Water side economizer

Water side economizer

A water side economizer reduces energy consumption in cooling mode by allowing the chiller to be turned off when the cooling tower alone can produce water at the desired chilled water set point. The cooling tower system, rather than the chiller, provides the cold water for cooling.
References in periodicals archive ?
They also deployed a water-cooled chiller system with water side economizer functions.
Not only would this lower the annual chiller kW/Ton but it would also increase the portion of the load that could be efficiently handled by the water side economizer.
Those will include a water side economizer that uses outside air to cool water versus motorized chillers and variable speed drives to run fans and chillers on an on-demand basis.
Hence, chilled water and cooling tower pumps that are sized for the chiller operation are acceptable to full water side economizer operation.
Cold climate zones "low CCD" causes the mechanical cooling systems to operate more efficiently and offer potential for "free cooling" directly via an air economizer or indirectly via a water side economizer. Hence, substantial reduction in mechanical power consumption and improved PUE.