In addition to recurring operating costs, it is possible to save on initial installation costs.
Keeping the process fluid in a closed system allows users to prioritize which components need upgraded materials of construction. This means you may need a stainless steel open cooling tower for a given application, but when using a closed-loop system, it may be possible to use a traditional galvanized closed-circuit cooling tower. In addition to simplifying the materials, it may be possible to reduce the total number of components needed. For example, because the process side is kept isolated, the heat-exchange loop may be eliminated. This saves money on the equipment such as the heat exchanger and pump, and the installation labor for installing and balancing the system.
Beyond the more traditional methods of cost savings, there are creative solutions for using a closed-circuit cooling tower to save on both initial and annual costs of the system. These tend to be found on a case-by-case basis, but everything from the specific process to the local environment can present opportunities for savings. Facilities with rigorous maintenance schedules can explore cleanable coils, removable headers or other service-friendly options that can help reduce labor. Buildings located in cooler climates might be able to take advantage of dry winter operation. Areas with elevated water costs can optimize energy and water usage by utilizing a hybrid closed-circuit cooling tower offering optional wet, dry or adiabatic operation.
Related: Closing the Cooling Tower Loop