The presentation discusses the rising popularity of inverter air conditioning technology due to its energy efficiency and environmental benefits, with 'Gree' emerging as a leading brand. Inverter ACs can save up to 50% more electricity compared to non-inverter models, resulting in significant cost savings for users, with a payback period of approximately 3 years. The combination of inverter technology and the energy-efficient R32 refrigerant further enhances energy efficiency and reduces global warming potential.

1. “Presentation On Inverter
Technology”
August 2, 2015
Adil Ashfaque Siddiqui

2. Inverter Air-conditioning
• Rising Sales trend of Inverter Airconditioners has observed in
current year / season due to fulfill the consumer needs i.e.
– Energy savings is one of the most important factors.
– Status quo
• In current year, “Gree” became the most renowned & popular
brand in Inverter Air conditioners.
• 15 ~ 20% sales share of Inverter Airconditioners in the total sale
of Gree AC’S at yet as claimed by the Gree officials.
• The inverter air conditioning is the latest technology in the
HVAC field that is becoming more popular due to its energy
savings and environmental friendly approach. Providing
comfort to the users is another big advantage of this kind of
system.
• So what exactly is this inverter-based air conditioning and how it
is different from the existing technology? Let’s examine that:

3. Technologies for Energy
Conservation
 Inverter Technology
 Energy Efficient Refrigerant

4. Inverter Technology
Technology
Components
Benefits
Savings

5. Inverter Technology : Basic
 Traditionally, the compressor that is used in an air
conditioning system is an ON or OFF type in which it
either works at the maximum capacity or none at all. It
ON when the room thermostat calls for cooling and
OFF when the desired temperature has been achieved.
This cycle is repeated with the change of load in the
room.
 Inverter A/C’s compressor works with variable speed.
In that way compressor only works only at desired
power/speed, which means does not have to run on its
maximum capacity all the time.
 Speed of the compressor can be controlled by
controlling the input frequency of the compressor.
 Variable frequency can be obtained by a INVERTER.

6. Inverter Technology : Basic
 Inverter is an electronic device which converts DC to
AC.
 The advancement in Solid-State Power Electronics has
enabled the inverter technology to thrive by the use of
microcontroller and IGBT modules to drive the
compressor DC or AC motor.

7. Inverter Technology : Basic
An Air Conditioner bearing inverter tag uses a variable frequency
drive to control the speed of the motor and thus the compressor. It
consumes at least 30% less (it can go to 50% or more) electricity
depending on various factors like the outside temperature ,purpose for
which the AC is used, Hence it uses less amount of electricity.
Inverter is a device which supplies variable frequency of power
supply on
equipments.
Thanks to this function , motor revolution speed can be controlled and
it

8. How it works….!
Inverter power control
Non-inverter type air-
conditioner

9. Benefits: Soft Start
Soft Start
• Soft starter is
making electrical
installation work
much simpler.
• At startup, Inverter
raises frequency
smoothly.
• “Eliminating the
starting current
spike”.

10. High-efficiency compressor
motor
The strongest Neodymium magnet is adopted as a permanent in
motor/compressor .
Ferrite magnet Neodymium magnet

11. Inverter: Long Term Benefits
Potential Electricity Savings :
Non inverter Technology Products to Inverter
Technology
 Let’s say a non inverter AC having a rating of 1.5 KW takes 7.0
Amps and an inverter AC having a rating of 2.6 KW (operates
between 0.9~3.0 KW) draws 2.8 Amps.
 For a smooth 8 hours operation per day the non inverter AC
consumes 10 units, while for the same operation an inverter AC
consumes 4 units. If we fix the unit price to an average of Rs.
6/unit, a non-inverter AC contributes Rs. 1,800/- per month,
while for the same period an Inverter AC has a running cost of
Rs.720/- per month giving you flat savings of Rs. 1,080/- per
month.
 If an Inverter AC costs Rs.100,000/- and for the same rating and
cooling a non-inverter AC costs Rs. 65,000/- then payback period for
Inverter ACs is merely 3 years.

12. Inverter with Energy Efficient
Refrigerant

13. Energy Efficient Refrigerant
• R32 is 10% more energy efficient than conventional
refrigerant at the same volume.
•Potential of Refrigeration capacity :1.6 times of
R410A
•Lower pressure loss, when capacity is same, leads to
thinner piping diameter.
•GWP of R32 is 675, which is 1/3 of that of
conventional refrigerants such as R410A and R22.
Also, it can reduce charge volume by about 30%
when optimized. All together it can reduce GWP
by 75% in total.

14. Conclusion
• The potential of reduction of electricity consumption
by air conditioner is high. Inverter and R32 are the
technologies to increase energy efficiency of
equipment.
• Inverter technology can increase energy efficiency by
30% compared to non-inverter.
• R32 is 10% more energy efficient than conventional
refrigerant at the same volume. GWP (Global Warming
Potential) of R32 is 675, which is 1/3 of conventional
ones.
• When inverter & R32 refrigerant are applied to high-
end model, potential increase of energy efficiency will
be significant.