HPAC Magazine

Johnson Controls expands water-cooled chiller portfolio

June 10, 2021 | By HPAC Magazine

The Quantech QWC4 water-cooled screw chiller uses variable speed drive technology.

Johnson Controls introduces the Quantech QWC4 water-cooled screw chiller to its chiller portfolio.

The Quantech QWC4 chiller uses variable speed drive technology saving energy during operating hours spent at off-design conditions, which include reduced load and/or reduced entering condenser water temperature.

Since the QWC4 screw chiller is capable of handling a higher-pressure lift than a centrifugal chiller, it can be used in both thermal-storage and heat-pump applications.

The variable speed drive technology provides the chiller flexibility in handling high-lift applications and allows the chiller to use a wide range of heat-rejection methods, including an open cooling tower, dry cooler, adiabatic cooler, heat recovery or heat pump.

The chiller also directly manages refrigerant charges and potential leak points. The chiller utilizes the R-134a refrigerant, which has zero ozone-depletion potential, and features a design that reduces the number of potential leak points by 35% when compared to conventional compressor designs. It also incorporates a falling-film evaporator that allows for refrigerant charge to be lowered by as much as 30% compared to standard chillers.

The Quantech QWC4 also supports OpenBlue Healthy Buildings  – Johnson Controls’ complete suite of connected solutions.




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