US Patent 10375978 Controlled blast cell cooling

A blast cell system is disclosed that includes a plurality of bays that are spaced across the blast cell, arranged to hold items to be cooled, wherein each bay is separated from each other bay so as to prevent cross-flow of air from one bay to another bay; a plurality of louvers, each covering a different bay of the plurality of bays; one or more flow sensors, temperature sensors, or both positioned to sense conditions for each of the plurality of bays; and a controller programmed to modulate open-closed positions of each of the plurality of louvers separately from others of the plurality of louvers, so as to allow different volumes of cooling air to flow through each respective bay.