Chilled water systems provide efficient heating and cooling for buildings, hotels, software parks, and industrial processes such as cooling gas engines, compressors, and air washers.
Closed Loop / Chilled Water systems are mostly used for
- Comfort Cooling
- Process closed water loops
- Hot water in process applications
- Condenser cooling
In closed loop systems, minimal makeup water is used, which can lead to potential issues with corrosion and microfouling.
Corrosion in closed loop systems can manifest as pitting, galvanic, or crevice attacks. To effectively control these issues, inhibitors such as nitrates and molybdates are commonly used.
Microbiological fouling, caused by iron-reducing bacteria, nitrifying bacteria, and slime-forming Pseudomonas, can decrease system efficiency and drive up operating and maintenance costs.
United Chemical has extensive experience in protecting and treating closed loop systems.
For HVAC applications, initial flushing, cleaning, and passivation of chilled water circuits are crucial for ensuring the long-term health of the system. Since most large chilled water HVAC systems cannot be stopped once operational, thorough initial treatment is essential. Proper flushing and passivation help protect the system and ensure trouble-free service for an extended period.
United Chemical offers the following solutions for closed loop systems.
- Initial flushing and passivation.
- Regular treatment of Chilled Water circuits for HVAC application.
- On Line cleaning of HVAC close loop system.
- Hot water circuit treatment.
