BUILDING DEMOGRAPHICS
- Inpatients Services Building
- Floor area: approx. 20,000m2 over 12 levels
- Operates 24 x 7
- Includes patient wards, operating theatres, isolation rooms, back of house facilities, carpark
- Siemens Apogee BMS
PROBLEM
- Experienced a significant increase in utility cost rates – need to reduce consumption to offset costs
- Time poor engineering staff – no way of proactively identifying faults or cost saving opportunities (highly reactive)
- Limited transparency of how HVAC systems were performing or where energy was being used
ENVIZI SOLUTION
- Equipment Fault Detection Module + Software metering deployed on 98 items of HVAC equipment (35 x Air Handling Units, 42 x Fans, 9 x Pumps, 3 x Chillers, 6 x Cooling Tower fans, 3 x Boilers)
Over $60k energy cost savings opportunities identified over the first 8 weeks of operation
KEY INSIGHTS
- Theatre AHU’s and RAF’s operating at full speed 24 x 7 – opportunity for theatre staff turn down when in standby mode using local overrides
- Car park fans operating when not required (very low CO levels)
- Opportunity to turn down Ward AHU’s during off-peak times
- Economy cycle dampers not being fully utilized across Wards & Theatres
- Unstable heating and cooling control loops on Theatre AHU’s
- Simultaneous heating and cooling in areas that don’t require dehumidification
- Heating hot water pump operating for extended periods when associated boiler is off
- All condenser water pumps operating for extended periods associated chillers are off
HIGHLIGHTS
- Enabled the Engineering team to gain much greater transparency of energy usage, faults and optimization opportunities
- Significant savings already being realised through implementing low-cost BMS fine tuning strategies (no CAPEX)
- Opportunity to expand technology to cover 5 additional hospitals in portfolio
