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Last updated Sept. 28, 2018
Evaporative cooling is a natural process that involves the use of two natural elements: air and water. It is the process that helps your body to cool when you sweat or when you dip yourself in a pool of water on a sunny day.
It simply involves the use of heat energy in the hot dry air to bring about evaporation of water from your body, leaving your body cooler as a result.
This is also the exact process recreated by the evaporative coolers when they are used as air cooling solutions in homes, offices and commercial settings.
In this article, we will discuss the process of how evaporative air cooling works and what are some effective ways to improve the efficiency of air coolers.
An evaporative air cooler is a foremost air cooling solution that employs the evaporative cooling process.
It is basically a box-shaped appliance with functional parts that include water tank/supply, a pump system, cooling pads/porous surface and a fan system to facilitate air flow.
The process of evaporative cooling is straightforward. Water is drawn from the water tank/supply by the pump system to the cooling pads to ensure that they are wet at all times.
The fan system sucks in hot dry air from the environment. When the hot dry air hits the cooling pad, the heat energy in the air is used to cause evaporation of the liquid water in the damp pads.
This will reduce the temperature of the air cool and some moisture will be attached to it as it leaves the air cooler to cool.
This process ensures that cool air is steadily pumped from the evaporative cooler to keep the ambient temperature cool and comfortable.
From what we have discussed so far, it is clear to see that evaporative coolers and air conditioners are used for the same purpose, so what is the difference between the two?
The major difference between these two home appliances is the way they operate.
While the evaporative cooler cools air by passing it through water-soaked pads, air conditioners use chemical coolants to condense air and make it colder.
Evaporative coolers will produce cool humid air in the process while air conditioners will produce cold dry air. Evaporative coolers work best with a steady supply of dry air from the outside while air conditioners work best in airtight rooms.
Evaporative air coolers have lots of benefits including:
Though they are highly efficient air cooling solutions, there are ways you can still improve the efficiency of evaporative air coolers.
Here, we will look at some tips that will help you to get the best out of your evaporative air cooler.
To get the best from an evaporative cooler, you have to make sure that the machine is the right size for any space you want to use it in.
By installing the right size of air cooler, you can be certain that your machine wouldn’t have to strain to produce the right amount of cooling. Air coolers are normally rated according to the cubic feet of air per minute (CFM) they can pump.
Firstly, you need to ascertain the CFM requirement of the space you want to use the machine in and then look for a machine that matches your finding.
To estimate the CFM requirement of your space, multiply the area of the space (in square feet) by the height of the ceiling (in feet) and divide the product by two.
That will give you the CFM requirement. Example 800 sq. ft. x 8 ft. = 6400/2. It will give you 3200CFM and you have to buy a machine rated within that region.
To get the best out of your air cooler, it is also important that you adjust airflow in the room it is being used in.
As has been stated earlier, there is a need for fresh air to be entering the house for the evaporative cooling process to continue smoothly. It is also important that some of the air pumped out of the air cooler leaves to avoid moisture build-up.
In fact, it is better when there is a balance in the amount of air that leaves and the amount that enters the space.
This can be achieved by installing air ducts in each room or by opening the windows of the room to a certain degree whenever you are using an air cooler(s).
To get efficient and comfortable evaporative cooling, it is important that you take good care of the evaporative cooler. It is always important to have it serviced at least twice in a year for proper maintenance of the air cooler.
This will not only help you to obtain efficient cooling but will also extend the lifespan of the machine. Here are a few things you can do to keep your air cooler in great shape:
For improved efficiency, it is also important that you use your evaporative cooler with the thermostat that automatically turns the unit off when a certain temperature is reached.
If your cooler doesn’t have a thermostat, it is more likely that there are separate switches for the fan and pump. Allow the fan to run for few minutes before turning on the fan.
It is possible to get more efficient and comfortable evaporative cooling. We have provided adequate information that can help you achieve this and hope that you enjoy the best your evaporative cooler has to offer.
If you have any further questions, contact us and we would be happy to help you.