Chillers and Heat Pumps | Water-Cooled Chillers and Heat Pumps
Magnetic Driveline Superiority
The YZ variable-speed drive and advanced magnetic bearing lubrication free design deliver extraordinary efficiency , superior durability , simplified maintenance and a wider operating envelope than any chiller using oil- or refrigerantlubricated compressor bearings .
Ultimate Performance Efficiency
Thanks to magnetic bearing and lubrication free design YZ can run stably in the whole envelope shown in figure .
It provides highest energy efficiency when running at any low head condition , especially below 16 ° C water temperature inlet in the condenser ( ECWT ) where most of conventional chillers cannot operate .
YZ can take benefit of minimum lift applications , with COP as high as 38 .
In the extra-low ECWT area on the map , running at low lift conditions ( e . g . Data center ) can occur at higher leaving evaporator temperatures , similar efficiencies can be achieved .
Note : The operating map can vary , please contact your JCI Representative for project specific details .
115 ° F ( 46 ° C )
Entering Condenser Water Temperature
Higher ECWT Stable
Operation
Lower ECWT Real-world Operation
Extra-low ECWT Out-of-thisworld Operation
105 ° F ( 40 ° C )
95 ° F ( 35 ° C )
85 ° F ( 29 ° C )
75 ° F ( 24 ° C )
65 ° F ( 18 ° C )
55 ° F ( 13 ° C )
45 ° F ( 7 ° C )
10 20 30 40 50 60 70 80 90 100 110 Percent Load
Design Point |
Typical Competitor Operation |
Stable Operation |
Design Efficiency |
> 25 % Efficiency Improvement |
> 50 % Efficiency Improvement |
76 YORK Air-Conditioning Products