Closed Cooling Tower, Dry-Wet Mode & Application for High Standard Refrigeration Project

Closed Cooling Tower, Dry-Wet Mode & Application for High Standard Refrigeration Project

Closed cooling tower, also called closed circuit cooling tower: refrigerant water circulates inside coil, not directly contact with air. Spray water wets outer coil surface for evaporative cooling; circulating cooling water of condenser is isolated inside coil. Two working modes: wet mode (spray on) for high heat load; dry mode (spray off) for low ambient, no water evaporation. Core advantage: cooling water circuit is closed, no dust and algae pollution, greatly reduce scaling risk of condenser tube. Xiteliduo closed cooling tower is preferred for food factory, pharmaceutical cold storage and projects with strict water requirement. Closed tower cost is higher than open tower; coil outer surface will also scale gradually on spray side and needs cleaning. Dry mode running can save water and reduce water treatment workload in spring, autumn and winter. Anti-freeze design for closed tower: water basin heating, automatic drain valve or add antifreeze for spray water loop. Closed tower occupies smaller auxiliary water treatment equipment, suitable for areas with poor water quality. Refrigeration maintenance & repair company distinguishes coil side fouling and spray side fouling by temperature log.

FAQ

1. What is the key feature of closed cooling tower? Process water is sealed inside coil, no direct contact with air.
2. What are its two working modes? Wet mode and dry mode.
3. What is the biggest advantage compare with open tower? Water circuit clean, less scaling of condenser.
4. Which project prefers closed cooling tower? Food and pharmaceutical cold storage.
5. What is the disadvantage of closed cooling tower? Higher procurement cost.
6. What is the cooling medium outside coil in wet mode? Spray water film evaporation.
7. Can closed tower run without spray water? Yes, dry cooling mode.
8. Where does scaling easily occur on closed tower? Outer surface of heat exchange coil.