NWN-GS
Dry-Wet Hybrid Induced Draft Closed Cooling Tower
Normal Model: NWN-GS
Cooling Tower Type: Counter Flow Closed Type
Air Ventilation: Induced Draft ( Axial Fan Drive System)
Cooling Mode: Dry-Wet Hybrid Cooling
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）
NWN-GS Series Dry-Wet Hybrid Induced Draft Closed Cooling Tower
The cooling system of NWN-GS series integrates the attributes of wet and dry cooling, delivering optimal cooling performance, minimal energy consumption, and water conservation across varying ambient temperatures. It is particularly well-suited for arid desert regions and harsh cold climates. Additionally, its forced draft system allows the low-noise operation and represents the optimal cooling solution for inadequately ventilated and noise-sensitive locations.
ADVANTAGE
Dry-Wet Hybrid Cooling Mode
NWN-GS cooling tower has the capability to adapt its operational modes in response to fluctuations in ambient temperature.
Dry Cooling Mode
When the temperature falls below -10℃ or the output temperature is lower than the set point, the spray pump will cease operation and the cooling tower will switch to dry cooling mode. This minimizes water evaporation during cold seasons and provides ice water in certain working conditions as an alternative to refrigeration, resulting in water and energy savings.
Wet Cooling Mode
When the temperature exceeds a specific threshold (-2℃), or when the output temperature surpasses a predetermined level, the spray pump initiates operation, causing the cooling tower to function in wet cooling mode. Evaporative cooling guarantees substantial cooling capacity.
Minimized Water Contamination, High Thermal Efficiency, Reduced Operational Expenditure.
The counter-flow closed-loop cooling system maintains optimal heat transfer efficiency while ensuring pure media protection, substantially reducing both environmental contamination potential and operational water treatment costs.
Wide application range with exceptional scenario compatibility.
This system is ideally suited for industries with stringent cooling water quality requirements (e.g., electronics, pharmaceuticals), precise temperature control needs (e.g., chemical process cooling), or restricted water discharge capabilities—effectively mitigating the contamination risks associated with open-loop cooling. It maintains high heat dissipation efficiency even in hot/humid climates while significantly reducing water consumption and freeze damage in cold/arid regions. Particularly well-adapted to diverse climate zones like Northern China, it delivers reliable performance across extreme environmental conditions.
MAIN PARTS
High Efficient Axial Flow Fan
> Utilization of the cooling tower special aluminum alloy axial flow fan, forward type blade structure design, small wind resistance, big air volume, low noise, good performance, high efficiency.
> Streamline high-strength fan stack ensures airflow uniform through the fan inlet and outlet area, maximum reduce the energy consumption.
> Fan motor's protection class: IP55, Insulation class: F class. Options: Two-speed, VFD or anti-explosion motor.
Finned Tube Heat Exchanger
Fin tube heat exchanger is constructed with stainless steel tubes and aluminum spiral fins, boasting robust anti-corrosion properties and enhanced stability. The structural design of the fin tube is intended to enhance the heat exchange area, optimize efficiency in heat transfer, facilitate complete air exchange with the fin tube, and ultimately achieve water-saving operation of equipment during both dry cooling and wet cooling stages. It can also effectively eliminate the occurrence of "white smoke" during winter operation of the cooling tower, thus ensuring a favorable working environment for the equipment and prolonging its service life.
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.
PLC Electrical Control System
Automated operation is achieved through intelligent control systems, further reducing operation and maintenance costs.
Cellular Type Easy-to-detach PVC Drift Eliminator
Efficiently extracting airborne water droplets, small wind resistance and an impressive capture rate of 99.99%, thus guaranteeing optimal heat transfer performance.
Uniform Water Distribution
The strategically positioned Three-splashed-Nozzles, evenly water distribution under low pressure flow; Large caliber and three splashed type design, not easy to block, enhance spray coverage and guarantee continuous effective spraying, ensuring the efficient cooling performance of cooling tower.
Heavy-duty Structure
The design features a compact structure, utilizing high-quality galvanized steel plate and stainless steel bolt fastening. Furthermore, it has the option to be upgraded to an all-stainless steel structure or NWN-Armour anti-corrosion structure, providing enhanced resistance against corrosion and extending its service life.
| Model | Wet Cooling | Free Cooling | Fan Motor | Spray Pump | Total Dimension | Weight | |||||
| Fluid Flow | Cooling Capacity | Cooling Capacity | Power | Power | L | W | H | Shipping | Operation | ||
| m³/h | kW | kW | kW | kW | mm | mm | mm | kg | kg | ||
| NWN-GS-60-Z7-S | 10 | 52 | 9.1 | 1.1*1 | 0.75 | 1800 | 900 | 3480 | 760 | 1180 | |
| NWN-GS-90-Z7-S | 15 | 77 | 9.4 | 1.5*1 | 0.75 | 1800 | 900 | 3480 | 810 | 1230 | |
| NWN-GS-120-Z7-S | 20 | 103 | 17.8 | 1.1*2 | 0.75 | 2300 | 1100 | 3320 | 1030 | 1810 | |
| NWN-GS-180-Z7-S | 30 | 155 | 22.8 | 1.5*2 | 1.1 | 2850 | 1100 | 3370 | 1320 | 2260 | |
| NWN-GS-230-Z7-S | 40 | 206 | 31.1 | 2.2*2 | 1.1 | 2850 | 1100 | 3580 | 1420 | 2460 | |
| NWN-GS-290-Z7-S | 50 | 258 | 31.9 | 3*2 | 1.1 | 2850 | 1100 | 3580 | 1520 | 2560 | |
| NWN-GS-350-Z7-S | 60 | 309 | 34.6 | 3*2 | 1.1 | 2850 | 1200 | 3740 | 1690 | 2880 | |
| NWN-GS-450-Z7-S | 80 | 412 | 74.4 | 3*3 | 2.2 | 4600 | 1450 | 3940 | 3290 | 4600 | |
| NWN-GS-600-Z7-S | 100 | 515 | 76.9 | 4*3 | 2.2 | 4600 | 1450 | 3940 | 3490 | 4900 | |
| NWN-GS-750-Z7-S | 125 | 644 | 94.8 | 7.5*2 | 2.2 | 4650 | 1750 | 4410 | 4100 | 6160 | |
| NWN-GS-850-Z7-S | 150 | 773 | 124.4 | 7.5*2 | 3 | 4650 | 2250 | 4540 | 4700 | 7440 | |
| NWN-GS-1000-Z7-S | 175 | 901 | 125.7 | 7.5*2 | 3 | 4650 | 2250 | 4710 | 4900 | 7740 | |
| NWN-GS-1150-Z7-S | 200 | 1030 | 171.9 | 11*2 | 5.5 | 6200 | 2250 | 4820 | 6030 | 10210 | |
| NWN-GS-1300-Z7-S | 225 | 1159 | 175.2 | 11*2 | 5.5 | 6200 | 2250 | 4820 | 6230 | 10510 | |
| NWN-GS-1450-Z7-S | 250 | 1288 | 197.2 | 15*2 | 5.5 | 6250 | 2500 | 5080 | 6780 | 11620 | |
| NWN-GS-1750-Z7-S | 300 | 1545 | 239.7 | 15*2 | 7.5 | 6250 | 3000 | 5180 | 7740 | 13510 | |
Note: 1. Standard Design Working Condition: Fluid in/out temperature: 35/30℃. 2. Standard design ambient wet/dry bulb temperature: 21/31℃. 3. Above data sheet based on 40% ethylene glycol solution fluid. 4. Please contact NEWIN sales representative if working condition not same as above standard design condition. |
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