Sfax, Tunisia
Residential units for the personnel of the SEACNVS.
The Company for Studies and Development of North Coast of the City of Sfax (SEACNVS) built three residential units for its personnel in Taparura, Sfax in 2017. This multi-family house, which forms part of the company HQ building, comprises 2 floors and has in total a built-up area of 611 m². The main measures to save energy are thermal insulation of exterior walls and roofs, the use of efficient windows, the installation of energy-efficient lighting systems, the installation of energy-efficient heating and cooling systems, the installation of solar water heating systems and grid-connected PV systems for electricity self-production.
Project info
- Construction phase
- New construction
- Building type
- Multi Family House (MFH)
- Detailed building type
- Multi Family House (MFH) - Small (≤ 1000m²) - detached
- Net floor area
- 611 m2
- Land plot size
- 1273 m2
- Stories
- 2 stories
- Construction type
- Mixed construction
- Original construction year of the building
- 2017
- Project contact
- Company for Studies and Development of the North Coast of the City of Sfax “SEACNVS”
- Contact email address
- projet.taparura@seacnvs.com.tn
Project team
- Developer(s)/owner(s)
- Company for Studies and Development of the North Coast of the City of Sfax (SEACNVS)
- Architect(s)
- Mr. Lotfi Rejeb
- Energy efficiency consultant(s)
- Arch.: Mr. Ahmed Frikha & Eng.: Mr. Adel Gabsi
Building Rating and Certifications systems
- Rating and certifications systems
- Other
- Other certification
- The building has acheived the 3rd rating per the Tunisian Thermal Regulation (45 kWh/m².a)
Building Envelope
External walls
- Description of construction
- The 3rd and 4th floors have double brick walls (E/N/W), insulated with rock wool in the middle and exterior polystyrene, and plastered inside. The south façade also has a double brick wall with rock wool insulation in the middle and plaster interior.
- U-Value
- 0.87 W/(m²*K)
Roof
- Roof type
- Flat roof
- Description of construction
- The fourth-floor terrace has an armoured concrete slab, concrete slope, and Perlite insulation at the top. The third-floor terrace is vegetated, with layers of earth, stone, cement mortar, concrete slope, and expanded polystyrene.
- U-Value
- 0.57 W/(m²*K)
Openings and windows
- Glazing type
- Double glazed
- U-Value glass
- 1.6 W/(m²*K)
- Frame material / description
- The frame is constructed from aluminum.
- Overall u-value window
- 1.92 W/(m²*K)
- Description of construction
- The windows are constructed with an aluminum frame and 6/6/6mm bronze double glazing.
Basement floor
- Description of construction
- Not applicable as adjacent to the floor below.
Technical Building Systems
Ventilation system
- Type of ventilation
- Free ventilation (windows)
Space cooling system
- Primary space cooling system
- Centralised chiller │Usually a central system located in the basement
- Efficiency
- 3.25
- Description
- The space cooling for each apartment is provided by an energy-efficient chiller with unencased fan coils.
- Manufacturer(s) / products
- TRANE
Space heating system
- Primary Space heating system
- Gas condensing
- Description
- The space heating for each apartment is provided by a combi system comprising a wall-mounted gas condensing boiler with integrated solar thermal hot water system, which serves an underfloor heating circuit.
Water heater system
- Primary water heater system
- Combi system (system provides space heat & hot water)
- Description
- The sanitary water heating is provided by the same space heating system, which is a combi system.
Lighting system
- Primary lighting system
- Compact fluorescent lamps (CFL)
- Efficiency
- 60
- Description
- The lighting system comprises spotlights with compact fluorescent lamps (CFL) and spotlights with LED lamps.
- Secondary lighting system
- LED (Light emitting diode lamps)
Photovoltaics
- Capacity
- 7 kWp
- Description
- Each apartment is equipped with a 2.34 kWp grid-connected PV system.
Final Energy Demand
- Energy carrier (1)
- Electricity
- Energy carrier (2)
- Gas a
- Total specific final energy demand
- 36.5 kWh/(m²*a)
