How does the AC work? What you need to know before buying an AC?

‌‌How does the AC work? What you need to know before buying an AC?

Many of us think about buying AC during the summer. However, many of us have a misconception that if we buy AC, we will have to pay a lot of money and therefore we do not buy AC. So in today's post, we will know how an AC works and what things we need to know before buying an AC.

What is AC? And how does AC work?

AC is an English abbreviation. Its full form is Air Conditioner. The main mechanism of AC is much like a refrigerator or freezer. Which we discussed in the previous post, you can see by clicking below.

How does a refrigeration works

Generally, the part of an AC that is attached to the wall inside the room is called the evaporator

  

                                Fig : Evaporater 

And, the part that is like a box outside the room is called the condenser

     

                                                   Fig : Condenser 

There are two coils connected to each other between this evaporator and condenser. Through which the refrigerant continuously flows.

The function of an air conditioner is to keep the evaporator inside the room cold, that is, keep it colder than the room temperature and keep the condenser outside hotter than the ambient temperature. When the gaseous refrigerant fluid flows in the room or the coil or evaporator inside the room, it absorbs the heat in the room, as a result, the room temperature gradually decreases and the room becomes colder. Now the refrigerant in the evaporator reaches the condenser with the heat absorbed from the room and releases the heat to the environment. To do this work more quickly, a fan is installed in the condenser. Two more devices are used in it to circulate the refrigerant in the AC. One is the compressor and the other is the expansion valve. With the help of the compressor, the pressure of the refrigerant is increased, which increases the heat and pressure of the refrigerant.

As a result, when this heated refrigerant flows into the condenser coil, the condenser

releases the heat of the refrigerant to the environment.

When the heat of the refrigerant is released outside, the refrigerant turns from gas to liquid again. Now an expansion valve is installed at the end of the condenser. This expansion valve reduces the pressure of the liquid refrigerant. As a result, the heat of the liquid refrigerant decreases and it turns into gas again. Now this cold refrigerant reaches the evaporator again. This cycle continues, this cycle is called the refrigeration cycle. And this is how an AC or Air Conditioner works.

What factors should be considered when buying an AC?

Before buying an AC, you need to keep various factors in mind. For example: type of AC, technology of AC, room size, rating of AC, etc. Below is a detailed description of each factor:

Type of AC

There are various types of AC available in the market. For example: Window AC, Portable AC, Split AC. Each of these ACs has different features. For example:

Window AC

                            Fig : Window AC

Just by hearing the name, it is understood that it has something to do with windows. Yes, you are right. Window AC is basically attached to the window. Half of this AC is inside the house and the other half is outside the house. However, one problem with this is that the window in which it is installed will be completely closed.

Portable AC

                            Fig : Portable AC

You can easily carry this type of AC anywhere you want, that is, you can easily bring it from one room of the house to another. It looks a lot like a suitcase and has 4 wheels attached to it for ease of movement. However, one problem with this AC is that it makes a lot of noise when it is on and if your room is large, this AC will not be very effective.

Split AC

                                  Fig : Split AC

Currently, the most popular and most common AC is this split AC. Compared to other ACs, this type of AC does not have much trouble after installation.

So you can get the split AC among the above three types of ACs without any trouble.

AC Technology

Usually, split ACs are available in two technologies. Namely:

1. Inverter

2. Non-inverter

Inverter technology ACs control the temperature of your room by increasing or decreasing the rotation speed of the compressor in the AC, thereby saving electricity.

On the other hand, in non-inverter ACs, the compressor always rotates at a certain speed, so it costs more electricity than inverter ACs. But the price of inverter ACs is a little higher than non-inverter ACs, but since it is energy-efficient, it can be easily recovered after a few years of use.

Room size

It is not that just by installing inverter technology ACs, there will be no more questions about your AC. Rather, it depends on the size of your room and how many tons of AC you will install. The possible chart of how many tons of AC are required for how many square feet of room is given below:

Now, according to the above chart, it is not so much that so many tons of AC are required for so many square feet.

That is, the chart shows that 1 ton of AC is required for a 100-150 square feet room. So it is not said that exactly 1 ton of AC is required because how many members are there in your room or if the location of your room is such that the sunlight always falls, then more than 1 ton of AC may be required.

So when you go to buy an AC, tell an AC expert about the size of your room, i.e. how much is the length and width of the room, the location of the room and how many members are there in the room, etc. He will determine how many tons of AC is required for your room.

AC Rating

When buying an AC, it is definitely necessary to know about the AC rating. Generally, ACs are available in the market from 1 to 5 stars. Now the question is what is the difference between a 1 star AC and a 5 star AC?

Let's say there is a 3 star AC and a 5 star AC. Where a 3 star AC can cool a room in a relatively shorter time than a 5 star AC and 5 star AC has upgraded inverter technology compared to a 3 star AC, so electricity is also saved. However, the price of a 5 star AC is relatively higher compared to a 3 star AC.

So if you always need to use AC, you can buy a relatively higher star or a 5 star AC.

So you should definitely buy AC by considering the above points.