Variable-speed screw chiller

The York YVWA water-cooled screw chiller from Johnson Controls uses energy-saving variable-speed technology to help cut energy costs and carbon emissions by as much as 25%. The variable-speed drive saves energy during the 97% of operating hours at off-peak conditions, when building loads and/or water-tower temperatures are lower. As a result, these chillers deliver an integrated part-load valve as much as 30% better than traditional screw chillers.

The refrigerant is R134a, and the design of these chillers reduces the number of potential leak points by 35%. The falling-film evaporator reduces the number of potential leak points by as much as 30%.

These chillers can use a wide range of heat-rejection methods — including open cooling tower, dry cooler, adiabatic cooler, heat recovery or heat pump.

For more information on this story, click here: May 2012, 164
Related links:
Related articles:



modbs tv logo

Glenigan data shows construction volume output reaches pre-pandemic levels

Construction volume output rises 3.5%, reversing October’s 1.7% decline. 

Baxi releases new commercial guide to hydrogen for heat

Baxi Commercial Solutions has released a new educational guide for the non-domestic sector that aims to debunk the myths surrounding hydrogen for heat and provide a timeframe for the anticipated transition to this greener gas.