A Quick Guide to Choosing the Right Chiller

Heat is a common byproduct of today's manufacturing machines, which include advanced automation technologies required for high-speed operation and high precision. Components such as spindle motors, variable frequency drives, lasers and x-ray sources all require cooling to operate properly and reliably - most often in very adverse manufacturing environments.

As manufacturing space is at a premium and machine packages become smaller, liquid cooling has become the most efficient and cost-effective way to remove process heat. Particularly suited to hot, dirty environments, liquid cooling provides a way to remove heat from the machine without returning additional heat to the environment.

Water Cooled Screw Chillers

A quick guide to choosing the right chiller

Because every industrial environment is different, the chiller supplier has designed a 6-step guide to help you select the right chiller for your application.

Step 1: Determine the thermal load.

It is important to determine the thermal load of your application to ensure that the chiller selected is large enough for the intended application.

There are several ways to determine the heat load (in kW), but understanding the process is critical to calculating an accurate heat load.

Step 2: Determine the coolant type, temperature and flow rate.

When the heat load is known, the next step is to determine the coolant, its target temperature, and the flow rate that the cooler must provide to the process. This depends on the method by which heat is transferred from the process to the coolant and the type of coolant used. For example, water and oil have different characteristics.

Step 3: Determine the installation environment.

What environment will the chiller be installed in? For example, indoor applications may encounter hot and dirty environments, while outdoor installations may encounter low ambient temperatures and high ambient temperatures. This can affect the size of the chiller and require accessories such as air filters, catch basin heaters, etc.

Step 4: Use chiller performance curves.

Now, using the available chiller performance curves, select a chiller model that meets or exceeds the required capacity based on the chilled water supply temperature and the maximum expected ambient air temperature. Safety margins for applications related to available frame sizes should be considered to maximize the value of chiller selection. Find all Brannenberg chiller performance curves on the relevant product pages.

Step 5: Check the pump performance curve.

Ask us about pump performance curves and check them to ensure that the pump is providing sufficient pressure at the design flow to meet the application requirements. Some liquid cooling systems have smaller coolant flow paths or longer distances, and these systems may have higher than average pressure losses.

Step 6: Final selection.

Finally, consider the remaining application requirements, such as power characteristics, control options, footprint, list of mechanisms, colors, etc., and whether the standard Brannenberg chiller selected meets these requirements. Choosing a standard chiller will give you greater reliability, easier service, and universal spare parts and global support.

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