overhead interior lining of a room. See false ceiling; sus­pended ceiling 

smallest tower sub­division which can function as an independent heat exchange unit. It is bound­ed by exterior walls or partitions. Each cell may have one or more fans or stacks and one or more dis­tribution systems 

cooling efficiency ratio 

cubic feet per minute 

cubic feet per second 

1. change from one set of controls to another.

1. output of a load-management system; usually corre­sponding to a specific relay.

2. (computer) path along which signals can be sent, e.g., data channel, output channel.

3. portion of a storage medium that is accessible to a given reading station, e.g., track, band.

verb. to supply cooling or heating to storage