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Rectangular cooling tower
Common specifications: 50m³/h (DFNL-50) to 1050m³/h (DFNL-1050)6, single unit maximum up to 300m³/h (LXR-300L/SB type) or 1000m³/h or more in groups
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Rectangular cooling tower
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Rectangular cooling tower Details
Flow and Cycle Parameters
Single-cycle water volume (core parameter)
Common specifications: 50m³/h (DFNL-50) to 1050m³/h (DFNL-1050)6, single unit maximum up to 300m³/h (LXR-300L/SB type) or 1000m³/h or more groups
Combination Models
Pipe diameter range: DN150-DN400 (adapts to different flow requirements)
Water pressure requirement: 36kPa (100T type) to 38kPa (300T type)
Temperature and Operating Condition Design
Standard Operating Conditions
Industrial tower: Inlet water temperature 42℃→Outlet water 32℃ (temperature drop 10℃), wet-bulb temperature 28℃
Civil tower: Inlet water 37℃→Outlet water 32℃ (temperature drop 5℃), suitable for low-load scenarios such as air conditioning
Limit operating conditions: Supports inlet water temperature 60℃ (requires special design)
Environmental Matching
Design baseline wet-bulb temperature is generally ≤28℃, needs to be adjusted according to local climate
Structure and Size Parameters
External Dimensions
Small tower (100T): 1980×3200×3700mm (length×width×height)
Large tower (300T): 3250×5450×5000mm, tower height can reach 3600mm
Modular combination: Multiple towers in parallel can be expanded to 1050m³/h (DFNL-1050 type)
Fan and Motor
Fan diameter: 1500mm (100T) to 2700mm (300T) 38
Motor power: 1.5kW (DFNL-50) to 30kW (DFNL-1050)
Blade design: Airfoil hollow fiberglass blades, low-speed operation (energy saving and noise reduction)
Performance and Noise Reduction
Heat Transfer Efficiency
Filler type: Cooling tower dedicated trapezoidal corrugated filler, low ventilation resistance, excellent heat transfer performance
Air-water ratio: Needs to be calculated according to the cooling water volume and environmental parameters (unit: kg air/kg water)
Noise Reduction Technology
Noise control: High-efficiency noise reduction devices are installed at the inlet and outlet, and noise reduction of the same specification can reach 5dB(A)
Operating noise: Low-noise models are suitable for urban environments (such as the LXR series)
Materials and Weight
Tower Body Material
Fiberglass shell: Corrosion-resistant, lightweight, suitable for long-term outdoor operation
Water distribution system: ABS multilayer flow low-pressure nozzle, uniform water distribution, anti-clogging
Weight Parameters
No-load weight: 860kg (100T) to 2450kg (300T)
Operating weight: 2260kg (100T) to 5250kg (300T)
Selection Points
Key Parameter Priority
Circulating water volume>Temperature drop requirement>Ambient wet-bulb temperature>Noise limit
Parallel requirements: Multiple tower combinations need to reserve interfaces (such as the DFNL series supports modular combinations)
Type Selection
Counterflow: High heat transfer efficiency, suitable for industrial high-temperature water cooling (such as FN steel structure series)
Crossflow: Compact structure, suitable for space-constrained scenarios (such as LXR-300L/SB type)
Equipment diagram
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