Mixed Flow Closed Cooling Tower

Overview of Mixed Flow Closed Cooling Tower

   Mach Cooling’s mixed flow closed cooling towers, part of the AHCF-D series, combine cross-flow and counter-flow designs for efficient heat exchange in industrial and commercial applications. With a closed-loop system, these towers prevent contamination, reduce water and energy consumption, and offer a lifespan of 10 to 15 years with proper maintenance. Constructed with corrosion-resistant materials like galvanized steel or stainless steel, they are ideal for metallurgy, chemical industries, power plants, and HVAC systems. Compare with our closed circuit cross flow cooling towers for alternative designs.

Video Demonstration

Operating Principle of Mixed Flow Closed Cooling Tower

The mixed flow closed cooling tower combines cross-flow and counter-flow mechanisms for enhanced efficiency: Cooling medium (e.g., water) is sprayed onto fill material, forming a thin water film. Hot air enters from the bottom, flowing upward and horizontally to exchange heat with the water film, causing partial evaporation. The closed-loop system isolates the medium from external air, reducing contamination and water loss while improving cooling efficiency.

Key Features of Mixed Flow Closed Cooling Tower

• Efficient Cooling

  Hybrid design ensures rapid and stable heat transfer for consistent cooling performance.

• Water and Energy Saving

  Closed circulation reduces evaporation and splash loss, minimizing water and energy consumption.

• Stable Operation

  Soft water circulation prevents scaling, ensuring long-term equipment reliability.

• Environmental Protection

  Closed system minimizes water pollution and evaporation, reducing environmental impact.

• Easy Maintenance

  Closed-loop design reduces scaling and corrosion, lowering maintenance workload and costs.

• Intelligent Control

  Frequency-controlled fans and pumps adjust dynamically to cooling demands, optimizing energy use.

• Low Noise Design

  Low-noise fans and pumps, with frequency control, ensure quiet operation suitable for sensitive environments.

Main Components of Mixed Flow Closed Cooling Tower

	Cooler Stainless steel coil with corrosion resistance, freeze and pressure resistance, and a dense surface to prevent scaling. Optional upgrade to red copper for enhanced performance.
Fan and Drive Assembly Low-speed aluminum alloy fan with gear reducer ensures noise levels below 60 dB(A). Supports multi-speed motors (Siemens/WEG compatible) for up to 50% energy savings.
	Spray Pump High-efficiency pump (JIS-C410 standard) with large flow, low head, anti-clogging design, and low power consumption for stable, low-noise operation.
Customized Services Options include circulating water pumps, control cabinet systems, water tanks, stainless steel housing/frames, 304/316L fasteners, dual-speed or variable frequency motors, and anti-freeze heaters.

Technical Parameters of Mixed Flow Closed Cooling Tower

Installation Guidelines for Mixed Flow Closed Cooling Tower

• Select a well-ventilated site free from heat sources or obstructions for optimal airflow.

• Ensure the site’s load-bearing capacity meets the tower’s weight requirements.

• Construct the foundation with a maximum elevation error of ±5mm.

• Maintain adequate spacing for air intake and maintenance access.

• Avoid open flames or welding near the tower; take precautions if necessary.

• Before operation, verify secure connections, lubricate components, and check wiring.

• Assign professional operators for regular inspections and maintenance logging.

Factory Showcase

Applications of Mixed Flow Closed Cooling Tower

• Metallurgy

  Cools equipment during smelting and forging for stable operation.

• Aviation

  Supports cooling for manufacturing and testing processes.

• Electric Power

  Manages heat in power plants for efficient turbine performance.

• Chemical Industry

  Handles heat from chemical processes to ensure safety and efficiency.

• Food Processing

  Cools equipment during food production for consistent quality.

• Plastics and Rubber

  Manages heat in molding and extrusion processes for reliable production.

Maintenance Precautions for Mixed Flow Closed Cooling Tower

• Equipment Maintenance

  Regularly clean dust, oil, and debris from the shell, and remove scale from the heat exchange coil and spray filter to maintain efficiency.

• Water Quality Management

  Use soft water in the heat exchange coil to prevent scaling. Regularly clean spray water (tap water) to avoid scale buildup on copper pipes.

• Pump Maintenance

  Ensure sealed inlet pipes, fill pipelines with liquid, monitor motor current, supervise operation, avoid shutting off cooling water during high temperatures, and inspect for noise/vibration annually.

• Mechanical Seal Maintenance

  Use clean, particle-free lubrication, avoid dry friction, and rotate the pump before starting to prevent seal damage.

Frequently Asked Questions

How does a mixed flow closed cooling tower work?

Process fluid flows inside coils, with spray water and air contacting the coils in a mixed cross-flow and counter-flow manner. Heat is transferred through the coil walls, and the heated air and vapor are discharged by fans, while the cooled fluid is recirculated.

What are the advantages of a mixed flow closed cooling tower?

• High heat transfer efficiency for high-temperature fluids.

• Water and energy savings through reduced consumption.

• Compact design for space-constrained sites.

• Easy maintenance with reduced scaling and corrosion.

How does it differ from a counter flow closed cooling tower?

Mixed flow towers combine cross-flow and counter-flow designs for enhanced heat transfer efficiency, while counter flow towers use vertical airflow for uniform cooling and a smaller footprint.

What is the application scope of a mixed flow closed cooling tower?

Suitable for industrial and commercial fields like metallurgy, power, chemical, food processing, and HVAC systems requiring efficient cooling.

What is the lifespan of a mixed flow closed cooling tower?

With proper maintenance, the lifespan is typically 10 to 15 years, depending on materials, operating conditions, and maintenance practices.

What are the maintenance precautions?

• Inspect fan operation for noise and vibration; clean nozzles and filters.

• Clean coils and packing to remove dirt and algae; use water treatment chemicals.

• Monitor pump operation, ensure sealed pipes, and avoid cavitation.

What materials are used in mixed flow closed cooling towers?

Exterior materials include fiberglass, stainless steel, or galvanized steel; coils are copper or stainless steel; packing is PVC or PP.