Chiller manufacturers must feel like they're on a merry-go-round with no way off. In the last decade they've had to respond quickly to a number of different issues. These have included redesigning their equipment to no longer use chlorofluorocarbons (CFCs); increasing chiller efficiencies; making the change from electromechanical controls to microprocessor controls; and providing for those controls to talk to building automation systems (bas).
It hasn't been easy. Especially the last point. With numerous bas out there, and different protocols at every turn, it's been difficult to make a chiller that will meet everyone's needs. But there have been profound changes lately in the chiller controls world. These changes will make it easier for engineers to specify a chiller for just about any situation, and they will also help improve utility bills.