Towards sustainable buildings Case studies of innovation and technologies
Istanbul - April 21 - 2011
ASTALDI at a glance
• Astaldi is one of the most successful contractor in Italy and abroad, operating also as promoter of project finance initiatives and concessions manager.
Who is Astaldi?
• Transport infrastructures, water and renewable energy, civil and industrial buildings represent the Group’s key sectors, the ones where Astaldi operates as contractor and concession operator.
What does Astaldi?
• Listed on the Stock Exchange since 2002, Astaldi currently operates in 23 countries (Algeria, Brazil, Bolivia, Bulgaria, Chile, Costa Rica, El Salvador, Guatemala, Honduras, Italy, Nicaragua, Panama, Peru, Poland, Romania, Qatar, Saudi Arabia, Turkey, UAE, USA, Venezuela).
Where is Astaldi?
How ASTALDI reduces its environmental impact
Photovoltaics
Trigeneration
Geothermics
Insulating materials
LEDs
Solar thermal collectors
Wind power
Passive solar technologies
Inverters
Bio-fuels
Water recycling
through the use of…
Case study 1: ASTALDI head office in Rome, Italy (work in progress)
Energy Audit
Energy Saving Actions
Results
2,000 m2 of floor space
3 floors + basement
Population of 300 people
Case study 1: ASTALDI head office in Rome, Italy (work in progress)
Energy Audit
Illumination29%
Servers14%
Computers3%
Printers2%
Ventilation5%
Pumps3%
Space heating11%
Space cooling8%
Cooking6%
Water heating4%
Others15%
Categories Energy consumed by the building
Illumination 536.571 kWh 100 TEP 29%
Servers 263.052 kWh 49 TEP 14%
Computers 58.993 kWh 11 TEP 3%
Printers 35.191 kWh 7 TEP 2%
Ventilation 85.053 kWh 16 TEP 5%
Pumps 59.258 kWh 11 TEP 3%
Space heating 45.251 Sm3 37 TEP 11%
Space cooling 153.624 kWh 29 TEP 8%
Cooking 120.540 kWh 23 TEP 6%
Water heating 75.640 kWh 14 TEP 4%
Others 276.966 kWh 52 TEP 15%
349 TEP 100%
Case study 1: ASTALDI head office in Rome, Italy (work in progress)
Energy Saving Actions
Substitution of fluorescent lamps and halogen lamps with LEDs with an energy saving of illumination up to 60%.
External insulation: with the use of insulating materials based on nanotechnologies or natural fibers to increase the thermal resistance of the building.
Creating vertical gardens to improve thermal resistance and utilizing plants that absorb traffic pollution.
Photovoltaics: 2,544 CIS panels on roof, vertical walls and parking areas. A PV system with 184 kW of power rating with an energy production of 200,000 kWh/year.
Installation of a thermal solar system with a capturing surface of 50 m2 to produce 2,500 l/day of hot water.
Installation of a trigenerator with a simultaneous production of electricity, heating and refrigeration with an energy saving of 25% compared with a separate production.
Case study 1: ASTALDI head office in Rome, Italy (work in progress)
Results
60% of primary energy consumed
by the building will be saved by
the energy saving actions.
The building will produce energy
for itself.
Case study 2: ASTALDI CONSTRUCTION head office in Davie (FL-USA)
PV system power rating: 24kW
168 PV thin film modules
Building-Integrated Photovoltaics
363 m2 of PV area
30,000 kWh/year
20 tCO2/year saved (USA conversion factor)
Case study 2: ASTALDI CONSTRUCTION head office in Davie (FL-USA)
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Em [kWh/month]
A real-time monitoring system serves as an educational tool and continuously measures and shows the real electricity production and environmental offsets of the PV system.
Case study 2: ASTALDI CONSTRUCTION head office in Davie (FL-USA)
Other energy saving actions conducted through the use of the LEED guidelines
Installation on the roof of an insulation membrane with solar rays reflective capacities to reduce cooling energy consumptions.
Installations of high efficiency lighting.
Installation of motion control light sensors in common areas to minimize the amount of time lights are left on after employers walk away.
Introduction of more natural exterior light into internal office spaces through the use of interior office windows and reflective ceilings tiles.
Installation of in line instant-hot water heaters that heat only on demand and not all day long like a typical boiler.
• Leadership in L
• Energy &E
• EnvironmentalE
• DesignD
7.000 m2 transparent surface
“Double skin” façade system with a mechanically ventilated air gap
High levels of sound insulation
Case study 3: Hospital in Mestre, Venice, Italy
Functional surface areas: total 96.425 m2
7 floors above ground level + 3 underground floors
Availability of 680 beds
250.000 m2 green areas
Artificial lakes with water reserves
Case study 3: New hospital in Mestre, Venice, Italy
A winter garden inside the building
1.800.000 kWh/year of clean energy
Saving of 340 tep/year
Saving of 870 tCO2/year
Case study 4: Metro C – “Graniti” Station, Rome, Italy (work in progress)
Photovoltaic modules on parking areas: 450 kWp
Building Integrated Photovoltaics on 8 buildings: 1 MW
Case study 5: Nuovo Polo Fieristico, Milan, Italy
6 heat pumps with 1 MW of power rating
Geothermal system that uses well water as heat source
The system supplies heating and cooling to all buildings in the central corridor of the exhibition areas
Case study 6: Tuscan hospitals - Prato, Pistoia, Massa, Lucca – Italy (work in progress)
4 hospitals
Functional surface areas: total 200.000 m2
Availability of 1.710 beds
Cogeneration2.6 MWel
Photovoltaics
200 kW
Water recycling Inverters
Towards sustainable buildings Case studies of innovation and technologies
Istanbul - April 21 – 2011
Thanks for your attention!