Heat Rejection
Adiabatic Cooler
An Adiabatic Cooler is a dry cooler enhanced with evaporative pre-cooling that wets or humidifies the incoming air…
Heat Rejection
Air-Cooled Chiller
An Air-Cooled Chiller is a chiller that rejects heat directly to the atmosphere through integral condenser coils and…
Heat Rejection
Approach Temperature
Approach Temperature is the difference between the temperature of a fluid leaving a heat-rejection or heat-exchange device and…
Heat Rejection
Chilled Water Loop
A Chilled Water Loop is the closed piping circuit that distributes chilled water from chillers to cooling coils…
Heat Rejection
Chiller
A Chiller is a refrigeration machine that produces chilled water to remove heat from a data center's cooling…
Heat Rejection
Closed-Circuit Cooling Tower
A Closed-Circuit Cooling Tower rejects heat by circulating the process fluid through a closed coil that is externally…
Heat Rejection
Condenser Water Loop
A Condenser Water Loop is the piping circuit that carries heat from water-cooled chiller condensers to a cooling…
Heat Rejection
Cooling Tower
A Cooling Tower is a heat-rejection device that cools condenser water by evaporating a portion of it as…
Heat Rejection
Cooling Tower Range
Cooling Tower Range is the temperature drop of the water across a cooling tower, equal to the difference…
Heat Rejection
District Heating Export
District Heating Export is the delivery of recovered waste heat from a data center into a district heating…
Heat Rejection
Drift Eliminator
A Drift Eliminator is a baffle assembly inside a cooling tower that captures entrained water droplets from the…
Heat Rejection
Dry Cooler
A Dry Cooler is a heat-rejection unit that cools a fluid by passing ambient air over finned coils…
Heat Rejection
Economizer
An Economizer is a cooling arrangement that uses favorable outdoor conditions to cool the data center with reduced…
Heat Rejection
Free Cooling
Free Cooling is any mode that rejects data center heat using cool ambient air or water with little…
Heat Rejection
Free Cooling Hours
Free Cooling Hours are the number of hours per year that a site's climate allows a data center…
Heat Rejection
Heat Exchanger
A Heat Exchanger is a device that transfers thermal energy between two fluid streams without mixing them, commonly…
Heat Rejection
Heat Reuse
Heat Reuse is the capture of waste heat from data center equipment for a beneficial secondary use rather…
Heat Rejection
Hybrid Cooler
A Hybrid Cooler combines dry, sensible heat rejection with an evaporative or adiabatic assist that engages only when…
Heat Rejection
Pump Skid
A Pump Skid is a pre-assembled, frame-mounted package of pumps, valves, piping, sensors and controls that circulates water…
Heat Rejection
Pumped Refrigerant Economizer
A Pumped Refrigerant Economizer provides free cooling by circulating liquid refrigerant with a pump instead of the compressor…
Heat Rejection
Refrigerant Condenser
A Refrigerant Condenser is the heat exchanger in a refrigeration circuit where high-pressure refrigerant vapor gives up heat…
Heat Rejection
Sensible Cooling
Sensible Cooling is the removal of heat that lowers air temperature without changing its moisture content, as opposed…
Heat Rejection
Variable Speed Drive
A Variable Speed Drive (VSD) is an electronic controller that adjusts the speed of a motor by varying…
Heat Rejection
Water-Cooled Chiller
A Water-Cooled Chiller is a chiller that rejects heat to a condenser-water loop connected to a cooling tower…
Heat Rejection
Water-Side Economizer
A Water-Side Economizer provides free cooling by using a heat exchanger to reject data center heat to the…