Closed loop water systems have very minimal water losses. Some define a system with 5% volume loss or less per month as a true closed loop. Closed loops can be used for heating and cooling.
The main advantage of a closed loop is the use of high quality water without concentrating dissolved and suspended solids. The closed loop does not lose water to evaporation and does not scrub dirt out of the air, so scaling or sludging should not be a problem.
Closed loops offer their own challenges.
- Corrosion
- Microbiological activity
- Often ignored, untreated, and neglected
- Chemistry
