A complete analysis of the core technology of air coolers

In the pursuit of a comfortable indoor environment, air coolers have emerged with their unique advantages. Whether in industrial plants, commercial places, or residential buildings, air coolers can play an excellent role in cooling and ventilation. This is inseparable from a series of advanced core technologies. Let's take a closer look at the core technologies of air coolers.

Evaporative wet pad technology

Evaporative wet curtains are the key core components of air coolers. The principle is based on the heat absorption characteristics of water evaporation. When hot air passes through the wet wet curtain, the water evaporates quickly and absorbs the heat in the air, thereby cooling the air. This technology is inspired by nature, just like the coolness people feel at the seaside, which is the evaporation of seawater to absorb heat and lower the air temperature.

Early evaporative cooling wet curtains can be traced back to Egypt 2,500 years ago, when people used reeds to weave curtains and added water to cool the room by air convection and water evaporation. In the 19th century, the United States used wood wool as evaporative cooling wet curtains. The modern paper medium wet curtain was invented by Swedish scientist Carl Monte in the 1970s. Since then, people have continuously developed related energy-saving and environmentally friendly equipment based on this.

Today's wet curtains are usually made of multi-layer corrugated fiber laminates. This structure greatly increases the contact area between air and water and improves evaporation efficiency. Taking the common 100mm thick multi-layer corrugated fiber laminate wet curtain as an example, its cooling ability is extremely outstanding. At the same time, the wet curtain also has good water absorption and ventilation, which can ensure that the water is evenly distributed and the air is fully in contact with the wet surface. In addition, some wet curtains also have a certain filtering function, which can effectively filter dust and other impurities in the air and purify the air. The filtering efficiency can reach more than 80%.

Ventilation and air circulation technology

Fan technology: The fan inside the air cooler is responsible for promoting air flow and realizing the exchange and circulation of indoor and outdoor air. The performance of the fan directly affects the air supply volume, air pressure and air supply distance of the air cooler. At present, most air coolers use fans with three-impeller airfoil-shaped forward-swept blades, which have the significant advantages of low noise and high efficiency. Its unique blade design can push air more efficiently and generate greater wind pressure, so that the air supply volume can reach 18,000 cubic meters per hour or even higher, and can transport cold air to a longer distance to meet the needs of different spaces.

Air duct design: Reasonable air duct design is crucial to optimizing the air flow path and improving ventilation efficiency. The air duct of the air cooler needs to be carefully designed according to different air outlet methods (such as bottom air outlet, side air outlet, top air outlet) and installation scenarios (wall installation, window installation, floor installation, etc.). For example, in some occasions where long-distance air supply is required, variable diameter air ducts are used to maintain wind speed and reduce wind resistance; when the indoor space is more complex, the direction of the air duct is reasonably planned to ensure that the cold air can be evenly distributed to every corner to avoid ventilation dead corners. At the same time, the sealing of the air duct cannot be ignored. Good sealing can prevent air leakage and ensure the cooling effect of the air cooler.

Intelligent control technology

Temperature control: The air cooler is equipped with an advanced temperature sensor that can monitor the indoor temperature in real time. By comparing with the preset temperature, the intelligent control system automatically adjusts the operating status of the air cooler. When the indoor temperature is higher than the set value, the system will increase the fan speed or increase the water supply of the wet curtain to increase the cooling power; when the temperature reaches or falls below the set value, the system will reduce the fan speed or reduce the water supply to maintain a stable indoor temperature, achieve precise temperature regulation, and create a comfortable environment for users.

Humidity control: Considering that different environments have different requirements for humidity, some high-end air coolers have humidity control functions. The humidity sensor monitors the indoor humidity in real time. When the humidity is lower than the set range, the system automatically increases the amount of moisture evaporation from the wet curtain to increase the air humidity; when the humidity is higher than the set range, the system reduces moisture evaporation or starts the ventilation mode to reduce indoor humidity, meeting the needs of industries such as textiles and printing that have specific requirements for humidity.

Automatic function: The air cooler also has a variety of automatic functions, such as automatic cleaning. Users can set the automatic cleaning time within 3-8 hours according to actual needs (the default for models without speed regulation is 3 hours). The system automatically starts during cleaning to clean the wet curtain, chassis and other parts, effectively preventing bacteria growth and odor generation, and ensuring the sanitation and operation of the air cooler. In addition, there is a water level control function. When powered on for the first time, the system will automatically control the water inlet valve according to the water level to ensure that the water level is in the appropriate range; during operation, when the water level is too low, water will be automatically replenished, and when the water level is too high, water will be stopped to ensure the normal operation of the air cooler.

High efficiency and energy saving technology

Energy-saving motor: The air cooler uses a high-efficiency energy-saving motor to reduce energy consumption. For example, the power of its main motor is generally only 1.1kW, which is significantly lower than that of traditional central air conditioners, and is only 1/8 of the power consumption of traditional central air conditioners, greatly saving energy costs and conforming to the development trend of energy conservation and environmental protection in today's society.

Optimize heat exchange: The heat exchange efficiency is improved by optimizing the contact mode between the wet curtain and the air, the air duct structure, etc. When the hot air passes through the wet curtain, it can more fully exchange heat with the water, achieve cooling with less energy consumption, and reduce energy consumption while ensuring the cooling effect.

The core technologies of air coolers work together to bring users an efficient, energy-saving and comfortable cooling experience. From the efficient cooling of evaporative wet curtains, to the reasonable layout of ventilation and air circulation technology, to the precise regulation of intelligent control technology and the application of efficient energy-saving technology, each technology is constantly developing and improving, driving the continuous innovation of air cooler products, meeting the increasingly diverse market needs, and creating a better indoor environment for people.