Centrifugal chillers

The York model YK centrifugal chillers from Johnson Controls used falling-film technology to accomplish refrigerant reduction, improving efficiency.


Johnson ControlsJohnson Controls has announced a refrigerant-charge reduction of up to 40% in its York model YK centrifugal chillers. Falling-film technology is used to accomplish the refrigerant reduction. This technology improves the efficiency of chiller evaporators by spraying refrigerant over the tubes instead of covering the tubes in a refrigerant bath. Because of the efficiency improvement, less refrigerant is needed. When equipped with an OptiSpeed variable-speed drive, the chillers can reduce energy usage to as low as 0.20 kW/TR at off-design conditions.

No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Salary survey: How much are you worth?; Dedicated outdoor air systems; Energy models and lighting
Fire, life safety in schools; Fire protection codes; Detection, suppression, and notification; 2015 Commissioning Giants; Emergency and standby power in hospitals
HVAC and building envelope: Efficient, effective systems; Designing fire sprinkler systems; Wireless controls in buildings; 2015 Product of the Year winners
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
Implementing microgrids: Controlling campus power generation; Understanding cogeneration systems; Evaluating UPS system efficiency; Driving data center PUE, efficiency
Optimizing genset sizing; How the Internet of Things affects the data center; Increasing transformer efficiency; Standby vs. emergency power in mission critical facilities
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.