18-15: Closing The Loop – Which Method is Best for Your SystemClosed loop cooling systems deliver many benefits compared to traditional open loop systems, such as reduced fouling, less risk of fluid contamination, lower maintenance, and increased system reliability and uptime. Several methods are used to close the cooling loop, including the use of an open circuit cooling tower coupled with a plate & frame heat exchanger or the use of a closed circuit cooling tower. This study examines the total installed cost