Centrifugal chiller – why to choose it

A centrifugal chiller is always among the options to consider when it comes to choosing the best option for a business bottom line. It might be a HVAC project aims at providing cooling for a large building, for district energy plants or process plants. Centrifugal technology often relevant.

When to use a centrifugal technology

Centrifugal chillers are typically provide chilled water for all those applications needing cooling capacity on high scale. They are usually the most economical option to cool large buildings, because, even though centrifugal chillers can be a significant investment, they usually offer a customizable configuration and they guarantee the ROI throughout their life cycle.

It is a technology for indoor installation, or for weather protected areas. It is widely used in North America, since the building stock in that region is made of large buildings for a good portion. Centrifugal chillers, though, are also relevant in the European and Middle East. In these markets, they are largely used for

Among the EMEA markets Middle East is probably the most important for district cooling applications, while the others deal more with the other applications previously mentioned.

Centrifugal chillers have been dominating the HVAC market for cooling capacities above 1000 kW. Larger centrifugal units, then, can even provide several thousand kW. While, below the 1000 kW cooling capacity, centrifugal chillers are not that used.

Why to use a centrifugal chiller

Every project has its own specific requirements and needs. There are aspects, though, that might make consultants want to choose centrifugal chillers over other chillers types.

The most important aspects, without a doubt, are efficiency and footprint.

Whenever projects are required to provide cooling for large buildings, water-cooled centrifugal technology is the right solution. Centrifugal chillers are always an option to consider, because they can provide the cooling capacity required in a relatively small footprint, also maintaining very high efficiency levels.

Centrifugal chillers, in fact, can provide high capacity while maintaining very good energy-efficiency performances (Daikin centrifugal chillers fitted with VFD can provide COP > 6 full load and IPLV > 10), especially at full load, resulting in low running costs for the end user.

An example of centrifugal technology application

Let’s take a mall as an example. A centrifugal chillers might help reaching the cooling capacity the building needs with a smaller number of units than than other chiller options, which would take more space. So, the main advantage of using a centrifugal chiller would getting high cooling capacity in a relatively small footprint, plus high operational efficiency.

Think about cruise ships requiring high cooling capacity to serve all the different environments on board. In this specific application chillers are often have fit tight mechanical rooms. In fact, business owners need to take as little space as possible for HVAC systems and use it to shape a better experience for customers. That is another example of when and how centrifugal technology can be a perfect solution to space needs.

The same happens in district cooling applications. In this application, having the possibility to install high capacity centrifugal chillers in a single mechanical plant, allows to optimize the use of space, and then use it for other activities.

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