Why air cooled chiller is used in combination with water cooled chiller?

Air cooled chillers and water cooled chillers are two common types of cooling systems used in industrial and commercial settings. While each type has its own advantages and disadvantages, it is not uncommon for these two systems to be used in combination. In this article, we will explore the reasons why air cooled chiller is used in combination with water cooled chiller.

Firstly, one of the main reasons why air cooled chiller is used in combination with water cooled chiller is for energy efficiency. During the cooler months, when the outdoor temperature is low, the air cooled chiller can provide sufficient cooling capacity without requiring the use of a water cooled chiller. However, during the hotter months, when the outdoor temperature is high, the air cooled chiller may not be able to provide adequate cooling capacity alone. In this case, the water cooled chiller can be used in conjunction with the air cooled chiller to provide additional cooling capacity, thus reducing the overall energy consumption of the system.

Secondly, the combination of air cooled chiller and water cooled chiller can provide greater reliability and redundancy. In the event of a breakdown or maintenance issue with one of the chillers, the other chiller can continue to provide cooling capacity, thus ensuring that the system remains operational. This redundancy is especially important in critical applications where downtime can result in significant financial losses or safety hazards.

Another reason why air cooled chiller is used in combination with water cooled chiller is for flexibility. Depending on the specific cooling requirements of the application, it may be more efficient to use one type of chiller over the other. By having both types of chillers in the system, the operator can choose which chiller to use based on the current cooling load and operating conditions.

Lastly, the combination of air cooled chiller and water cooled chiller can provide greater cost savings. In some cases, it may be more cost-effective to install a smaller air cooled chiller and supplement it with a water cooled chiller during peak demand periods, rather than installing a larger air cooled chiller that can handle the maximum cooling load.

In conclusion, the combination of air cooled chiller and water cooled chiller provides many benefits, including energy efficiency, reliability and redundancy, flexibility, and cost savings. By understanding the advantages of each type of chiller and utilizing them in a complementary manner, operators can maximize the efficiency and effectiveness of their cooling systems.