Tunis, Tunisia
Construction of an office building.
The Planet Immo company built an office building on the lakeside of Tunis, in Tunis in 2008. This office building comprises 3 floors and has in total a built-up area of 2740 m². The main measures to save energy are the thermal insulation of roof terraces and exterior walls, the use of double glazed windows and window shades, and the use of energy efficient heat pumps. The implementation of these measures has resulted in an annual energy savings of electricity of around 565 MWh.
Project info
- Construction phase
- New construction
- Building type
- Non-residential building
- Detailed building type
- Office
- Net floor area
- 2740 m2
- Land plot size
- 5043 m2
- Stories
- 3 stories
- Construction type
- Mixed construction
- Original construction year of the building
- 2008
- Project contact
- Planet Immo Company
- Contact email address
- contact@planet.net.tn
Project team
- Developer(s)/owner(s)
- Planet Immo Company
- Architect(s)
- ARCHI Architecture Company
- Energy efficiency consultant(s)
- Mr. Mounir Kriaa
- HVAC consultant(s)
- EUREKA HVAC Engineering Company
- Other project team partners
- Electricity: ASSISTECH, Steering and Coordination Company: SECOTEB, Technical Inspection: VERITAS
Building Rating and Certifications systems
- Rating and certifications systems
- Other
- Other certification
- The building acheived the 5th rating per the Tunisian Thermal Regulation (110 kWh/m².a)
Building Envelope
External walls
- Description of construction
- The external walls are constructed with the following components: an interior coating of 2.5 cm, a 15 cm concrete wall, a 5 cm layer of glass wool panels, a 5 cm air blade, and a 1.5 cm sandstone ventilated façade.
- U-Value
- 0.57 W/(m²*K)
Roof
- Roof type
- Flat roof
- Description of construction
- 2 cm interior coating, a 10 cm armoured concrete layer, a 12 cm aerated concrete slope, a 0.3 cm bitumen coat, a 0.3 cm SP2 vapour barrier, a 4 cm rock wool layer, a 0.4 cm waterproofing membrane, and a 4 cm dalette
- U-Value
- 0.41 W/(m²*K)
Openings and windows
- Glazing type
- Double glazed
- Overall u-value window
- 2.3 W/(m²*K)
- Description of construction
- The window bays are constructed with frames made from aluminium and low-e double glazing, with a thickness of 8/8/6 mm. The low-e coating is integrated on the interior glass.
Basement floor
- U-Value
- 2.2 W/(m²*K)
Technical Building Systems
Ventilation system
- Type of ventilation
- Free ventilation (windows)
Space cooling system
- Primary space cooling system
- Efficiency
- 3.3
- Description
- The building's space cooling is provided by a system that relies on two high-performance air-water reversible heat pumps featuring advanced scroll compressors, which ensure optimal efficiency and reliability., and fan coil units
- Manufacturer(s) / products
- Carrier
Space heating system
- Primary Space heating system
- Heat Pump (air-water)
- Description
- The building's space heating is provided by the same system of air-water reversible heat pumps and fan coil units.
- Manufacturer(s) / products
- Carrier
Lighting system
- Primary lighting system
- LED (Light emitting diode lamps)
- Efficiency
- 100
Shading devices
- Type of shading system installed
- Static (fix) shading systems as part of the building architecture (e.g. Maschrabiyya, porch roofs, pergolas)
- Description
- The bay windows are fitted with aluminium sunshade slats, which provide effective solar shading and represent a practical solution for reducing solar heat gain. The angled design, at 60° to the windows' normal angle of incidence, provides effective protection for southeast and southwest facing bay windows. This solution allows for the obstruction of direct solar radiation while maintaining the natural lighting of the interior spaces.
Final Energy Demand
- Energy carrier (1)
- Electricity
- Total specific final energy demand
- 88 kWh/(m²*a)
