Air conditioning (often referred to as aircon, AC or A/C) is the process of altering the properties of air (primarily temperature and humidity) to more favourable conditions. More generally, air conditioning can refer to any form of technological cooling, heating, ventilation, or disinfection that modifies the condition of air.
An air conditioner is a major or home appliance, system, or mechanism designed to change the air temperature and humidity within an area (used for cooling and sometimes heating depending on the air properties at a given time). The cooling is typically done using a simple refrigeration cycle, but sometimes evaporation is used, commonly for comfort cooling in buildings and motor vehicles.Based on type of fixing the AC can be categorised to different models.
For all those using air conditioners, a major component of electricity bill is contributed by the air conditioners, then you need to think of engergy efficient AC . The AC energy efficiency can be measured with stars in the AC and energy saving ratio given for the type of Air conditioners. If you are someone who is worried about high electricity bills due to air conditioners then buying energy efficient air conditioner will be good choice.
Nowadays AC has become the most energy consuming device in most of the houses. Ideal way to deal this situation is to reduce AC usage and electricity less consuming ACs.
It is typical for air conditioners to operate at "efficiencies" of significantly greater than 100%.However, it may be noted that the input electrical energy is of higher thermodynamic quality (lower entropy) than the output thermal energy (heat energy).
Air conditioner equipment power in the U.S. is often described in terms of "tons of refrigeration". A ton of refrigeration is approximately equal to the cooling power of one short ton (2000 pounds or 907 kilograms) of ice melting in a 24-hour period. The value is defined as 12,000 BTU per hour, or 3517 watts.Residential central air systems are usually from 1 to 5 tons (3 to 20 kilowatts (kW)) in capacity.
In an automobile, the A/C system will use around 4 horsepower (3 kW) of the engine's power
.
What is EER?
EER (Energy Efficiency Ratio) is ratio of air conditioner cooling output compared to the power air conditioner consumes. Hence, higher the EER ratio, you’ll have more savings in electricity savings bills.
Calculate Air Conditioner Power (Energy) Consumption?
follow the below steps to calculate power consumption of your air conditioner on basis of Power Input required by it. You can find out this value in technical specifications provided by product manufacturer:
1. 8 hours normal working hours of air conditioner in a day.
Good pratices that redude roon temperature
2.Actual working hours of compressor in “Cut-in & Cut-out” condition is 70%. That means 70% of 8 hours = 5.6 hours/day.
3.Assuming Electricity consumption of a 1.5 Ton 5 Star Rated AC is 1655 watts/hr which means it’ll consume 1.65 Units/hour
4.Actual Units of electricity consumed per day = (5.6 x 1.65) = 9.24 units
5.Assuming electricity rate per unit = Rs. 5
6.Electricity consumed per day in price = (9.24 x 5) = Rs. 46.20
7.Electricity consumed per month = (Rs. 46.20 x 30) = Rs. 1386/-
|
Company
|
Price
|
Model
|
Star Rating
|
EER
|
Cooling Capacity
|
Power Consumption
|
|
(w/w)
|
(Watts)
|
(Units/hour)
|
||||
|
O’General
|
24,000
|
AXGA18ARTH /
AXGB18ARTH / AXZA18ABTH / AXGN18TH
|
N.A.
|
2.4
|
5200
|
2.18
|
|
Hitachi
|
25,140
|
RAW218KSD
|
2
|
2.62
|
5000
|
1.91
|
|
LG
|
24,990
|
LWA5CR1A
|
1
|
2.38
|
4700
|
1.975
|
|
25,990
|
LWA5BR2D
|
2
|
2.6
|
5050
|
1.94
|
|
|
26,990
|
LWA5GR2D
|
2
|
2.6
|
5050
|
1.94
|
|
|
27,990
|
LWA5WR2D
|
2
|
2.58
|
5000
|
1.94
|
|
|
Voltas
|
22,990
|
SILVER 2S –
1.5T
|
2
|
2.55
|
4800
|
1.882
|
|
23,190
|
GOLD 2S
(4011029)
|
2
|
2.55
|
5100
|
2
|
|
|
23,990
|
PLATINUM 2S
(4011030)
|
2
|
2.51
|
5150
|
2.052
|
|
|
Whirlpool
|
22,900
|
WAR18B20DW0 /
WAWR18B20DW0
|
2
|
5190
|
2.02
|
|
|
Carrier
|
GWRAC018DM002 /
GWRAC018DR002 / GWRAC018X1002 / GWRAC018X2002
|
2
|
5125
|
1.95
|
||
|
Onida
|
22,740
|
W18TRC2
|
2
|
2.67
|
5275
|
1.95
|
|
22,740
|
W18SPD2
|
2
|
2.63
|
5275
|
1.975
|
|
|
23,240
|
W18TRD2
|
2
|
2.67
|
5275
|
1.95
|
|
|
Godrej
|
22,990
|
GWC 18 GG 2 WJM
|
2
|
2.52
|
4830
|
1.917
|
|
23,490
|
GWC 19G3 WHH
|
2
|
2.5
|
5100
|
2.04
|
|
|
Lloyd
|
22,990
|
FLW18M2
|
2
|
2.5
|
5272
|
2
|
|
Videocon
|
22,000
|
VW5P2.WE1
|
2
|
2.58
|
5000
|
1.94
|
|
Bluestar
|
23,700
|
2WAE181YA
|
2
|
2.55
|
4765
|
1.87
|
|
Haier
|
19,099
|
HW-18L2V
|
2
|
2.59
|
5050
|
1.95
|
|
19,450
|
HW-18L2H
|
2
|
2.59
|
5050
|
1.95
|
|
|
Hitachi
|
26,940
|
RAW318KSD
|
3
|
2.8
|
5000
|
1.785
|
|
LG
|
27,990
|
LWA5BR3D
|
3
|
2.81
|
5050
|
1.8
|
|
28,990
|
LWA5GR3D
|
3
|
2.81
|
5050
|
1.8
|
|
|
29,990
|
LWA5WR3D
|
3
|
2.81
|
5050
|
1.8
|
|
|
Voltas
|
25,590
|
SILVER 3S
(4011034)
|
3
|
2.71
|
4950
|
1.826
|
|
26,190
|
PLATINUM 3S
(4010970)
|
3
|
2.75
|
5050
|
1.836
|
|
|
Whirlpool
|
23,990
|
WAR18G30RW0
|
3
|
5190
|
1.8
|
|
|
Carrier
|
GWRAC018ER001
|
3
|
5476
|
1.861
|
||
|
Onida
|
24,490
|
W18SPD3
|
3
|
2.81
|
5275
|
1.85
|
|
24,490
|
W18TRC3
|
3
|
2.85
|
5275
|
1.825
|
|
|
Bluestar
|
24,830
|
3WAE181YB
|
3
|
2.73
|
4935
|
1.81
|
|
Haier
|
21,899
|
HW-18L3H
|
3
|
2.78
|
5150
|
1.85
|
|
Hitachi
|
30,900
|
RAV418ESD
|
4
|
3.09
|
5120
|
1.55
|
|
32,640
|
RAV518ESD
|
5
|
3.3
|
5120
|
1.655
|
|
|
34,140
|
RAT518ESD
|
5
|
3.15
|
5200
|
1.625
|
|
|
LG
|
33,990
|
LWA5PR5D
|
5
|
3.11
|
4870
|
1.566
|
|
Voltas
|
30,000
|
PLATINUM 5S
(4011039)
|
5
|
3.11
|
5000
|
1.607
|
|
Godrej
|
28,990
|
GWC 18 GU 4 WLH
|
4
|
2.9
|
5000
|
1.724
|
|
Bluestar
|
31,300
|
4WAE181YA
|
4
|
2.93
|
4950
|
1..69
|
| Company | Price | Model | Tonnage | Star Rating | EER | Cooling Capacity |
| (w/w) | (Watts) | |||||
| O’General | 34,000 | AXGA24APT / AXGA24ANTB | 2 | 2.6 | 6650 – 6800 | |
| Hitachi | 29,690 | RAW222KSD | 2 | 2 | 2.54 | 6160 |
| LG | 33,090 | LWA6BR1D | 2 | 1 | 2.44 | 6350 |
| Voltas | 28,990 | SILVER 2S – 2T (4011036) | 2 | 2 | 2.55 | 5800 |
| 29,090 | GOLD 2S (4011038) | 2 | 2 | 2.55 | 6125 | |
| 29,490 | PLATINUM 2S (4011042) | 2 | 2 | 2.51 | 6000 | |
| Whirlpool | WAWR24G20 | 2 | 2 | 6500 | ||
| Carrier | GWRAC024DM001 / GWRAC024DR001 / GWRAC024X1002 / GWRAC024X2002 | 2 | 1 | 6384 | ||
| Bluestar | 32,000 | 1WAE241YA | 2 | 1 | 2.46 | 6025 |
Good pratices that redude roon temperature
- Close curtains on windows facing the sun
- Install thermal liners on your curtains – they reflect more of the heat back out the window
- Install window tinting on sun facing windows – residential tint film is designed to cut UV rays substantially
- Plant trees and shrubs around your house – their shade will help keep the house cooler
- Paint your house a lighter color – darker colors absorb solar energy, lighter colors reflect it away
- Make sure your attic is properly ventilated, your roof absorbs a lot of heat. Vents in the eaves allows hot air to escape. Consider adding a ridge vent or attic fan.
- Turn off pilot lights on gas furnaces and fire places – you don’t need them during the summer
- Cook outside – It’s summer, enjoy the BBQ as much as possible on hot days
- Install compact florescent bulbs, they produce a lot less heat than incandescent bulbs
- Turn off appliances – even unplug them. Many TV’s, CD players, satellite TV receivers, stereos, cell phone chargers and other electronic devices draw power and give off heat even when turned off.
- Keep your fridge and freezer full – more food in your fridge and freezer means it won’t warm up as fast when the door is open. Also all that thermal mass stays cooler longer and the fridge does not have to work as hard to keep it cool. When the cooling system is running on your fridge it is producing warm air in your home.