Chiller Performance

Constant- vs. Variable-Speed Chiller Performance

at 65 F entering condenser water temperature

Chiller Performance GraphTwo major factors affect chiller energy efficiency: load and entering condenser water temperature. While reducing either will save energy, the savings are even greater when using a variable-speed chiller.

Thanks to our recent expansion and plant upgrade, TECO's new chillers have variable-speed drives and are more efficient than TECO's comparable constant-speed chillers. At a 65 F entering condenser water temperature, the variable-speed chillers are, on average 23%, more efficient throughout their operating load range. Partial load operation of the variable-speed chillers also conserves and saves money.

Facts and Figures

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