Renovation & Extension – Education

Sector: Education Year: 2018 City: Libercourt, France Gross Floor Area (GFA): 5,670 sqm Total Cost: €13.2 million Scope of the Mission: Energy Project Management (~4 years: Program, Design, Construction, Commissioning, Occupancy, Maintenance)

Major renovation and extension of an educational facility, targeting ultra-low energy consumption and integrating HQE principles. The project combined RT2012-compliant extension design with advanced HVAC, renewable energy systems, and optimized building envelope performance.

Detailed Assessment
  • HQE approach with ultra-low consumption retrofit target.
  • Extension compliant with RT2012 standards.
  • External insulation with high-performance double glazing.
  • LED lighting with dimming controls for energy optimization.
  • Airtightness target: Q4 < 1.7 m³/h·m².
Performance Evaluation
  • Gas condensing boiler with hydro-ejector technology.
  • Solar pump hot water system for domestic use.
  • Seasonal energy performance monitoring.
Diagnostic Testing
  • Envelope airtightness verification and blower door testing.
  • Thermal imaging for insulation quality control.
  • Commissioning tests for ventilation and heating systems.
Maintenance Review
  • Training of operators for efficient HVAC and renewable system management.
  • Preventive maintenance protocols for solar hot water systems.
  • Integration of performance benchmarks in facility management.
System Optimization
  • Balancing ventilation rates for energy and comfort.
  • Fine-tuning heating production to match seasonal demand.
  • Integration of dual-flow AHU with heat recovery >85%.
Efficiency Improvement
  • Energy and water monitoring system for real-time tracking.
  • Reduced energy consumption target: <50 kWhep/m²·year.
  • Continuous performance improvement through operational feedback.

Result: A high-performance educational building meeting stringent energy standards, integrating renewables, and achieving exceptional operational efficiency.