Engineering Tunnel Cooling Freezing Air Unit

During tunnel excavation, high-temperature surrounding rock may expose workers and equipment to extreme heat, adversely affecting health and work efficiency. Traditional tunnel cooling methods rely on ventilation, which draws fresh air from the tunnel entrance and delivers it near the excavation face. However, in long tunnels, the air heats up due to prolonged exposure to high temperatures from the surrounding rock, reaching nearly the same temperature as the tunnel environment before it arrives at the work area, rendering the cooling effect minimal. Efficiently and economically reducing high temperatures in deep, long tunnels during construction to improve the working environment is an urgent issue. Therefore, a movable, custom-designed freezing air unit must be installed in the tunnel to provide localized cooling in the work area, lowering the temperature and creating a cooler environment for construction personnel.

Unit Advantages

1.Compressor refrigeration, high cooling capacity, adjustable temperature from 5°C to 30°C ±3°C (adjusted based on actual conditions),

3. Rapid cooling, high air volume, ventilation, dehumidification, dust prevention, and heatstroke prevention advantages. Improves mining efficiency, saves electricity, reduces costs, quick installation, and easy maintenance.

4. Integrated unit design for easy mobility.

5. All components are original, brand-new products from the factory, using stable and reliable brands with low failure rates. Our company strictly prohibits the use of refurbished compressors.

Working Principle

Select a location in the tunnel to place the cooling freezing air unit. It extracts air from the tunnel, cools it, and uses it as a cold source. The fan then delivers this cold air to the mining work area for effective cooling, reducing the temperature to the desired level.

Tunnel Cooling Freezing Air Unit Features.

1. Scientifically designed, meticulously manufactured, aesthetically pleasing appearance, reliable performance, and high quality.

2. Equipped with centrifugal fans for high air volume, long-distance air delivery, and low noise.

3. The unit includes eight protection functions: high-pressure protection, low-pressure protection, phase sequence protection, phase loss protection, overheating protection, overload protection, freeze protection, and air shortage protection.

4. The unit control uses a human-machine interface microcomputer system, which can include a touch screen and features an R485 communication port for remote control.

6. Uses national standard refrigerants. Our company independently develops mixed refrigerants that can be selected based on different usage environments.

Our Services

1.All our equipment comes with a one-year warranty and lifetime maintenance (excluding human factors and consumables).

2.Upon receiving a written repair request from the customer, we respond within 36 hours for repairs within Guangdong Province and 72 hours for repairs outside Guangdong Province..

3.Goods are transported via road logistics directly to the user’s location. For urgent needs, dedicated vehicles can be arranged.

Unit Technical Parameters

Note: 1. Inlet air dry bulb temperature 23°C, wet bulb temperature 17°C: the dry bulb temperature of 23 ℃, wet bulb temperature 17 ℃.

2. Condenser inlet water temperature 30°C, condenser outlet water temperature 35°C. Cooling water temperature into 30°C, Cooling water temperature for 35°C.

2. The above parameters are subject to change without prior notice. The above parameters are subject to change without prior notice.