Telecom Central Office Cuts Cost Without Disrupting Operations

tekWorx adaptive Control Engine Optimization® solution slashed chilled water costs and added redundancy to this mission critical facility with no downtime.

Facility Bio

  • Pittsburgh, PA
  • High traffic, downtown Central Office
  • 550,000 ft² downtown facility totaling 20 floors
  • Three (3) McQuay constant speed chillers
  • 4,500 tons cooling capacity
  • Mission critical, 24/7 operations

Situation

  • Major upgrade to chiller plant infrastructure
  • Upgrade could not disrupt Central Office traffic
  • Inadequate control redundancy for critical operation
  • Low ΔT and high kW/ton due to inefficient hydronic configuration and control sequence

Solution

  • Convert hydronic system to Variable-Primary configuration
  • Install redundant PLC-based Control Engine Optimization system(CEO®)
  • Integrate CEO® with Metasys building automation system

Results That Exceed Client Expectations

Financial Savings

  • $85,000 in annual energy savings
  • 2.3-year payback

Energy Impact

  • 1.3 million kWh saved annually
  • .36 kW/ton efficiency improvement

Operational Benefits

  • Control system upgraded to N+1 redundancy standard
  • Reduced troubleshooting response time
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