Don eppelheimer, trane

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  • 1. EarthWise TM Chilled Water Systems Consume Less Energy, Less Capital, and Less Water Donald Eppelheimer, PE Chilled Water Solutions Trane Company LaCrosse, WI deppelheimer @ trane.com
  • 2. Annual Energy Consumption Chilled Water Systems Chiller Cooling Tower Water Pumps 1972 2010 73% 9% 18% 56% 27% 17%
  • 3. Chilled Water System 10,000 cooling tons Dubai, UAE 7 0 C 40 0 C
  • 4. Benefit of Colder Chilled Water TMBH EWT WTR LPS 576.5 7 C 6 C 7.3 575.6 5 C 9 C 4.8
  • 5. 24000 18000 12000 6000 MWH chilled water 7 0 C 5 0 C chillers tower fans pumps Benefit of Colder Chilled Water
  • 6. EarthWise Chilled Water Systems
    • Colder chilled water reduces energy consumption
      • Chilled water pumps
  • 7. Chilled Water System 10,000 cooling tons Dubai, UAE 7 0 C 40 0 C 5 0 C 44 0 C
  • 8. Cooling Tower Capital Cost 10000 ton chilled water system 30,000 gpm 20,000 gpm 15,000 gpm 9 cells 23 x 127 ft 386,000 lbs 8 cells 23 x 113 ft 341,000 lbs 6 cells 23 x 85 ft 257,000 lbs
  • 9. Cooling Tower Capital Cost
    • Cooling tower capital cost is not a function of chiller capacity
    • Cooling towers are sized by the amount of water they process
  • 10. Cooling Tower Energy Cost 10000 ton chilled water system 675 hp 360 hp 225 hp 40/34/30 44/34/30 42/34/30 30,000 gpm 20,000 gpm 15,000 gpm
  • 11. 24000 18000 12000 6000 MWH chilled water 7 0 C 5 0 C tower water 44 0 C chillers tower fans pumps Benefit of Warmer Tower Water
  • 12.
    • Colder chilled water reduces energy consumption
      • Chilled water pumps
    • Warmer cooling tower water saves energy
      • Condenser water pumps
      • Cooling tower fans
    EarthWise Chilled Water Systems
  • 13. Compressor Energy lift refrigerant mass flow compressor work
  • 14. Compressor Energy lift cooling capacity compressor work 40 C 7 C 33 C
  • 15. Thermodynamic Staging 44 41.5 39 36.5 34 16 13 10 7 4 lift 32.5 C
  • 16. lift cooling capacity compressor work 44 C 4 C ~32 C Thermodynamic Staging
  • 17. 24000 18000 12000 6000 MWH chilled water 7 0 C 5 0 C tower water 44 0 C series chillers chillers tower fans pumps Benefit of Series Chillers
  • 18. Cooling Tower Water Consumption
    • Chilled water pump power is rejected to atmosphere by the cooling tower
    • Compressor power is rejected to atmosphere by the cooling tower
    • Condenser water pump power is rejected to atmosphere by the cooling tower
  • 19. Chilled Water System 10,000 cooling tons
  • 20. Cooling Tower Water Savings 10000 ton Chilled Water System
    • Colder Chilled Water 747,100 gallons
    • Warmer Tower Water 427,350
    • Series Chillers 1,750,900
    • EarthWise Total 2,925,350 gallons
    11,090 cubic meters annually
  • 21.  
  • 22.  
  • 23.  
  • 24.  
  • 25. EarthWise Chilled Water Systems
    • Colder chilled water saves energy
      • Chilled water pumps
    • Warmer cooling tower water saves energy
      • Condenser water pumps
      • Cooling tower fans
    • Series chillers save energy
      • Compressors
    • EarthWise saves water
      • Chilled water and condenser water pumps
      • Series chillers