as a source of non-potable
water.
2)
Related objectives
Sustainable development requires a global energy management strategy
that goes beyond the design of low energy consumption buildings. Within
the frame of the Genève-Lac-Nations project, new methods will
be developed, taking into account the energy and environmental aspects
of future energy flows of the given perimeter. Objectives are :
- Achievement
of 100% renewable electricity use by the building participating
to the GLN project upon completion of the project (5 years)
- On public
buildings, construct roofs designed to receive solar panels in the
future
Collect rooftop rainwater to irrigate landscaping and flush the
building’s toilets
- Adaptation
of existing buildings to heat distribution techniques compatible
with weak temperature gradients, close to operating temperatures
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Our Activities
I.
SIA (Swiss) quick auditing method. Bâtiments
vitrés - Confort et efficience énergétique. The
goal is to develop a methodology for auditing the existing buildings
for their integration into the thermal exchange network, if possible
by using an available audit method or by creating an extension of
an available method. Based on experience gained with recently constructed
offices with precise parameters, this study describes winter and summer
behaviour of highly glazed buildings. We were interested in the part
concerning summer and used the calculation of the total heating contribution
of one room. This consisted of 3 phases:
-
Evaluation of average solar heat contribution in [Wh/m².day]
-
Estimation of internal heating contribution in [Wh/m².day]
-
Total heating contribution in [Wh/m².day]
II.
Development of a methodology and associated tools of energy land
use and district planning. The methodology aims at providing
support for urban development projects from the strategic to the operational
levels, so as projects meet the objectives of sustainable and rational
use of energy. It is intended to constitute a referential that emphasises
for each stage of planning important energy aspects and issues to
be taken into account, relevant data and information, involved stakeholders,
tools and procedures to be implemented. The main postulate is that
energy planning should be integrated in the early stage from the master
planning of a given area or project. The objective is to give relevant
indications on local energy potentials (diagnosis), and directives
on how using these potentials to be then implemented in operational
land use plans. In particular, we are developping GIS tools that stores
all the data about the availability of various natural energy sources
in a region area (Canton of Geneva). Using spatial analysis tools,
it enables quantify the potential of these sources and display them
as indicator maps displayed on Internet via a WebGIS (link to be communicated
soon).
III. EIG organises
and manages training programs and activities that aim at:
- increasing
the competencies of professionals and upgrade their knowledge in
view of recent technological developments (including the results
of the Tetraener research and demonstration activities),
- motivating
youth, teachers and professionals to act towards the objectives
of Geneva’s energy policies.
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