Cooling Tower Operating Principle Diagram

I. Cooling Tower Principle

1. What is a cooling tower? It is a device that uses water as a circulating coolant to absorb heat from a system and release it into the atmosphere, thereby reducing the water temperature. The cooling process is achieved through the evaporation of water, allowing the cooled water to be continuously recycled. From an economic perspective, this approach effectively minimizes cost waste.

2. What is its cooling principle? The cooling method used in cooling towers involves spraying hot water onto the surface of the heat-dissipating material, where it comes into contact with air flowing through. At this point, significant heat exchange occurs between the hot water and the cooler air. Simultaneously, a portion of the hot water evaporates—transferring its latent heat of vaporization into the surrounding air. Finally, the cooled water drips back into a collection basin, from which it is pumped to the heat exchanger, where it once again absorbs heat.

Oasis Ice Peak Cross-Flow Closed Cooling Tower

Operating principle:

Internal circulating water system: The cooled circulating water flows out of the tower through the coils and is pumped back to the heat source (the equipment being cooled) by the system's circulating water pump. After absorbing heat and warming up during the heat exchange process, the circulating water then returns to the coils for further cooling.

External circulating water system: External spray water is cooled as it comes into contact with the coil and packing, transferring heat to cool the water circulating inside the coil. The cooled water then falls into the lower water tank, where it is pumped back to the spray water tank by the spray water pump for reuse in the cycle.

The internal loop facilitates heat and mass exchange between the cooling water flowing through the coil and the spray water and air outside the tubes, preventing direct contact between the cooling water and air that could lead to water quality contamination. Additionally, since the spray water is pre-cooled by passing through PVC packing, the heat transfer efficiency is significantly enhanced.

Oasis Ice Peak Counterflow Closed Cooling Tower

Work process:

The spray pump draws water from the sump, pumps it to the upper part of the heat-exchange coil, and then sprays it upward in an umbrella-like pattern through nozzles. This creates a continuous, even water film that evenly coats the outer surface of the tubing. As the water flows over the tubes, some of it absorbs the high-temperature refrigerant's thermal energy inside the pipes, converting it into latent heat of vaporization and causing the water to evaporate into gas. Meanwhile, the refrigerant within the tubes is cooled down or condensed into liquid form. Any remaining non-evaporated spray water eventually drips back into the spray water sump.

The ventilation system features a suction-type fan at the tower's top, which draws air from inside the tower and exhausts it outward. Meanwhile, cool, dry air from outside the tower enters through the air intake grille, passes through filters to remove impurities, and then flows upward along the bottom of the heat-exchange coil. This process carries away the evaporated water vapor, increasing both the humidity and temperature of the air before it is finally expelled back outside by the fan.

A float valve is installed inside the spray water tank to automatically replenish and supply water when the water level drops, ensuring a consistent water level in the tank.

Electrical control automatically manages the start and stop of the spray pump and fan based on the refrigerant outlet temperature, achieving energy-saving goals.

Oasis Ice Peak Composite Closed-Loop Cooling Tower

How it works:

The working fluid (water, oil, or other liquids) flows through the coil, while the outer wall of the coil is continuously sprayed with water. Heat from the fluid is transferred through the tube walls, causing the water and air to become saturated with moist, hot steam. This steam is then exhausted into the atmosphere via a fan. Meanwhile, the spray water circulates through PVC heat-dissipating fins, where it gradually cools down before being reintroduced into the system. Fresh incoming air flows in the same direction as the cooled spray water, creating a concurrent airflow pattern. Primarily relying on the principle of wet-heat conduction, the key feature that makes this closed-loop cooling tower highly effective is its ability to minimize scale buildup on the outer surface of the coil.

Handan City Oasis Environmental Equipment Co., Ltd. (Handan City Bingfeng Cooling Equipment Co., Ltd.) was established in 2003 and is located in the Development Zone of Feixiang District, Handan City, an ancient city renowned for its rich history and cultural heritage. The company is dedicated to the research, development, and production of cooling equipment.

Oasis Ice Peak boasts two independent workshops that independently produce closed-circuit cooling towers, backed by professional and rigorous factory inspection techniques—ensuring both efficiency and superior quality.

Compared to some small manufacturers that rely on OEM production, Oasis Bingfeng boasts a more comprehensive after-sales service system, ensuring you can shop with confidence and use our products with peace of mind! Our customer service team and dedicated after-sales technical support are ready to respond swiftly to your needs.

Simply leave a message on the WeChat Official Account to enjoy quick responses to after-sales inquiries—any product quality issues will be addressed within 24 hours, with a dedicated technician dispatched to your site for repair or replacement! Designed for an even longer service life, our company adheres to industry-leading quality control standards, significantly enhancing corrosion resistance. As a result, these products typically last more than 10 years with proper maintenance, while ongoing upkeep and associated costs remain remarkably low.

Oasis Environmental Protection Company boasts 17 years of expert experience in manufacturing closed-circuit cooling towers, backed by collaborations with universities. We also have a robust research team and state-of-the-art production equipment, enabling us to dedicate ourselves long-term to the research and development of cooling technologies. As a result, we can produce a wide range of cooling equipment models tailored for diverse applications across various industries.

The Oasis Ice Peak BFL series closed-circuit cooling towers feature advanced cooling technology, along with optimized equipment structure and materials, making the products more efficient, energy-saving, environmentally friendly, and delivering superior overall stability at a higher cost performance!