Zouk Mosbeh, Lebanon
College Notre Dame de Louaize
NDL School is situated in Zouk Mosbeh, Lebanon, which dates back to 1960. The school aims to renovate the existing building with reduction in energy consumption as the goal. The school aims to replace the building's aluminum windows and the lighting system. In addition, a new HVAC system and a roof insulation will be installed as well.
Project info
- Construction phase
- Refurbishment
- Building type
- Non-residential building
- Detailed building type
- Education
- Net floor area
- 40000 m2
- Stories
- 4 stories
- Construction type
- Concrete
- Original construction year of the building
- 1968
- Project contact
- Pere Charbel Haddad
- Contact email address
- p.charbelhaddad@cndl.edu.lb
Project team
- Energy efficiency consultant(s)
- Apave Liban
- HVAC consultant(s)
- Apave Liban
Building Rating and Certifications systems
- Rating and certifications systems
- Not applicable
Building Envelope
External walls
- Description of construction
- Double Wall (15cm - 3 cm gap - 10 cm) with cladding
- U-Value
- 1.21 W/(m²*K)
Roof
- Roof type
- Double Pitch Roof
- Description of construction
- Brick 5 cm - Sandwich panel 5 cm. The additional insulation to the roof structure has reduced the cooling load to 56.65 kW and resulted in a total savings of 4.2% of the total electricity bill.
- U-Value
- 0.37 W/(m²*K)
Openings and windows
- Glazing type
- Double glazed
- Frame material / description
- Aluminum
- Overall u-value window
- 2.78 W/(m²*K)
- Description of construction
- The previous thermal load was estimated around 369.74 kW, but with the new double glazed installations, a reduction of 130 kW is achieved. The new windows are double glazed with an aluminum frame, resulting in a U-value of 2.78 W/m2 compared to 5.8 W/m2 of the previous windows.
Basement floor
- Description of construction
- 30 cm concrete
- U-Value
- 1.92 W/(m²*K)
Technical Building Systems
Ventilation system
- Type of ventilation
- Free ventilation (windows)
Space cooling system
- Primary space cooling system
- Mounted single-split or window air conditioner│Usually a visible smaller system mounted outside the wall or above the window just supplying one room
- Description
- Inverter type AC unit with different capacities. The use of inverter AC units will save 7.06% of the total electricity bill.
- Manufacturer(s) / products
- Fuji
Water heater system
- Primary water heater system
- Dedicated electric heater (dedicated = just hot water generation)
Lighting system
- Primary lighting system
- Linear fluorescent lamps (LFL)
- Efficiency
- 60
- Description
- The old system was based on obsolete fluorescent T12 lamps with magnetic ballasts. The new system will use T18 fluorescent lamps with electronic type ballasts, which leads to energy savings and higher lumens output. The changes to the lighting system will lead to 1127 $/year savings.
- Manufacturer(s) / products
- Osram
Shading devices
- Type of shading system installed
- Static (fix) shading systems as part of the building architecture (e.g. Maschrabiyya, porch roofs, pergolas)
Final Energy Demand
- Energy carrier (1)
- Electricity
- Total specific final energy demand
- 19.5 kWh/(m²*a)
Financial Aspects
- Estimated costs of energy efficiency and renewable energy measures
- 599256 EUR
- Financing sources
- NEREEA Loan
- Financing/funding institution
- IBL Bank
