Custom build · Closed loop · custom
Closed Circuit Cooling Tower
Process fluid stays in the coil — the tower cools it without ever touching the atmosphere.
A closed-circuit tower sprays water over a coil bank while a fan pulls air through. The process fluid never leaves the tube, so it stays clean, keeps its chemistry and cannot pick up airborne dust. That makes the type the default choice for precision cooling, food, pharmaceutical and any duty where the fluid itself must stay uncontaminated. Capacity and materials are custom: coil surface, tube material, casing and basin are sized to the duty the project declares.
Specification
| Tower type | Closed circuit (closed loop), induced draft |
|---|---|
| Process side | Fluid stays inside the coil — no contact with air or spray water |
| Coil | Custom surface area and tube material to the duty point |
| Air side | Axial fan with FRP or steel casing, louvered intake |
| Basin | Spray water basin with make-up, overflow and drain |
| Capacity | Custom — sized from Q, inlet/outlet temperature and wet bulb |
| Materials | FRP casing with stainless coil standard; other materials on request |
| Service | Coil and spray headers accessible from the side |
Design notes
- Fluid stays cleanA closed loop keeps the process water free of dust, algae and airborne contamination — no side-stream filtration to police.
- Water chemistry heldBecause the fluid is not evaporating in the tower, its concentration stays where the process needs it.
- Suits hygiene dutyFood, pharmaceutical and precision cooling duties specify closed circuit for the same reason: nothing gets in.
- Custom by definitionCoil, casing and basin are built to the declared duty rather than picked from a fixed table.
Options
- Stainless or coated coil for aggressive fluids
- Dry cooler mode for winter operation
- VFD fan and spray-pump control
- Basin heater and anti-icing control
Applications
- Precision cooling and machine tools
- Food and beverage processing
- Pharmaceutical and clean utilities
- Closed-loop process water where contamination is unacceptable
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