PG-C Square Cross-Flow Side-Discharge Underground Cooling TowerUnderground Installation
A square cross-flow side-discharge cooling tower friendly to underground installation.
The PG-C series is a cooling tower line tailored by LANXUN for underground installation. It uses a cross-flow side-discharge structure with the air outlet on the side of the body; after burial, it uses the ground height difference to achieve natural ventilation without a towering tower structure. The body is compact with a small excavation volume, making installation and maintenance convenient. Covering 21 models from 75 to 620m³/h, it is widely used in underground garages, tunnel ventilation, landscape gardens, and other places where cooling equipment needs to be concealed, balancing cooling performance with environmental aesthetics.
Key Highlights
Cross-Flow Side Discharge, Underground-Ready
Side-discharge design uses ground air ducts for natural exhaust after burial, requiring no tall tower body and blending perfectly into the landscape.
Underground-Installation Friendly
Compact structure with shallow excavation depth and low civil-engineering cost; waterproof and moisture-proof design ensures reliable long-term underground operation.
Compact and Small
At the same cooling capacity, the tower height is only 60%–70% of a conventional cooling tower, meeting underground space constraints.
Enhanced Corrosion and Water Resistance
The tower uses reinforced FRP panels with a hot-dip galvanized frame and an internal waterproof coating, adapting to the high-humidity underground environment.
Working Principle and Structural Features
The following content is excerpted from the PG-C Square Cross-Flow Side-Discharge Underground Cooling Tower product manual
Working Principle
The PG-C square cross-flow side-discharge underground cooling tower creatively uses a machine-pressed side panel structure that is attractive, eco-friendly, standard-sized, and highly versatile; it can adapt to various site requirements, including indoor installation.
For heat exchange it uses large hanging fill with a depth of up to 1795mm, combined with variable-diameter multi-stage petal-type (S.H-C.D.F) nozzles, giving a high mass-transfer coefficient βxv; fitted with LANXUN variable-diameter staged petal nozzles, it disperses the water passing through the nozzles into fine droplets spread over the fill sheets.
The upper part of the fan stack is fitted with a flow-guiding shield cylinder designed on aerodynamic principles, which recovers kinetic energy, reduces noise, and cuts hot-vapor recirculation; through scientific calculation and testing, the cooling tower is made more reasonable and lighter while ensuring cooling capacity, to meet the requirements of modern buildings.
Large Hanging Fill
Large hanging fill with a depth of up to 1795mm, combined with variable-diameter multi-stage petal nozzles, provides a high mass-transfer coefficient βxv and full water-air heat exchange.
Variable-Diameter Petal Nozzle
Fitted with LANXUN variable-diameter staged petal nozzles, it disperses the water passing through the nozzles into fine droplets evenly spread over the fill sheets.
Flow-Guiding Shield Fan Stack
The upper part of the fan stack is fitted with a flow-guiding shield cylinder designed on aerodynamic principles, which recovers kinetic energy, reduces noise, and cuts hot-vapor recirculation.
Machine-Pressed Side Panel Structure
A creatively machine-pressed side panel structure that is attractive, eco-friendly, standard-sized, and highly versatile, able to adapt to various sites including indoor installation.
HGI Galvanized Steel
The main frame, bottom frame plates, and side panels are preferably made of HGI high-corrosion-resistance, extra-thick galvanized (700g/m²) steel from Korea's POSCO, the highest galvanized specification in the industry today (ASTM G235, metric Z700).
Technical Specifications
| Model | Cooling Water Flow (m³/h) | Fan Power (kW) | Dimensions L×W×H (mm) | Operating Weight (kg) | Noise dB(A) |
|---|---|---|---|---|---|
| PG-C-75 | 75 | 3.0 | 2200×1800×2400 | 2000 | 50.0 |
| PG-C-90 | 90 | 4.0 | 2400×2000×2600 | 2300 | 50.8 |
| PG-C-105 | 105 | 4.0 | 2600×2200×2700 | 2600 | 51.3 |
| PG-C-125 | 125 | 5.5 | 2800×2400×2900 | 2900 | 51.9 |
| PG-C-145 | 145 | 5.5 | 3000×2600×3000 | 3200 | 52.4 |
| PG-C-165 | 165 | 7.5 | 3200×2800×3200 | 3600 | 53.0 |
| PG-C-190 | 190 | 7.5 | 3400×3000×3300 | 3900 | 53.5 |
| PG-C-215 | 215 | 11.0 | 3600×3200×3500 | 4300 | 54.0 |
| PG-C-245 | 245 | 11.0 | 3800×3400×3600 | 4700 | 54.5 |
| PG-C-275 | 275 | 15.0 | 4000×3600×3800 | 5100 | 55.0 |
| PG-C-310 | 310 | 15.0 | 4200×3800×3900 | 5600 | 55.5 |
| PG-C-345 | 345 | 15.0 | 4400×4000×4100 | 6000 | 55.9 |
| PG-C-385 | 385 | 18.5 | 4600×4200×4200 | 6500 | 56.3 |
| PG-C-425 | 425 | 18.5 | 4800×4400×4400 | 7000 | 56.7 |
| PG-C-470 | 470 | 22.0 | 5000×4600×4500 | 7600 | 57.1 |
| PG-C-515 | 515 | 22.0 | 5200×4800×4700 | 8100 | 57.5 |
| PG-C-565 | 565 | 30.0 | 5400×5000×4800 | 8700 | 58.0 |
| PG-C-620 | 620 | 30.0 | 5600×5200×5000 | 9300 | 58.4 |
Product Gallery
Images are from the PG-C Square Cross-Flow Side-Discharge Underground Cooling Tower product manual
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