As the cold of the winter months falls to give way to a soft and colorful spring, we often tend to idealize the climate of the place. However, this relief is often short-lived, because the hot and humid summer that follows already reserves something else for us. As summer begins to roar and temperatures begin to rise, getting out in the sun seems like a daunting task. But, there is not much respite to stay inside either. The discomfort and discomfort caused by the heat often leave us completely sweaty and opposed to the summer even when we are inside the four walls. In such scenarios, an external cooling source is needed to combat high temperatures and create an environment conducive to the proper functioning of the human body.
That’s when an air cooler comes to the rescue …
A air cooler serves as the ideal compromise between the comfort afforded by a standard ceiling fan and a robust air conditioner, both in terms of initial cost and recurring expenses in the name of utility bills. Therefore, it is one of the most sought after home appliances.
Physical principles of Air Cooler
Let’s start with the basics, in order to understand the operation of an air cooler. Then we will discuss the different types of air coolers available on the market, as well as the advantages and disadvantages of each. We will then analyze some important aspects of the air coolers before buying it. We will then discuss how some brands are trying to reduce manufacturing costs and produce products below face value, which have a very short shelf life and require frequent maintenance. After that, we will decide which are the best air conditioners available on the market, not only effective for cooling the space, but also composed of high quality and durable elements, thus offering the best value for money. .
You may be happy to know that my father works in a company that makes household and kitchen appliances, such as washing machines, refrigerators, air coolers, vacuum cleaners, and so on. how some brands are trying to reduce their manufacturing costs to increase their profit margin, etc.
Today, I will do my best to share the knowledge I have gained from my father over the years to help you make a good purchase decision.
So without more, let’s start …
THE BASICS of Air Coolers
An air cooler is a device that works according to the principle of evaporative cooling of water. As a result, air coolers are also known as “evaporative coolers” in some places. Evaporative cooling is based on the fact that water absorbs a large amount of heat to evaporate. The temperature of the air drops significantly during the phase transition of the water from a liquid state to a vapor state.
This method of cooling the air consumes much less energy than the principle of refrigeration used in air conditioners. Lower energy consumption translates into lower electricity bills, resulting in higher savings. In dry climates, evaporative cooling also offers the added benefit of increasing the moisture content of the air, providing additional benefits to consumers.
The surrounding warm air is drawn into the air cooler, where it passes through humidified pads. A water tank located at the bottom of the air cooler provides a continuous supply of water to the cushions. An electric pump installed inside the air cooler directs the jets of water from the water tank to the cooling pads and humidifies them. Wet pads absorb heat from the air, which causes moisture to evaporate from the cooling pads, allowing the air to cool down to 8-12 degrees Celsius and improve thus its moisture content. Fresh, moistened air is then recycled by an electric motor driven fan into the environment, which lowers surrounding temperatures and provides comfort for those nearby.
Air cooler are mainly manufactured in three configurations: –
1. Personal air coolers
2. Desert/ window coolers
3. Cooling tower
1. Personal air coolers
As the name implies, individual air coolers are mobile cooling devices that can effectively cool surfaces up to 200 square feet and can be moved to any location in the home, as needed. Due to the relatively small area of personal air coolers, they are better suited to medium-sized rooms and / or lounges. Swivel wheels are attached to the bottom of the air cooler frame, which helps increase the handling quotient of personal air coolers, making them highly versatile, ready for immediate use. Because of their small footprint, individual air coolers have a limited capacity water storage tank. In some cases, it may be necessary to fill the tank twice a day.
2. Desert / window air coolers
This category of air coolers is highly appreciated by buyers for the fact that its cooling prowess is not limited to a bedroom or a small living room, but to areas greater than 550 square feet. Therefore, a single air cooler in the desert is enough to adequately cool a significant part of the house. Desert air coolers are also known as “window air coolers” because their installation location is a window, as is the case of window air conditioners. Unlike individual air coolers, desert air coolers must be installed by a qualified technician, who fills gaps and crevices with appropriate material, resulting from removal of window glass and installation in place.
3. Cooling tower
Tower air coolers are generally quite similar to personal air coolers, both in terms of maneuverability and efficient surface, they can effectively cool, but with the added benefit of an even smaller form factor and a more aesthetic form factor compared to personal air coolers. Because tower air coolers are taller than they are wide, they take up less floor space than personal air coolers, making them an ideal choice for homes where space is a bit restricted.
Now, after learning about the three types of air coolers and the effective surface that each of them can effectively cool, discuss the advantages and disadvantages of air coolers.
Low energy consumption.
A typical 1.5 tonne window air conditioner with a 5 star energy rating consumes approximately 1.4 to 1.8 units of electricity per hour. While a desert cooler consumes 0.2 to 0.5 units of electricity per hour. Assuming both devices operate 8 hours a day, energy consumption could be reduced by about 40%, which would significantly reduce electricity bills.
Little or no maintenance. Apart from the annual replacement of the relatively inexpensive cooling cushions, the air coolers do not require any other type of maintenance. For example, unlike air conditioners, which must be thoroughly cleaned every season before they can be commissioned, the air coolers can be commissioned as they wish, having installed only new cooling pads.
Since the air coolers operate on the principle of evaporative cooling, the phenomenon implies that in addition to the cooling of the zone, the humidity and humidity levels of the ambient air are also increased. The results are somewhat comparable to the breeze rich in fresh moisture that one might feel next to a waterfall. Therefore, areas that are mostly dry, where ambient air has a low moisture content, would greatly benefit from the double characteristics of the air coolers. Even in coastal areas and other relatively humid areas, air coolers are an excellent proposition in the months leading up to precipitation.
No use of refrigerants.
Unlike air conditioners that use refrigerants such as Hydro-Chloro-Fluoro-Carbon (HCFC) or Hydro-Fluoro-Carbon (HFC) to provide the necessary cooling, air coolers are composed only of air and water. ‘water. These sophisticated odor-free refrigerants that find their application in air conditioners after accidental leakage can be harmful to humans if inhaled.
The air is dry. In general, the humidity level to which air coolers are most effective is less than 65%. If the humidity level is higher, the excess moisture created in the house by the air cooler will only add to the discomfort and general discomfort in breathing. In such a scenario, the use of an air conditioner may prove to be the only source of respite.
Continuous monitoring of the water level.
Since all air coolers rely on the availability of water in the storage tank, it is necessary to periodically renew the water in the tank. In addition, charging water into the tank is a chore in itself because you have to unload several buckets of water depending on the capacity of the water tank or connect a hose to the inlet port of the tank. water, then monitor the water level and disconnect the hose before the tank overflows. In the same vein, if you are more inclined to use a simple device that does not require periodic monitoring, an air conditioner is a better choice.
So, after analyzing the advantages and disadvantages of owning an air cooler, let’s take a look at some of the important aspects of air coolers that you should consider before buying one:
IMPORTANT POINTS TO CONSIDER
For most homes, an air cooler with a capacity of 130 to 230 W would be an ideal choice. A power of less than 130 W would result in a relatively less powerful cooling and greater than 230 W would provide excellent cooling, but would result in higher energy consumption which would result in higher than expected electricity bills. Therefore, a rated power in the range mentioned would ensure a perfect balance between efficient cooling and energy efficiency.
Types of cooling pads.
The cooling pads of air coolers can be made mainly from two materials: cellulose or wood chips / synthetic fibers. Cooling cushions that use cellulose have the appearance of honeycomb and are appropriately named “honeycomb cooling cushions”.
This category of cooling cushions is very durable and very effective and requires in most cases a replacement only once in two seasons. However, they are expensive in nature, typically three times more expensive than the second type of cooling pads called “aspen / wood wool cooling cushions”.
Aspen cooling cushions have the appearance of dried grass and the texture of wood chips. These cooling pads are relatively less efficient than those in honeycomb, but are very economical. As a result, air coolers using asphalt cooling pads are also relatively less expensive.
Now, after considering what to keep in mind before buying a air cooler, let’s look at how some manufacturers (names not retained) are trying to reduce their manufacturing costs to maximize their own profits providing customers with substandard products , whose components have a very short service life and may require frequent maintenance.
COST CUTTING TECHNIQUES
Low temperature electric motor overheating.
The electric motor runs at a very high speed to supply the blower with fresh humidified air into the environment.
This makes the electric motor one of the most crucial components of the air cooler and therefore represents nearly 30% of the total cost of the product.
Therefore, it is one of the favorite areas of some manufacturers to reduce their costs and increase their profit margins.
Some manufacturers use an insufficient electric motor that is not powerful enough to allow the fan to run at high speed for long periods of time. After only a few minutes of use, these electric motors tend to become extremely hot.
As you may be aware, the heating increases due to the expansion of the metals, which causes the initial deformation of the copper coils in the motor and then their melting, thus leaving the air cooler out of service.
The cost of engine repair can range from a few hundred dollars to over a thousand dollars and this process is recurrent.
Ineffective cooling pads.
The cooling performance of an air cooler results from the material used in the manufacture of the cooling pads and their thickness.
Generally, cooling pads with a thickness greater than 85 mm are the most effective for cooling the space sufficiently.
Thicker cooling pads also last longer than their thinner counterparts and require less frequent replacement.
However, the thicker cooling pads are a bit expensive.
Thus, in order to reduce production costs and the total cost of the product in order to attract innocent customers,
some manufacturers use thinner and poorly manufactured cooling pads,
is inadequate, which often leaves users uncomfortable and uncomfortable despite the fact that the air cooler runs long.
Now that we have learned how some manufacturers are reducing their costs, let us focus on some of the best air-cooler on the market that offer not only efficient cooling capabilities, but also components that provide reliable and sustainable service, thus providing more value for the money spent.
Best Brand of Air Coolers in India in 2019
Here are some of the most popular brands of indoor air coolers in India. These are the ones available online at e-commerce stores. From these Symphony leads in popularity. But if you are someone looking to cool the entire room without using an air conditioner, the best alternative is to choose the Desert coolers installed on a window. Those with metal body is the best. Brands like Ram Coolers make such coolers. But they are not available online at e-commerce stores. Indoor air coolers add to the humidity of the room.
Best Air Coolers in India in 2019
Here are a few handpicked ones:
- Symphony Kaizen Jr. (For Room Size 99 sqft)
- Symphony DiET 12T (For Room Size 99 sqft)
- Bajaj Frio (For Room Size 150 sqft)
- Symphony HiCool i (For Room Size 177 sqft)
- Symphony Touch 55 (For Room Size 251 sqft)
- Cello Swift (For Room Size 300 sqft)
- Usha Honeywell CL601PM (For Room Size 375 sqft)
- Crompton ACGC-DAC555 (For Room Size 650 sqft)
Tips for better operation of air coolers
1. Unlike the myth of closing all doors and widows while using air cooling, good ventilation will work in your chiller’s favor. Keep doors and windows open so that enough fresh air circulates in the room. And placing the cooler near the window will be an added benefit and will cool the room faster.
2. If there is a foul odor from your cooler, this is an indication for cleaning it. Cleaning and maintaining your cooler will help increase its shelf life.
3. The addition of ice water or ice in coolers will lower temperatures even further. So, using ice water is a good idea on very hot days.
Main questions asked about air coolers
We know you have questions in mind. Check out the list below and you may find an answer here. It is best to answer questions before buying or ordering online.
How often do I need to fill water?
Most air coolers should last half a day for those of medium size. Depending on the temperature of the day, the size of the air cooler, and the temperature of the room itself, you may need to continue filling if it is hot. In general, most water tanks do not need recharging for at least 4 to 6 hours.
Can I put ice cream or does it have a cooler?
Yes. Most cooling towers would have a cooler or allow you to put ice, but be sure to check the model and design if this is the case.
How often do I need to change the cooling Pads ?
Proper maintenance is the key to having longer cooling pads. Honeycomb buffers last longer than others, but you should clean your heater regularly. Most of them should be serviced at least twice a year. If you stop using the air cooler for a while, be sure to remove the cooling pads and clean the unit.
What air cooler should I have?
The size of the room you want to cool will be the best answer. If you have a small room and only a few people, personal coolers can work for you. If you want a bigger air cooler, everything will be fine. But you should not have a small cooler for a larger room.
Does it have a swing feature?
Carefully read the models you want to examine. Each model would indicate whether it has a 3 or 4 way deviation. The 3 or 4 way deflection distributes cold air evenly throughout the room. If this is not mentioned, then it can have a standard 2-way deviation or a manual button.
Does it have a guarantee?
Most air coolers have a warranty of at least one year. Always ask before buying.
Will it work on an inverter?
Most air coolers work with inverters. Check the capacity of your inverter if it can support your air cooler before connecting it.
Do the air coolers have a remote control?
Not all models come with a remote control. Make sure you check the model you buy. It is better to ask before ordering.
If you have a question in mind that she is not there, read each product review and you may find it.
Air Cooler Buying Tips
So, if you decide to buy a personal icebox, desert or tower, do not forget to ask where you would use it? Our list of the best aircoolers should give you the right idea of how to choose among them. So here are our latest shopping tips for you:
Know where you would use it – in a small, medium or large room.
Think about the maintenance, for example how often you would need to fill with water.
Choose the right size – a tower air conditioner may be preferable, but can your room adapt to its size?
Consider your budget – do not forget to check discounts to save money or adjust to your budget.
Check if it’s portable or has casters – if you want to move it from one part of the room to another.
Check if air deflection is sufficient for your room – you may want a 3 or 4 way deflection.
Finally, read the information on the duration of the manufacturer’s warranty or service centers near you.
We hope our guide has given you the best air cooler you are looking for. Summer is coming so be ready!
Air coolers are very practical to use, whether in summer or not. It’s more energy saving compared to an air conditioner. And the best thing about them is that they are portable. Our list of the best air coolers is there to help you throughout your selection.