Everyone has been hailing the benefits of inverter AC ever since this technology came on the market. Inverter is a device that regulates the power and electric current to the compressor according to the requirement. Now, there has come something better with the advancement in inverter technology. Many brands such as Hitachi, LG and Samsung have brought dual inverter ACs that are becoming more and more popular with every passing day.
If you are thinking about buying an AC, it is important that you weigh all the available options before you make a pick. We have brought you a complete guide with pros and cons of dual inverter ACs and Normal inverter ACs. So, let’s get down to it.
|Normal Inverter AC||Dual Inverter AC||Triple Inverter AC|
|Uses single rotary motor in the compressor||Features two rotary motor in the compressor|
|Cause more vibration and make noise||Less vibration, less noise and higher efficiency||No vibration at all hence no noise|
|Features 4-pole technology||Features 4-pole technology||Features 8-pole technology|
Normal Inverter Air Conditioner
Invention of the inverter has revolutionised the world of air conditioners. Inverter compressor uses a BLDC motor which controls the speed of the compressor according to the requirement.
It works similar to the car accelerator. When the compressor requires more power to cool down the temperature of the room, the inverter provides it with more power. When the desired temperature is reached, the inverter gives less power as the compressor slows down to maintain the temperature in the area.
How an Inverter Works
The compressor keeps running with inverter technology but it slows down and draws power according to the temperature of the incoming air and the desired temperature. The power of the compressor and the speed of the fan are adjusted to give the best performance while significantly saving energy.
Normal Inverter Technology
Today, the normal inverter has a rotary compressor which contains a shaft with multiple blades. This shaft rotates in the enclosed cylinder pushing cooling gas through the cylinder and compressing it at the same time.
Different manufacturers of inverter air conditioner use slight variations in this technology while the main concept of variable-speed compressor remains the same. So, let’s have a look at the other types of inverter compressor you will find in the market today.
Dual or Twin Rotary Inverter Air Conditioners
Dual or twin rotary inverter is a more advanced variant of the normal inverter that uses two rotary compressors instead of one.
They have a more advanced BLDC motor that allows you a much wider range of operating frequencies. Different operating frequencies give you more choice for faster and precise cooling.
The normal inverter air conditioners uses a variable speed single cylinder rotary compressor which works on one rotation and one compression principle. One of the main drawbacks of this design is that it vibrates a lot, hence making a lot of noise due to the shaft whirling.
This problem is solved by the dual rotary compressor design which uses two rotary compressors that work with the phase difference of 180° which gives more stable operation. This improves the rotational balance along with bolstering the compression torque. This allows the compressor to operate with the frequency of 700 RPM to 8000 RPM. This is the reason why dual inverter air conditioners can achieve variable tonnage. For example, an AC of 1.5 tonnage with dual inverter technology can go as low as 0.3 ton and as high as 1.7 ton.
Triple Inverter Air Conditioners
Triple inverter doesn’t mean that it uses three rotary compressors. Triple inverter has an 8-pole motor instead of standard 4 poles. The 4 extra poles reduce the vibration without making too many torque fluctuations which, in turn, makes the whole system a lot more efficient.
This technology was used by Samsung for the first time but, today, many other brands have also included this technology in their AC’s. This technology cools 67% faster than normal air conditioners even in the extremely hot weather. It also saves 69% more energy than the regular air conditioners.
Samsung premium inverter AC was the first air conditioner that used 8-pole triple inverter technology. This AC has been proven to reach the required temperature quicker and with less vibration.
There are some other kinds of inverters that you might want to know about when you are looking around for the best purchase you can get.
Intellisense Inverter Air Conditioner
This inverter is used in the Whirlpool air conditioners. This technology uses a network of smart sensors to adjust to the cooling requirements of the room. These smart sensors can identify the number of people in the room and outdoor temperature and adjust the compressor accordingly for optimum cooling. This technology works best in limiting the use of electricity consumption and significantly saving the energy.
Expendable Inverter Air conditioner
Expendable inverter air conditioners are specially designed for tropical hot and humid climates. This technology is used in the recent models of Hitachi air conditioners. It features Seamless Cascade Vector DC Inverter System that has been proven to be more efficient than the ordinary inverter air conditioners.
Expendable inverter AC increases its capacity if there is a change in either outdoor or indoor temperature. It gives the best performance even in the most extreme climatic conditions by minimizing the time to reach the desired temperature and expanding its cooling capacity. Also, it cuts down the humidity level in the room.
HItachi also utilizes its innovative technology called Dual Flow Expansion Technology to improve the performance of their AC in adverse and moderate climatic conditions. This, along with expendable inverter technology, give optimum peak performance even in the extreme temperatures.
Scroll Inverter Compressor Air Conditioners
This technology is rather new in the market and is only used by Daikin so far. It has two scrolls in the compressor; one is fixed and the other one rotates around the fixed one through the swing link.
In the compression, the rotating scroll pushes the cooling gas towards the center that reduces the volume of the gas. One of the benefits of a scroll inverter is that it has fewer moving parts and less torque variations.