What is Evaporative Air Cooler? How does It Work?

Evaporative air coolers are especially suitable for dry climates, not only low power consumption but also more friendly to the environment, and are gradually becoming an important equipment in energy saving and environmental protection refrigeration. Next, we’ll take a deeper look at how it works, and what it does.

What is an Evaporative Air Cooler?

Evaporative air cooler is an electrical appliance that cools the air by evaporating water and absorbing heat. Through the evaporation of water and the circulation of air, the evaporative air cooler can continuously provide fresh and cool air.

Evaporative air cooler is mainly composed of a fan, a water circulation distribution system, an electrical control system, a filler and a shell. Among them, the filler layer is a key component to increase the contact area between water and air, and is usually made of special treatments such as kraft paper, fiberglass, metal materials or ceramics.

Unlike traditional air conditioners, evaporative air coolers use natural evaporation of water to generate cold air. There is no compressor system and refrigerant, so it greatly saves electricity costs and can provide a large amount of fresh air. It is more environmentally friendly and can effectively reduce energy consumption.

With the improvement of global environmental awareness, the market demand for energy-saving equipment continues to grow, and evaporative air coolers have become more and more popular in home, commercial and industrial applications.

Working Principle of Evaporative Air Coolers

The core working principle of the evaporative air cooler is to use the heat absorption property of water evaporation to cool the air. When hot air passes through the wet curtain inside the air cooler, water evaporates and absorbs heat, thereby lowering the temperature of the air and producing cool wind. During the whole process, the air needs to flow continuously, and the wet curtain is constantly kept moist by the pump to maintain a continuous cooling effect.

Specific Steps of The Cooling Process

1. Hot air is sucked in from the outside and enters the device through the fan.
2. The air passes through the wet curtain, and the water evaporates and absorbs heat from the air.
3. The cooled air is sent out to lower the indoor temperature.

The necessary conditions for the operation of evaporative air coolers include sufficient water, good air flow, and high-quality evaporation materials such as wet curtains. These elements work together to ensure that the equipment can work efficiently for a long time.

Evaporative Air Conditioners VS. Air Conditioners

There are significant differences between evaporative air conditioners and traditional air conditioners in many aspects. These differences are mainly reflected in working principles, energy consumption, applicable environment, installation and maintenance, and health and comfort.

Working Principle

Evaporative air conditioners reduce air temperature through the natural evaporation of water. A fan blows air through a moist medium, and the water molecules absorb heat as they change from liquid to gaseous state, cooling the surrounding air. This is a physical process that does not involve complex refrigerant cycles.

Traditional air conditioners use the circulating flow of refrigerant to cool the air through processes such as evaporation, compression, condensation and expansion. Air conditioners transfer heat between indoors and outdoors, keeping indoor temperatures cooler. This is a complex process involving chemical and physical changes.

Energy Consumption

Evaporative air conditioners consume less energy because their main energy sources are water and fans and do not require refrigerants or powerful compressors. Traditional air conditioners require refrigerants and energy-intensive compressors, and their energy consumption is relatively high.

Applicable Environment

Evaporative air conditioners work better in environments with lower relative humidity because water evaporates more easily in dry conditions, providing a stronger cooling effect. Traditional air conditioners are suitable for various environments, especially indoor places that require precise temperature and humidity control.

Installation and Maintenance

Evaporative air conditioners are relatively simple to install and maintain and generally do not require complex ductwork. Just clean the water tank and evaporation medium regularly. Traditional air conditioners are more complex to install and require ductwork and professional maintenance to ensure they work properly.

Health and Comfort

Evaporative air conditioners can effectively remove dust and odors from the air, providing users with a fresh and pleasant working environment. At the same time, because evaporative air conditioners do not produce condensed water, they reduce the increase in indoor humidity and help keep indoor air dry and comfortable.

Although traditional air conditioners can lower indoor temperatures, long-term operation may cause indoor humidity to be too low, making people feel dry skin and uncomfortable mouth and tongue. In addition, the noise of traditional air conditioners may also have a certain impact on the comfort of the living space.

Main Functions of Evaporative Air Coolers

The evaporative air cooler not only has a cooling function, but also has other practical functions, making it suitable for a variety of scenarios:

Cooling

Through the principle of evaporation to effectively reduce the ambient temperature, to create a comfortable working and living environment.

Humidification

The evaporation cooling process increases the humidity in the air, especially suitable for dry areas, to avoid the discomfort caused by too dry air.

Air Filtration

The partial evaporative air cooler is equipped with an air filtration function that can filter dust and impurities in the air to provide fresher and healthier air.

Energy Saving

Compared with traditional air conditioners, evaporative air coolers consume less electricity and do not use any environmentally harmful refrigerants, reducing carbon emissions.

Easy Operation

Equipment installation and operation is simple, most evaporative coolers do not require complex professional maintenance, users can easily master daily use and maintenance.

Advantages and Limitations of Evaporative Air Coolers

Advantages

• Low energy consumption and low operating costs: evaporative air cooler only needs electricity to drive the fan and water pump, which consumes little power and greatly reduces the use cost.
• Simple structure, easy maintenance: the equipment structure is relatively simple, does not require complex mechanical parts, maintenance costs are low, daily cleaning and adding water can maintain good operation.
• No environmental pollution: the evaporation cooling process will not emit greenhouse gases, harmless to the environment, in line with modern environmental protection requirements.

Limitations

• Strong humidity dependence: evaporative air coolers have poor cooling effect in high humidity environments, so they are not as effective as dry areas when used in tropical or coastal areas.
• Water needs to be added regularly: The equipment requires water to maintain the evaporation process, the user needs to add water regularly, and regularly clean and replace the wet curtain to ensure optimal operation.

Conclusion

Evaporative air coolers have become a popular refrigeration solution in the home, commercial and industrial fields due to their energy-saving and environmentally friendly characteristics. It not only effectively reduces energy consumption, but also has significant cost-effectiveness and environmental advantages. In global warming and energy shortage, evaporative air coolers, as sustainable refrigeration equipment, have broad market prospects and development potential. In the future, with the further development of technology, evaporative air coolers will play an important role in more application scenarios, providing users with a more green and efficient cooling experience.

Wanjiada: Leading Evaporative Air Coolers Manufacturer

Wanjiada is the world’s leading manufacturer of evaporative air coolers, dedicated to providing customers with efficient, energy efficient and environmentally friendly refrigeration solutions. Founded in 2001, the company has advanced production facilities and a strong R&D team, and its products cover many types of air coolers, air purification fans, air circulation fans and so on.

We focus on the research and development, manufacturing and wholesale of evaporative air coolers, through continuous innovation and strict quality control, Wanjiada is committed to providing customers around the world with a comfortable and healthy air environment, while promoting the development of energy-saving and environmental protection technology. Please contact us to know or purchase our wholesale evaporative air coolers.