• Case Study Icons-10

    Facility Bio

    • Ft. Myers, FL
    • 835 bed hospital
    • Five (5) York VFD chillers of varying sizes
    • 5,200 tons cooling capacity
  • Case Study Icons-08

    Situation

    • Plant modifications over the years to meet growth compromised cooling reliability and efficiency
    • New expansion dictated major overhaul of chilled water system
    • Primary-Secondary hydronic design presented inherent issues:
      • low ΔT
      • high kW/ton
      • too many chillers often running
    • ALC BAS with traditional control sequence, no optimization
  • Solution

    • Convert system to Integrated Primary-Secondary® configuration to minimize flow and raise ΔT
    • VFDs on primary pumps to match secondary flow and to proportionally  load chillers with unequal pressure drops
    • Install second set of (3) variable speed secondary pumps for new addition
    • Install VFDs on condenser pumps
    • Integrate supervisory configuration of tekWorx CEO® system with BAS, physical I/O remains in place

Results That Exceed Client Expectations

  • Financial Results

    • $80,000 in annual energy savings
    • 2-year project payback
  • Energy Impact

    • 1,300,000 kWh saved annually
    • .32 kW/ton efficiency improvement
  • Operational Benefits

    • Fully automated system
    • Operators freed up for other important tasks
    • Reduced troubleshooting and response time

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