Commercial office building
EFD has demonstrated that, even in a 4-star building with major efficiency programs underway, analytics are required to ensure buildings continue to perform optimally.
Learn MoreBuilding demographics
- A-Grade Commercial Office
- 4.5 Star NABERS Energy
- Redeveloped in 2003
- 40,700 m2, 22 Levels
- Siemens DESIGO BMS
Problem
- Complex and energy intensive HVAC systems with limited equipment level transparency
- Root causes of energy wasted difficult to detect and diagnose
- No way of understanding or managing peak demand
Envizi solution
- Equipment Fault Detection Module
- Software metering deployed on 49 items of HVAC equipment
Key insights
- Opportunities identified to reduce peak demand
- Equipment operating on public holidays (high rise)
- AHU start and stop times not optimized
- Inefficient chiller staging strategy (Smardt Chillers)
- Multiple boilers operating at very low loads (staging issue)
- Economy cycle dampers not being fully utilized
- Economy cycle dampers operating in heating mode
- Chiller short cycling (failed flow sensor detected)
- Return air fan left in manual override for extended period
- Cooling towers short-cycling during part load conditions
Highlights
- Envizi EFD was instrumental in achieving a 12% total energy reduction in 12 months, which increased the NABERS rating by 0.5 Stars. Additional cost savings are expected once peak demand reduction strategies are implemented.
Other success stories
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