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Last updated June. 15, 2018
Keeping the temperature of a place down during the hot periods of the year can be a major challenge in different parts of the world. While there are different types of air cooling solutions, there are some downsides to their usage. It is either they are inefficient, or they are too expensive to use.
In the midst of all these challenges, the air coolers have been found to be very reliable in providing efficient and economical cooling to households and organizations. They have several advantages over electric fans and the expensive air conditioners.
In spite of the numerous advantages they have, there are still a lot of individuals who have limited knowledge of how the units work and why they should be selected ahead of the other available air cooling solutions.
In this post, we will consider exactly what the units are and how they work. We will also consider how they are designed and the major reasons why you must use them instead of the other air cooling solutions.
Evaporative air coolers are cooling solutions that have been in existence for so long. The units have been modified over the years to arrive at the different models available in the market today. They can offer to cool any particular space ranging from 120 square feet to 2,000 square feet.
They use water and fresh hot air to achieve cooling through the natural process of evaporation. They also require electricity (not as much as air conditioners, however).
The process of evaporative cooling results to cooled air instead of refrigerant air that is gotten from the refrigeration process seen in air conditioners.
Evaporative air coolers are also referred to as ventless air coolers because of the fact that they do not make use of vents as is the case with air conditioners and traditional HVAC systems.
There is not so much attached to the process of evaporative cooling. It works just like the natural process of evaporation, only that it enhances the process a little bit. To illustrate, picture what sort of cooling individuals obtain on a hot day on the beach.
On a sunny day at the beach when the heat from the sun becomes intense, it is natural for people to dip themselves into the water to obtain relief from the scorching sun. While the sea water significantly reduces the core temperature of anyone that takes a dip, the ultimate cooling is obtained when an individual steps out of the water.
This cooling is achieved as a result of evaporation of the liquid from the bodies of the individuals. This process is also applicable when an individual sweats during a hot day. As the sweat evaporates from the surface of the body, some noticeable cooling is observed.
The natural processes illustrated above is exactly the same thing that takes place in a ventless air cooler. The process of evaporation, which involves water changing states from liquid to gas, requires a reasonable amount of energy.
The heat energy from the immediate air around the wet bodies is used in the process of evaporation, and as the water escape from the bodies, the air becomes cooler. This is exactly what happens with evaporative coolers.
Another way to understand the entire process of evaporative cooling is to consider the air as a sponge. The dry air will absorb water when it comes in contact with it just like a sponge. The drier a sponge is, the better its ability to absorb water and this is applicable to air too.
The drier and hotter the air is, the better its ability to absorb water and bring about evaporative cooling. This is the major reason why ventless air coolers work best in hot and dry climate.
It is important to note here that evaporative air coolers also increase the humidity of the space it is cooling. As the dry air absorbs the liquid, its moisture level increases and this is what is referred to as humidity.
It also happens that in wet conditions, the efficiency of evaporative air coolers is reduced. This is because the air already contains too much moisture and cannot take up as much as it should. The higher the humidity the lower the ability of air to take up moisture and the lower the effectiveness of the ventless air cooler.
The effectiveness of air coolers in taking advantage of the natural process of evaporation is based on that design. The units are basically boxes that can suck in air from the environment through the cooling pads that are strategically located on either side of the machine.
The pads are constantly drenched by the water pump that draws water from the tank or external source. The pads serve as the evaporative surfaces and determine the amount of cooling that is obtained with the air cooler. It ensures the continuous flow of air, and as far as there is a constant supply of hot dry air, the machines work efficiently.
The ventless (evaporative) air coolers are regarded as the best air cooling solutions and there are justifications for this. One of the most significant reasons for this is the fact that their method of operation is basically natural. They require just two natural elements: water and air.
This makes the process green and clean. It also means that the machines are environmentally friendly. Ventless air coolers are also energy efficient. Due to their simple design, they require only a little amount of electricity to work efficiently.
The amount of energy they consume is just a fraction of what air conditioners use to achieve the same amount of cooling. This means that the cost of running them is quite minimal. Ventless air coolers are also inexpensive units. From purchase price to cost of installation and maintenance, the units are quite affordable to households on a budget.
Ventless air coolers are amazing machines. They have several advantages over traditional air conditioners and HVAC systems. With an understanding of how they work, you should be able to make the right decision about your cooling need. It will be necessary to ensure that there is proper ventilation as you install your air coolers and maintain them properly to enhance efficiency.
If you have any further questions, contact us and we would be happy to help you.