cooling plant noun2 •A facility for the purpose of cooling something.The cooling plant consists of two barges completely equipped with electrically operated centrifugal pumping units, priming pumping units, control boards, piping, and deck houses. — 1937 •A facility for producing a medium (such as ice) that is used for cooling.SEER is the ratio of the total amount of cooling energy provided, divided by the total energy input to the cooling plant ( which may comprise more than one cooling unit) , summed over the year. — 2006 formscooling plants