freecooling

freecooling

(ˈfriːˌkuːlɪŋ)
n
a system that uses low ambient air temperature to chill water, esp for use in air conditioning
References in periodicals archive ?
These include direct expansion systems that are able to operate at high return-air temperatures, suitable for the increased temperatures within which IT equipment works; chilled water systems that maximize freecooling operation all year round and include a chilled water floor mount range and freecooling chillers; as well as an adiabatic freecooling chiller (Liebert AFC), which combines 3 cooling technologies (adiabatic cooling, freecooling, and mechanical cooling) in a single unit and is capable of achieving a partial power usage effectiveness (pPUE) of 1.08.
New branch of Italian firm supplies Microgel water-cooled portable chillers with built-in heating capability (6 to 48 kw) for a temperature range of 20 to 195 E Automatic "freecooling" when neither heating or chilling is required to modify incoming process-water temperature.
Aside from thermal storage, another method using inexpensively chilled water is freecooling. In freecooling, says Siebert "the cooling tower water temperature is lowered and that cold water is circulated through the chiller." This accomplishes a non-energy (no energy used) heat transfer within the vessel of the chiller which results in obtaining approximately 60 percent of the cooling capacity of the chiller without running the compressor.