Name of organisation: Unica Soc. Coop. Firenze
Stage of development: completed
Year of finalization: 2010
Type of project: construction
Area: rural
Scale: group of buildings
Type of building: Apartment in a block of five or less stories
Number of units/dwellings: 84
Tenure: cooperative ownership
Street: Largo Aldo Capitini
Postcode: 50019
City: Sesto Fiorentino
Region/ County: Toscana
Country: Italy
Last Update: 03.03.2015
The development, set in the outskirt of Sesto Fiorentino in a green area, is part of a larger construction development for more than 600 living units, office premises, commercial spaces and recreational spaces.
Certification
Energy Class A for all the living units.
Project Management
All the materials being used are certified. Certifications have been verified by the Developer during the construction stage. The energy consumption monitoring started in 2010.
Capacity Building
The Coop. Staf is involved in educational programs to keep up to date with the sustainable design practices and energy certification. Unica has established collaborations with educational bodies such as the University of Florence and with energy supply companies.
Work with Residents
The householders received a booklet containing all the relevant information to use the flat ant the technical services correctly.
Thermal Insulation
In general, the thickness of walls is 30 to 50% more than commonly used in the area.
Heating and Hot Water
In this new development area, a tri-generation district network provides for heating, cooling and hot water. Fan coil units have been chosen to supply heat and cooling. Each flat has divisional meters for accounting own share of heat, cooling and hot water.
Electricity Saving Products
Energy saving bulbs has been used for the lightning of the external spaces.
Water Saving
Double flux toilet boxes, flux reducers installed at the water tabs.
Environmental Design
Some of the bioclimatic solutions adopted:
Funding
Energy efficient measures table:
Energy efficiency measure | Ir | Iee,gross [€] | Iee,netto [€] | Life time [years] |
[€] | ||||
Thermal insulation | - | 207 000 | 207 000 | 30 |
Trigeneration | - | 80 000 | 0 | 15 |
Total | 10 350 000 | 287 000 | 207 000 |
|
Running costs | 20 002 | 20 002 | 20 002 |
|
Simple payback time |
| 14 | 10 | 27,5 |
The monitoring for the period 2013-2014 points out energy savings of around 40%, since the building is now almost completely inhabited. Residents pay a fixed price for the energy supply service, which includes the running costs (energy consumption for heating / cooling and system maintenance). This implies that energy savings of 40% does not mean an expenditure reduction of 40%. However, annual average costs for the energy supply service are in line with those expected: energy costs are lower than standard building ones by about 10-20%.
Ms Rossana Zaccaria
Legacoop Abitanti - The Italian Federation of Housing Cooperatives
E-mail: r.zaccaria@ancab.coop
Web: www.legacoopabitanti.coop