Mixed Flow Closed Type Cooling Tower

Closed cooling tower is an efficient and energy-saving cooling equipment, which is widely used in industry, commerce and HVAC systems. Different from the open cooling tower, the closed cooling tower exchanges heat through a closed circulation system, which avoids the direct contact between the cooling medium and the outside air.

Principle of operation

The cooling medium (usually water) is evenly sprayed onto the fill material inside the cooling tower through a spray device, forming a thin film of water. Hot air enters from the bottom of the cooling tower and exchanges heat with the water film, transferring heat to the water film and causing partial evaporation of the water, thereby removing heat. At the same time, due to the crossflow design, the air can flow both upward and horizontally within the cooling tower, increasing the contact area and contact time between the air and water, thus improving heat exchange efficiency. In a closed system, the cooling medium is isolated from the external air, preventing the entry of impurities and pollutants, while also reducing water evaporation losses, enhancing cooling efficiency and water quality stability.

Features

• Efficient cooling

  Mixed-flow closed cooling tower adopts efficient heat exchange design, which can quickly and effectively transfer heat from cooling medium to ensure stable cooling effect.

• Water-saving and energy-saving

  The closed circulation system greatly reduces the evaporation loss and splash loss of water, and the water circulation utilization rate is high, which significantly reduces the demand for water replenishment and saves water resources.

• Stable operation

  The circulating water of closed cooling tower usually adopts soft water closed circulation, which effectively prevents the equipment from being damaged by scale generated in the tower or user equipment during long-term use.

• Environmental protection

  The circulating water of the closed cooling tower through the closed inner circuit is not polluted and can be used continuously. The relative evaporation of spray water is less, which protects the environment to a great extent.  

• Easy Maintenance

  Since the cooling medium circulates within a closed system, it prevents the entry of external impurities and contaminants. This significantly reduces issues such as scaling and corrosion in the cooling system, extends the equipment's service life, and decreases maintenance workload and costs.

• Intelligent control

  Closed cooling towers are usually equipped with fans and pumps controlled by frequency conversion, which can dynamically adjust the running state according to the actual cooling demand to avoid unnecessary energy.

• Low noise design

  Closed cooling towers usually adopt low noise design, and the frequency conversion control of fans and pumps further reduces the operating noise and improves the working environment.

  
  

Main Parts

Cooler The coil is made of stainless steel, offering strong corrosion resistance for acid-base environments; freeze and pressure resistance to reduce winter pipe burst risks; dense surface to prevent scaling and extend lifespan; high heat dissipation efficiency with low maintenance costs. It can be upgraded to red copper tube material.

Fan and Drive Assembly Low-speed aluminum alloy fan paired with a gear reducer, ensuring smooth operation and noise levels below 60 dB(A). The motor is available in explosion-proof or energy-efficient models, supporting multi-speed adjustment with energy savings up to 50%. Motor upgrades to Siemens or WEG motors are compatible.

Spary pump This high-efficiency pump complies with the JIS-C410 standard, featuring large flow rate, low head, anti-clogging design, high efficiency, minimal energy loss, and extremely low power consumption. Its compact structure, small size, and aesthetically pleasing design ensure easy installation, stable operation, and low noise. With high component concentricity, leak-proof performance, and simplified maintenance, the pump offers both reliability and user-friendly functionality.

Customized service Circulating Water Pump / Control Cabinet System / Water Tank / Stainless Steel Housing and Frame / Fasteners (304/316L) / Dual-speed Motors and Variable Frequency Motor Anti-freeze Heaters

Prameter

Application

Mixed-flow closed cooling tower is suitable for many industrial fields, such as metallurgy, aviation, electric power, chemical industry, machinery, petroleum, food, plastics, rubber and so on.