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OPEN-LOOP EVAPORATIVE COOLING FOR WINTER CHILLER PLANT OPTIMIZATION.

Author(s) : TRACEY J. S.

Summary

IN COLDER WEATHER, COOLING TOWERS CAN REPLACE CENTRIFUGAL CHILLER MACHINES. WHEN WET-BULB TEMPERATURES GO BELOW 277.5 K (4.5 DEG C), THE CHILLED AND CONDENSER WATER CIRCUITS ARE COMBINED. THE COOLING TOWERS ARE USED AS A REFRIGERATING MACHINE, THEREBY SAVING THE ELECTRICAL POWER NEEDED TO RUN A CHILLER DURING COOLER WEATHER. EXISTING BUILDING CONDITIONS PROVIDE FOR A CONSTANT OFFSEASON LOAD OF 1,800 KILOW, WITH A MAINTAINED CHILLED WATER TEMPERATURE OF APPROXIMATELY 279 K (6 DEG C). TEMPERATURES ARE HELD CONSTANT BY VARYING THE TOWER FAN SPEED AND THE CHILLED WATER FLOW RATES. THIS TRANSLATES TO AN ANNUAL OPERATING SAVING OF $ 87,500 AND A PROJECT PAYBACK OF LESS THAN TWO YEARS.

Details

  • Original title: OPEN-LOOP EVAPORATIVE COOLING FOR WINTER CHILLER PLANT OPTIMIZATION.
  • Record ID : 1986-0142
  • Languages: English
  • Publication date: 1984
  • Source: Source: ASHRAE Trans.
    vol. 90; n. 2B; 389-397; 2 fig.; 1 tabl.; 5 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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