Commercial Implementing various energy efficiency measures in an office building
Nature of the project
Existing facility
Description
The following devices or measures were installed:
- High‑efficiency cooling system with variable speed drive (VSD) compressor
- Hot‑water thermal storage (with high‑caloric-density bricks) for demand response management
- LED fixtures featured on the DLC Premium list in a 10,000‑m2 office building
- Adaptive controls
- Heat wheel (heat recovery from fresh air)
- VSD‑equipped 100% fresh‑air HVAC systems
- Thermal storage unit (hot water storage tank) for power management
- Drain-water heat recovery
- Additional roof insulation
- Triple‑glazed windows
Area of activity
- Commercial (e.g., head office of a large corporation)
Total
financial support
$453,405
Project details
| Measures implemented | Financial support |
|---|---|
| Installation of a 250-TR water-cooled centrifugal chiller with an energy efficiency ratio (EER) of 21.50 Btu/hr/Watt | $10,945 |
| Cooling system with variable speed drive (VSD) compressor | $4,550 |
| Installation of seven hot‑water storage (high‑calorific‑density bricks), each with a capacity of 80 kWh | $31,200 |
| 1,100 LED light fixtures featured on the DLC Premium list (financial support of $40/fixture) | $44,000 |
| Installation of 1100 adaptive controls on fixtures | $21,450 |
| Heat recovery through the heat wheel installed on the 100% fresh‑air intake system (10,000 L/s) | $302,835 |
| Variable-frequency drive with CO2 sensor installed on the 100% fresh-air intake system | $21,520 |
| Installation of 10 grey water heat recovery units (financial support of $250/unit) | $2,500 |
| 1,000 m2 of roof insulation installed (heat resistance of 1.50 m2∙°C/W) | $4,895 |
| 800 m2 of triple-glazed windows installed (U = 1.60 W/m2∙°C) | $9,510 |
| Total | $453,405* |
Benefits of the measures and program
- Heating
- Reduced heating needs due to improved thermal envelope efficiency
- Reduced power demand due to the thermal storage unit
- New cooling system
- Less electricity used for air conditioning
- LED lighting
- Guaranteed energy efficiency of LED fixtures qualified by DesignLights Consortium
- Up to 48% less electricity used when lighting with DLC Premium light fixtures compared with the market benchmark
- Save even more with adaptive controls designed to adjust lighting to meet needs
- 100% fresh-air intake system
- Reduced heating costs through heat recovery and installation of a VFD with a CO2 sensor
- Reduced domestic hot-water heating costs due to heat recovery systems
- Simplified financial support calculation with the OSE tool
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