Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Couple of other comments to add.
For ASHRAE 90.1 compliance it should be 1 cell per tower and 1 tower per chiller in a separate loop. Ie. don't put 2 separate towers on the same loop serving 2 separate chillers.
In reality towers can only have about 50% water flow in order to get proper distribution of cooling tower water over the tower fill. Please keep this in mind for condenser water pumps running on VFDs.
Running maximum cells vs. minimum cells makes a difference in fan power. One 10 Hp fan running uses more energy than two 10 Hp fans running at 50% due to the fan affinity laws.
