Xpress Optimization Saves Hotel 900,000 kWh Annually
A 16 story mixed-use hotel and office building significantly reduced annual kWh by integrating the Xpress adaptive-control based chilled water optimization solution with their existing building automation system.
Facility Bio
- Austin, TX
- 392 bed hotel with office space and dining
- 3 chillers
- 2,160 tons
- Variable Primary system with dedicated primary pumps
- Variable Condenser Loop with dedicated condenser pumps
Situation
- Chiller plant replacement
- BAS using standard control sequence
- Owner needed “day one” optimization
- System operating at 0.79 kW/ton
Solution
- Implement Xpress Energy Efficiency Dashboard
- Xpress real-time adaptive algorithms including:
- Efficiency-based Chiller Sequencing
- Adaptive Pump Sequencing
- Chilled Water Temp and Flow Optimization
- Condenser Water Temp and Flow Optimization
Results That Exceed Client Expectations
Financial Savings
- $80,000 annual savings
Energy Impact
- 900,000 kWh saved annually
- .15-.25 monthly kW/ton efficiency improvement
Operational Benefits
- 96% optimization uptime/plant run-time
- Improved equipment performance extends operating life with less equipment wear and tear
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