How does an Evaporative Air cooler works?.

Evaporative air cooling air cooling methods were found a long year before the invention of mechanical cooling and traditional architecture in hot and dry climates. Evaporative coolers are work by adding water vapor to hot air to evaporation, removes sensible heat from the air resulting in an effective lower temperature.

The physics applied behind Evaporative Air Cooler. An air cooler is a heat converter known as the name of evaporative air coolers because of its basic component and its functioning methods. If you would like to know how does an evaporative air cooler work than first come to know the physics that work behind it and then the working method of air cooler. Many peoples are using air cooler now in days but they have no idea about how does an air cooler is work.

The easiest method of physic (The Third Law of Thermodynamics. ) are applied behind working of an evaporative air cooler, as when the air blows and pass through the water there are some particles of air on the surface of the water carries them away those particles have kept some heat with them during the entire process, and continuation of this process gradually the air becomes cool. Utilization of water from its water reservoir sprayed over the soaking pad start evaporate with its required heat of air from the atmosphere keep help to air become cool. When a certain measure of (called 'latent heat of evaporation') hot air entered into the certain unit of an air cooler from the environment with the help of a powerful fan and blow through the water pad, the water starts converts into vapor and throw out fresh cool air inside. 

Working Criteria of  Air Cooler.

Air cooler usually works better performance in high temperature and lower humidity atmosphere. If you are deciding to use an air cooler you must be aware of the temperature of your region.

working principle of evaporating .

An air cooler is working through the principle of evaporating the water. It lowers the temperature of around 20%. You can take an example of your self when your body becomes secretes sweat on a hot day or some else, your body becomes cool while blow air, it is nothing but simply vaporing of water(i.e sweat)and release the heat. Evaporative air cooling is a simple process as like a breeze near a waterfall.

An air cooler can define as a heat rejecter. It rejects heat from the outer hot air and decreases heat up to 20%. the evaporative cooling system is most effective when the humidity is low. The evaporative cooling system raises the internal humidity level significantly. The cost of installation and operation of an evaporative cooler is comparatively much lower than refrigerative air conditioning. Various hot and dry regions could be potentially benefited from the evaporative cooling system. The evaporative cooling system is used to lower the temperature and increase the humidity of air with the help of "latent heat of evaporation", changing the liquid form of water into gas. Through this process, hot dry air is changed to cool moist air. The heat of the atmospherical air is used to convert its form. An evaporative cooling unit uses a fan to blow air through a soaked water pad, provides a surface area for evaporation of water into the air. Water is sprayed over the pad and so it can drip into the membrane constantly keeping wet. Excess of water that drips out through the bottom of the membrane to recirculate. Now I hope you have got a little concept about how the evaporative air cooler is work. I believe you will get more detail following this article completely. For your better understanding, how does an evaporative air cooler is work please look at the picture below.

See More:- How to choose the best air cooler for your home?

Types of Evaporative cooler.

There are many types of evaporative-cooling options available, including direct, indirect, two-stage evaporative coolers; condenser air pre-coolers. Two broad types of evaporative coolers available on the market, one is direct and another is indirect.

A)Direct evaporative cooler:- In a direct evaporative cooler the air is passing through the pad, it is the simplest and most popular evaporative cooling system. It takes the heat energy from the environment to convert the form of water or (any liquid) into a vapor. In certain climate areas, the direct evaporative cooling system is an economical alternative. The direct evaporative cooling system is a simple process, work with a few basic components. As you know a strong fan pulls hot air from the outside and passes it through a moist pad, allowed to resulting as cool and fresh air to the inside. The direct evaporative cooling system works efficiently in hot, and dry climate areas where it can add humidity easily to air while it cooling.

Direct evaporative cooler working principle.

B) Indirect evaporative cooler:- An indirect evaporative cooling system is capable to produce the air cool without changing its moisture. The indirect evaporative cooling system also works following the same principle as a direct evaporative cooling system. It also lowers the air temperature with the use of water to evaporate. But the basic difference of an indirect evaporative cooling system is that there is a heat exchanger is used to cool the air. There is no direct contact with the air and water. The heat exchanger prevents water on the hot side to make direct contact with the air. Indirect evaporative Cooling has cooled air by losing its heat. During the process there are two-stage of working simultaneously –one is the primary stage and another is the secondary stage i.e (dry bulb and wet bulb).

Indirect evaporative cooler working principle.

C)Two-stage evaporative coolers( indirect/direct):- Two-stage evaporative cooling system represents the most advanced cooling system – following evaporative cooling technology. This cooling method is more energy-efficient as compared to the cooling with refrigerant air conditioning systems. Two-stage coolers are used as an unyielding pad and have an indirect evaporative pre-cooling system. The two-stage cooling process is similar to the refrigeration-based air conditioning system where the heat is transferred from the primary air to a secondary air stream. The primary air entered into the house, while the secondary air is refused to the outside.

D)condenser air pre-coolers:- An evaporative fogging system is used to lowers the temperature of the air entering the condenser. This system allows the condenser to reject heat which lowers the pressures and compression ratios, resulting compressor to draw less power and consume less energy, less maintenance, and long life.

Types of Air Coolers.

Basically, there are two types of air coolers available in the market. One is a personal air cooler and another is Desert air cooler.
personal air cooler. Desert air cooler.

A short concept on Cooling Pad.




Types of cooling Pads used in Air coolers.

There are two types of cooling pads are used in the air coolers, one is called"Honeycomb cooling pad" and another is called " Aspen wood wool cooling pad".

What comes to your mind when you hear of DIET? It automatically creates a lean, maintained perception of some sorts in your head. This is what DIET range from Symphony brings to you. Diet 35T is a very productive air cooler and is ideal for room size up to

50 m3. With a water occupying capacity of 35 liters, slim and efficient Diet 35T air cooler is suitable for advantageous cooling of spaces in your environment. Powered by a 35-liter tank, a high-efficiency honeycomb pad and ice chamber, this is your coolest buddy who stands by you, all through the heat. Its multi-directional wheels undoubtedly make it your go-to cooler for any space. Diet 35T is absolutely lavish when giving you the coolest breeze you crave for!

Aart Deluxe Tower Fans For Office Cooler.

Product description.

Aart’s Tower Fan has a powerful air throw that covers a good distance and helps inflowing air in every corner of the room. Your summer fills with chilled and cool with our Deluxe Tower Fan, a performer of international standards when it comes to cooling. Ideal for the bedroom, living room, and office, these Coolers are stylish and designed for comfort. Made thoughtfully for Indian homes and designed aesthetically to fit into any modern ambiance it also features a rust-proof body made of high-quality metal and plastic parts. Even with a power supported by a high performing motor with a high air delivery capacity, this smart machine is stunningly silent while it is in action.

• Sleek & Stylish Modular Design. Power 140w | current: 1 Amp| High Glossy Rust-free Body
• High Air Delivery: 2250M3/HR. 3 Speed Control | Height: 74cm | Length: 23cm | Width: 28cm
• Powerful Air Throw: 25 Feet | Extra Chilling with Air Conditioner
• Low Power Consumption | Voltage: 220~240v, 50/60Hz Ac
• Ideal for Bedroom, living room and office.

AISEN® Prima Air Cooler for Home Office.

Product Description.

Aisen coolers work on evaporative air technology which is the most natural way of cooling. Warm air is drawn inside the cooler through cooling pads on which water is continuously dripped evenly. The water drops take the heat of the air and evaporate thereby cooling the air inside the cooler. Cool air is then blown out of the cooler by powerful blower or fan to give cool air comfort.

No gaseous refrigerants are used in Aisen air coolers and with low power consumption, it is the healthiest and energy-efficient way of getting cool air. Unlike, air conditioner which circulates trapped air inside the room, Aisen air coolers keep drawing fresh air through open windows and doors and gives a continuous flow of cool and fresh air.

Bajaj Platini PX97 Torque 36 Ltrs Room Air Cooler (White).

Product details.

• Product Dimensions: 45.5 x 43.5 x 82 cm ; 11 Kg.
• Bajaj Electricals offer air coolers that are suitable for different climates and geographical locations. Equipped with features like high air delivery and big water tank, the air coolers offer sustained and effective cooling. Moreover, most Bajaj air coolers feature modern technology for an efficient cooling experience. All air coolers come with castor wheels, providing ease of movement.