Feedback and Control Systems Technology

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Discussion about FCS Technology that is available in the market

I. Inverter Air Conditioner
II. What is it for?

2.1 What is Air Conditioner

An air conditioner is a system that is used to cool down a space by removing heat from the space and moving it to some outside area. The cool air can then be moved throughout a building through ventilation.

2.2 What is an Inverter AC?

An inverter is energy saving technology eliminates wasted operation in air conditioners by efficiently controlling motor speed.

Air conditioners maintain set temperature by cooling when room temperature rises above the set temperature and heating when the room temperature falls below the set temperature. In inverter type air conditioners, temperature is adjusted by changing motor speed without turning the motor ON and OFF.

Inverter AC


III. Simple Block diagram and flowchart of the Inverter Air Conditioner

Figure 3.1: Block Diagram of how Inverter AC works


Figure 3.2: Flowchart of how Inverter AC works


IV. Why an Inverter AC is an FCS technology?

Well, most of the major AC brands use a combination of sensors and sensor technology to ensure intelligent cooling. Feedback Control System principles applies in an Inverter Air Conditioner just by looking at the Figure 3.2 Flowchart of Inverter AC it has a sensor that monitors the temperature of the inverter then act upon it, it demonstrates how it compensate for unexpected environmental changes acting on the system and maintain the desired room temperature. Most models these days are equipped with intelligent image sensor technology to minimize cooling waste while providing even cooling comfort for indoor users. In Hitachi`s style, even the new Daikin ACS is equipped with an intelligent people sensor that detects the presence (and number) of people in order to optimize room cooling.



V. Advantages and Disadvantages of Inverter Air Conditioner

Advantages of Inverter Air Conditioner

The inverter AC has many benefits. But the most obvious reasons for its popularity are;

  • Energy Efficient Operations – In the absence of the compressor constantly turning on and off, there is no power surge or fluctuations. Therefore, inverter air conditioners reduce power consumption by almost 40% annually. They allow maintenance of comfortable temperature even with less energy consumption. Even better is the fact that since it consumes less power, it is incredibly safe for home wiring.
  • Cost-Effective – Since the power consumption in the running of inverter AC is low, the bills are also on the lower side. Its energy efficient operations translate to its cost-effectiveness and make your pockets happy.
  • Rapid Cooling – Inverter AC is capable of running the compressor at high speed. As a result, it can cool a room faster. The compressor of a conventional AC runs at a fixed speed only, and hence, it takes more time to cool a room.
  • Silent Operation – Compared to a traditional AC, the inverter air conditioner runs at low speed. The compressor is also comparatively silent. Therefore, it produces little to no noise inside the home. Its silent operations allow you a sound and comfortable sleep.
  • Other Benefits – Lesser known, but equally important, benefits of inverter AC include its capability to run on solar panels, environment-friendly nature because of the use of good quality refrigerants and the fact that its high price is offset with the massive saving in electricity bills.

Disadvantages of Inverter Air Conditioner

Everything is not rosy when it comes to inverter ACs.The key disadvantages of inverter AC include;

  • Bad Insulation Increases Costs – Inverter AC is energy efficient only when the room is properly insulated. In case the insulation in the room is not up to the notch, the power consumption will be high, and as such, your electricity bill will also increase proportionately.
  • Expensive Repair & Maintenance – The components that make an inverter AC are expensive. Therefore, its repair and maintenance are a costly service. You need to think about the cost involved in case of any issues, whether your pocket can afford it or not, before making the purchase decision.
  • Increase Humidity – If the inverter AC is too powerful for your room, it will run frequent short cycles to maintain the desired room temperature. This will result in the room getting either too hot or too cold rapidly, but without effectively dehumidifying the air. What happens in such cases is that the room achieves the targeted temperature and yet maintains high humidity due to which it does not feel comfortable.
  • Costly Purchase – Inverter AC is a new concept. The technology involved is also relatively new. The demand for these air conditioners is still not high in the market. To top it all, it is priced high because of its expensive components. Inverter AC is not a pocket-friendly solution for families who budget their expenses.


VI. Conclusion

Inverter AC’s can reach the desired temperature swiftly and effectively by starting at full throttle. Once the ideal temperature is reached, the process is repetitively adjusted to retain a comfortable climate without any fluctuations. To continuously control the temperature, an inverter is used to regulate the speed of the compressor motor.

In this hot generation wherein global warming is intolerable, we tend to like purchasing air conditioners especially if we can afford it but still want to consider the possible expenses. Inverter AC is more expensive than the normal AC’s however if you think in terms of long-term investment Inverter AC is more cost efficient in a long run since it’s energy efficient.




VII. References








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