Education Renovation & Extension
Renovation and extension of an educational facility targeting ultra-low energy consumption under HQE principles, with an RT2012-compliant extension. The project combined high-performance envelope upgrades, advanced HVAC, heat-pump DHW, and comprehensive energy & water monitoring to sustain performance in operation.
Detailed Assessment
- HQE approach with ultra-low consumption retrofit target.
- Extension designed to RT2012 standards.
- External insulation with double-glazed windows.
- LED lighting with dimming controls.
- Airtightness objective: Q4 < 1.7 m³/h·m².
Performance Evaluation
- Gas condensing boiler with hydro-ejector technology.
- Heat-pump DHW system integration and sizing review.
- Dual-flow AHU heat recovery >85% (seasonal check).
Diagnostic Testing
- Blower-door airtightness verification and leakage tracing.
- Thermal imaging to confirm insulation continuity.
- Commissioning tests for ventilation, boiler, and HP-DHW systems.
Maintenance Review
- Preventive maintenance plan for HVAC and HP-DHW.
- Operator training on controls, alarms, and seasonal tuning.
- Asset register with performance benchmarks and meters.
System Optimization
- Balanced ventilation rates for comfort and efficiency.
- Condensing boiler return-temperature management.
- Setpoint and schedule optimization aligned with occupancy.
Efficiency Improvement
- Energy & water monitoring for real-time tracking.
- Energy consumption target: < 50 kWhep/m²·year.
- Continuous improvement via seasonal recommissioning.
Result: A high-performance school achieving sub-50 kWhep/m²·year, with robust monitoring and operating practices that preserve efficiency and comfort over time.