LMB-F & SF Combined-Flow Dry-Wet Closed Cooling TowerCombined-Flow Closed Circuit
A combined-flow dry-wet closed cooling tower where fill pre-cooling and coil enhanced heat exchange work together.
The LMB-F & SF combined-flow series is a high-end product of LANXUN in the closed cooling tower field. It innovatively connects a fill pre-cooling section and a coil heat-exchange section in series as a combined-flow design: the spray water is first pre-cooled by the fill before being sprayed onto the coil, achieving two-stage cooling of "pre-cool first, then exchange heat," improving heat exchange efficiency by 20%–30% over conventional closed towers. At the same time, fill pre-cooling effectively lowers the spray-water temperature, reducing scale formation on the coil surface and extending equipment life. Covering 28 models from 10 to 710m³/h, it is the preferred choice for clean cooling scenarios such as semiconductors and precision manufacturing.
Key Highlights
Combined-Flow Design
Fill pre-cooling section + coil heat-exchange section run in series for two-stage cooling, improving overall heat exchange efficiency by 20%–30%.
Fill Pre-Cooling Reduces Scaling
Spray water is first cooled by the fill; low-temperature water contacting the coil slows scale deposition and extends the cleaning cycle.
Wide Flow Coverage
28 standard models cover 10–710m³/h, from small laboratories to large industrial production.
Flexible Choice of F and SF Types
The F type is the basic combined-flow type, while the SF type adds a super energy-saving configuration, allowing flexible selection balancing energy savings and investment.
Working Principle and Structural Features
The following content is excerpted from the LMB-F & SF Combined-Flow Dry-Wet Closed Cooling Tower product manual
Working Principle
In the combined-flow closed tower, circulating water flows inside the coil, the outer wall of the coil is wrapped by spray water, the heat of the circulating water is transferred through the coil wall to the spray water, and the spray water then exchanges heat with the inlet air crossing at right angles through the PVC fill, forming saturated hot humid air that is discharged into the atmosphere by the fan.
The cooling tower uses a combined-flow cooling form, with two air-inlet modes: the F series (single-side air inlet) and the SF series (double-side air inlet); the spray water fully wraps the coil, avoiding dry spots at the bottom of the coil that form scale and improving system cooling efficiency; a maintenance walkway is built into the tower body for easy maintenance.
High-Efficiency Heat-Exchange Coil
The coil is made of premium stainless steel/copper/aluminum tube; TP2 phosphorous-deoxidized copper tube is welded with silver-based brazing rod, and SUS304 stainless steel tube is welded by TIG; every coil passes a pressure leak test, and the integrated design is easy to assemble, disassemble, and clean.
Anti-Freeze Energy-Saving Design
The cooler uses an anti-freeze energy-saving design that ensures the circulating water is drained at low temperatures in northern regions to prevent freeze damage.
High-Quality Fill and Drift Eliminator
The fill uses 100% virgin highly flame-retardant PVC material and is installed by hanging without bonding, providing even heat exchange, resistance to clogging, and easy cleaning; the drift eliminator uses a mesh-clamp design for efficient water collection and an extremely low drift rate.
All-Steel Tower Body Structure
The fan stack, panels, and collection basin are all made of heavy galvanized Z700 premium steel for superior durability.
Exhaust and Spray System
The fan and motor use well-known domestic brands, with extremely low noise and failure rates; the spray pump has large flow and low head; the spray system uses centrifugal nozzles that resist clogging.
Technical Specifications
| Model | Cooling Water Flow (m³/h) | Coil Area (m²) | Spray Pump Power (kW) | Dimensions L×W×H (mm) | Operating Weight (kg) | Noise dB(A) |
|---|---|---|---|---|---|---|
| LMB-F-10 | 10 | 28 | 0.55 | 1400×1200×2000 | 800 | 48.0 |
| LMB-F-16 | 16 | 42 | 0.55 | 1600×1300×2200 | 950 | 48.5 |
| LMB-F-25 | 25 | 60 | 0.75 | 1800×1500×2400 | 1200 | 49.0 |
| LMB-F-35 | 35 | 82 | 0.75 | 2000×1700×2600 | 1450 | 49.5 |
| LMB-F-50 | 50 | 115 | 1.1 | 2200×1900×2800 | 1750 | 50.0 |
| LMB-F-65 | 65 | 145 | 1.1 | 2400×2100×3000 | 2100 | 50.5 |
| LMB-F-80 | 80 | 180 | 1.5 | 2600×2300×3200 | 2500 | 51.0 |
| LMB-F-100 | 100 | 220 | 1.5 | 2800×2500×3400 | 2900 | 51.5 |
| LMB-F-125 | 125 | 280 | 2.2 | 3000×2700×3600 | 3400 | 52.0 |
| LMB-F-150 | 150 | 330 | 2.2 | 3200×2900×3800 | 3900 | 52.5 |
| LMB-F-180 | 180 | 390 | 3.0 | 3400×3100×4000 | 4500 | 53.0 |
| LMB-F-215 | 215 | 460 | 3.0 | 3600×3300×4200 | 5100 | 53.5 |
| LMB-SF-250 | 250 | 530 | 4.0 | 3800×3500×4400 | 5800 | 54.0 |
| LMB-SF-290 | 290 | 610 | 4.0 | 4000×3700×4600 | 6500 | 54.5 |
| LMB-SF-340 | 340 | 700 | 5.5 | 4200×3900×4800 | 7300 | 55.0 |
| LMB-SF-400 | 400 | 810 | 5.5 | 4400×4100×5000 | 8100 | 55.5 |
| LMB-SF-470 | 470 | 930 | 7.5 | 4600×4300×5200 | 9000 | 56.0 |
| LMB-SF-550 | 550 | 1060 | 7.5 | 4800×4500×5400 | 9900 | 56.5 |
| LMB-SF-630 | 630 | 1200 | 11.0 | 5000×4700×5600 | 10800 | 57.0 |
| LMB-SF-710 | 710 | 1340 | 11.0 | 5200×4900×5800 | 11800 | 57.5 |
Product Gallery
Images are from the LMB-F & SF Combined-Flow Dry-Wet Closed Cooling Tower product manual
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