Charlotte Hotel Achieves Instant Efficiency Through Intelligent Cooling Upgrade
A prestigious Charlotte hotel achieved remarkable efficiency from day one of implementation while maintaining exceptional guest comfort throughout the property.
28.6%
system efficiency improvement (kW/ton)
580,000
kWh saved annually
location
Charlotte, NC
size
1,200 tons capacity
industry
Hospitality
the problem
Battling Inefficiency
In the heart of Charlotte, North Carolina, a luxury hotel complex featuring 128 guest rooms, conference facilities, and dining amenities faced significant energy efficiency challenges with their cooling system.
Although the equipment was functional, the building automation system relied on standard control sequences, resulting in suboptimal performance at 1.05 kW/ton, a measure of energy consumption per ton of cooling, where lower numbers indicate better efficiency.
the solution
Instant Efficiency Gains Without Equipment Replacement
Management sought an optimization solution that would deliver immediate efficiency improvements while ensuring long-term operational benefits without requiring equipment replacement.
The property implemented Xpress®, an adaptive-control based chilled water optimization solution, seamlessly integrating it with their existing building automation system. The platform’s adaptive algorithms delivered sophisticated control through four key optimization strategies:
- Efficiency-based Chiller Sequencing: Intelligent management of the facility’s chillers based on real-time demand and performance metrics.
- Adaptive Pump Sequencing: Dynamic control of primary and condenser pumps to maintain optimal efficiency across varying load conditions.
- Chilled Water Optimization: Continuous adjustment of temperature and flow rates throughout the building to match actual cooling requirements while maintaining consistent comfort levels.
- Condenser Water Optimization: Real-time management of condenser water temperature and flow rates to maximize system efficiency and extend equipment life.
Intelligent control strategies unlocked substantial energy savings in an existing cooling systems without equipment replacement.
the results
Immediate and Lasting Savings
Xpress® transformed the hotel’s energy profile while enhancing operational reliability and guest comfort. The customized optimization platform delivered immediate efficiency gains that translated into long-term operational and financial benefits:
- Equipment Longevity: Reduced mechanical stress and wear extends operational lifespan, decreasing long-term capital expenditure requirements
- Energy Reduction: 580,000 kWh saved yearly through optimized operations
- Efficiency Gains: Monthly kW/ton efficiency improved by 0.30 kW/ton, representing a 28.6% improvement in overall system efficiency
- System Reliability: 99% optimization uptime across total plant run-time, ensuring consistent comfort for guests