NWH
NWH Series Cross Flow Closed Type Cooling Tower
Normal Model: NWH-120-Z7-S
Cooling Tower Type: Cross Flow Closed Type
Air Ventilation: Induced Draft (Aerofoil aluminum alloy axial fan)
Cooling Mode: Wet Cooling Mode
Heat Exchanger: Stainless Steel Heat Exchange Coil
Cooling Tower Body: Z700 Galvanized Steel （SUS304/316 or NWN-Armour anti-corrosion coating steel plate for option）
NWH Series Cross Flow Closed Type Cooling Tower
NWH series closed cooling tower features full-sides horizontal air intake (dual/single side) with uniform gravity-fed water distribution, representing a high-efficiency cross-flow closed-circuit cooling tower. Its modular design allows multiple-unit configuration for flexible capacity requirements. Its robust construction includes:
· Corrosion-resistant heat exchange coils
· Side air inlet grille
· Gravity-type uniform water distribution system
· High-performance axial fans
· PVC fill media for efficient heat transfer
· Integrated water collection basin
*Applicable medium: water, oil, formaldehyde, quenching liquid, and other process circulating cooling media.
*Application: Widely applied in HVAC systems, machining, and food processing industries where demanding heat dissipation stability and frequent maintenance access are required.
ADVANTAGE
Energy-efficient cross-flow closed circuit cooling system
Features horizontal short-path airflow design with low air resistance and energy consumption, ideal for high-flow, low-pressure applications with excellent heat transfer efficiency. The closed-circuit system effectively reduces evaporation loss and maintenance costs.
Optimized Water Distribution Technology
The tower-top gravity type water distribution system ensures even spray coverage on coil surfaces, preventing dry zones and significantly reducing scaling risks to extend equipment service life.
Stable Operation Assurance
Specially designed buffer structure accommodates medium flow fluctuations, maintaining stable heat dissipation performance even under unstable operating conditions for reliable continuous operation.
Easy Maintenance Features
Sides air intake and modular design allow independent maintenance of core components (coils, spray system), significantly improving maintenance efficiency and reducing downtime.
MAIN PARTS
Fan Drive System
Aerofoil aluminum alloy axial fan with dynamic balance calibration for quiet efficiency. Motor rating: IP55 protection, Class F insulation. Options: Dual-speed/VFD/Explosion-proof motors.
Integrated Baffle-Type Infill
Self-extinguishing PVC material, combined fill and drift eliminator in one integral design. Enhances heat exchange efficiency while reducing drift loss to below 0.005%.
Stainless Steel Heat Exchange Coil
The high-quality heat exchange coil utilizes a stainless steel serpentine bending tube and a sturdy framework, ensuring superior thermal performance and full contact with spray water for efficient heat exchange and effective cooling. The stainless steel heat exchange pipes are not only resistant to corrosion, but also lightweight and recyclable.
Drift Eliminator
PVC honeycomb structure，drift loss less than 0.001%; quick-release design simplifies maintenance.
Water Distribution System
Anti-clogging nozzles precision positioning ensure full coverage of coil surface, enhancing heat transfer efficiency and water utilization.
Air Inlet Grille
45° 3D-angled design, reduces noise and algae growth; snap-fit installation enables single-person quick removal for easy maintenance.
| Model | Air Inlet Sides | Dimension (mm) | Weight （kg） | |||
| L | W | H | dry | wet | ||
| NWH-120-Z7-S | Single | 2300 | 1910 | 2950 | 1400 | 2660 |
| NWH-180-Z7-S | Single | 2300 | 1910 | 3030 | 1240 | 2540 |
| NWH-230-Z7-S | Single | 2850 | 2110 | 3100 | 1470 | 3260 |
| NWH-290-Z7-S | Single | 3550 | 2110 | 3100 | 1720 | 4030 |
| NWH-350-Z7-S | Single | 4150 | 2110 | 3100 | 1960 | 4710 |
| NWH-450-Z7-S | Single | 4550 | 2250 | 3650 | 2320 | 4670 |
| NWH-600-Z7-S | Single | 4550 | 2250 | 3910 | 2420 | 4830 |
| NWH-750-Z7-S | Single | 5200 | 2250 | 4440 | 2910 | 5740 |
| NWH-900-Z7-S | Single | 5200 | 2250 | 4660 | 3070 | 6050 |
| NWH-1000-Z7-S | Single | 5200 | 2870 | 4660 | 3440 | 7130 |
| NWH-1150-Z7-S | Single | 5900 | 2870 | 4710 | 3780 | 7950 |
| NWH-1450-Z7-S | Single | 5900 | 3150 | 4840 | 4020 | 9610 |
| NWH-1750-Z7-S | Single | 6500 | 3150 | 4840 | 4400 | 10670 |
| NWH-700-Z7-S | Dual | 4150 | 3550 | 3250 | 2800 | 5630 |
| NWH-900-Z7-S | Dual | 4550 | 4060 | 3800 | 3520 | 8160 |
| NWH-1200-Z7-S | Dual | 4550 | 4060 | 4060 | 3920 | 8680 |
| NWH-1500-Z7-S | Dual | 5200 | 4260 | 4640 | 4460 | 10280 |
| NWH-1800-Z7-S | Dual | 5200 | 4260 | 4870 | 4640 | 10760 |
| NWH-2000-Z7-S | Dual | 5200 | 4970 | 4870 | 5040 | 12110 |
| NWH-2300-Z7-S | Dual | 5900 | 5270 | 4920 | 5650 | 14050 |
| NWH-2900-Z7-S | Dual | 5900 | 5870 | 5050 | 6130 | 17520 |
| NWH-3500-Z7-S | Dual | 6500 | 5870 | 5050 | 6390 | 19090 |
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