Closed Water Cooling Tower
Closed water cooling tower is a high-efficiency closed-loop cooling equipment, adopting fully enclosed circulating water design.
- Cooling water
- Soft water
- Cooling water quantity
- 10T-80T
- Control mode
- intelligent control

How it works
It is widely matched with induction furnaces, melting furnaces, rolling mills, industrial machinery, chemical equipment and various high-temperature industrial equipment. It is suitable for circulating cooling of industrial circulating water, cooling water for heating equipment and production process water. It is commonly used in metallurgy, foundry, machinery manufacturing, chemical industry and metal smelting industries, to stabilize equipment temperature and ensure continuous and stable operation of industrial machines.
Induction power supplies, coils and cables are water-cooled, and the heat they pick up has to leave the system continuously. A cooling tower does that by rejecting heat to atmosphere: warm water is spread over a fill medium, air moves past it, and evaporation carries the heat away.
The two arrangements differ in what they do to the water. An open tower exposes the circuit to air, so dust and evaporation concentrate the water and it needs regular treatment and makeup. A closed tower keeps the process water in a sealed loop and cools it through a heat exchanger, which protects the furnace circuit from contamination at the cost of a larger footprint.
Key features
- Fully closed circulating structure, effectively prevent water pollution, dust and sundries from entering, and keep circulating water clean
- Excellent heat dissipation and cooling performance, fast heat exchange, stable cooling temperature and high working efficiency
- Equipped with anti-corrosion and wear-resistant shell and internal components, adapting to harsh industrial environment with long service life
- Low noise operation, energy-saving fan and water pump design, reduce power consumption and daily operation cost
- Compact and reasonable overall structure, easy to install, occupy small space and convenient for daily maintenance
- Intelligent operation design, stable running, safe and reliable, suitable for long-time uninterrupted industrial production
How to choose cooling systems
- Size the tower against the heat rejection the power supply demands, not against the furnace tonnage.
- Choose closed loop where the furnace circuit must stay clean or where the site water is hard or dirty; choose open where footprint and cost dominate and water treatment is available.
- Confirm the ambient design condition — a tower sized for a mild climate will run short in a hot season.
- Plan the pump, tank and piping as part of the package; a tower without matched circulation is not a cooling system.
Technical data
| Cooling water | Soft water |
|---|---|
| Cooling water quantity | 10T-80T |
| Control mode | intelligent control |
| Model | m³/h | KCAL./h | Net weight(Kg) | Dimension |
|---|---|---|---|---|
| ZXZ-N10T | 10 | 50000 | 450 | 2200*1050*2500 |
| ZXZ-N15T | 15 | 75000 | 580 | 3200*1030*2600 |
| ZXZ-N20T | 20 | 100000 | 680 | 3200*1030*2600 |
| ZXZ-N30T | 30 | 125000 | 740 | 3400*1140*2600 |
| ZXZ-N40T | 40 | 200000 | 880 | 3400*1140*2600 |
| ZXZ-N50T | 50 | 250000 | 1100 | 3400*1400*2600 |
| ZXZ-N60T | 60 | 300000 | 1250 | 3500*1400*2600 |
| ZXZ-N70T | 70 | 350000 | 1500 | 3500*1720*2600 |
| ZXZ-N80T | 80 | 400000 | 1700 | 3500*1720*2600 |
Specifications are indicative for the model family and are confirmed against your material in the quotation. Wear parts, power supply and control options are listed per project.
Frequently asked questions
Which models of the closed water cooling tower are available?
9 configurations are listed on this page: ZXZ-N10T, ZXZ-N15T, ZXZ-N20T, ZXZ-N30T, ZXZ-N40T, ZXZ-N50T, ZXZ-N60T, ZXZ-N70T, ZXZ-N80T. The right one is set by the throughput you need and the largest piece you will feed.
How do I get a price for the Closed Water Cooling Tower?
There is no list price — every unit is configured to the material first, because the drive, chamber or coil changes with it. Send the material you process, the throughput you need per hour and the destination port, and the quotation is built on those three.
Do I need a closed or an open cooling tower for an induction furnace?
Closed loop where the furnace cooling circuit must stay clean — it keeps process water sealed and rejects heat through a heat exchanger, which suits hard or dirty site water and protects the coil and power supply. Open towers are simpler and smaller but expose the water to air, so they need treatment and regular makeup.
How is a cooling tower sized for an induction furnace?
By the heat the power supply and coil reject, which follows installed power and duty cycle — not by furnace capacity in tonnes. Getting this wrong is the usual cause of a furnace that runs fine in winter and derates in summer.
What happens if the cooling system is undersized?
The power supply protects itself and cuts back output, so melt rate falls exactly when production needs it. Persistent overheating shortens the life of capacitors and cables, which is why cooling is specified together with the furnace rather than added afterwards.
Often specified together

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