Air conditioning becomes a standard nowadays. It is hard to imagine that only several years ago there was no air conditioning in buildings such as shopping centers, hospitals, offices, etc. Air Conditioner (AC) is no longer an exclusive part of equipment in large buildings, but it started to be a basic device used even in private apartments or houses.
In many modern applications, where devices are used to provide their specific functions such as air conditioning, another important factor, next to their performance, is saving the energy.
There are many circumstances that may affect the consumption of electricity, when it comes to an Air Conditioner. The list below points out some of the most important ones:
- Size of a room where the AC is to operate, as well as conditions in it (the amount of heat and humidity which should be removed from the room by the AC), the size of room to be cooled can be also increased by opened windows or doors, what in turn increases the costs of air conditioning
- Average temperature in cities of different location – it depends on climate, variable that should be taken into account is the ratio of temperature and humidity (for example, there may be regions which are rather humid but not so hot)
- Colors: dark colors absorb the heat while bright ones help to avoid overheating. All the colors count: not only on your walls, but also furniture or accessories such as curtains, or even clothes
- The number of people inside, what should be also compared to the size of the room. Human body emits heat, the amount of which also depends on some factors what are they doing (sitting are reading books, laughing or playing basketball). The more crowded the room is, the more power will be consumed by the AC to cool it
- Devices that emit heat – if a room is full with working equipment such as laptops, bulbs, lights, TV set, be sure that the heat emitted by these will cause temperature increase
- Solid objects absorb heat – this factor is usually of a greater importance when the air conditioning is applied in a warehouse, factory etc.
An average 1.5 ton AC’s electricity consumption during normal operation is estimated for 1.0kW to 1.9kW, although the final power efficiency depends on the factors listed above.
Energy Efficiency Ratio (EER) may be helpful when trying to assess the electricity consumption of your AC. It is the ratio of the cooling capacity of an AC in BTU (British Thermal Units) per an hour, to the total electrical input (expressed in watts).
And in the end, a sample calculation (with measured Amperes):
1.5 ton AC = 7A running Amperes
Voltage = 200
VA = 200 * 7 = 1.54 VA
W = VA * power factor
W = 1.54 VA * 9 = 1386 watts
In many modern applications, where devices are used to provide their specific functions such as air conditioning, another important factor, next to their performance, is saving the energy.
There are many circumstances that may affect the consumption of electricity, when it comes to an Air Conditioner. The list below points out some of the most important ones:
- Size of a room where the AC is to operate, as well as conditions in it (the amount of heat and humidity which should be removed from the room by the AC), the size of room to be cooled can be also increased by opened windows or doors, what in turn increases the costs of air conditioning
- Average temperature in cities of different location – it depends on climate, variable that should be taken into account is the ratio of temperature and humidity (for example, there may be regions which are rather humid but not so hot)
- Colors: dark colors absorb the heat while bright ones help to avoid overheating. All the colors count: not only on your walls, but also furniture or accessories such as curtains, or even clothes
- The number of people inside, what should be also compared to the size of the room. Human body emits heat, the amount of which also depends on some factors what are they doing (sitting are reading books, laughing or playing basketball). The more crowded the room is, the more power will be consumed by the AC to cool it
- Devices that emit heat – if a room is full with working equipment such as laptops, bulbs, lights, TV set, be sure that the heat emitted by these will cause temperature increase
- Solid objects absorb heat – this factor is usually of a greater importance when the air conditioning is applied in a warehouse, factory etc.
An average 1.5 ton AC’s electricity consumption during normal operation is estimated for 1.0kW to 1.9kW, although the final power efficiency depends on the factors listed above.
Energy Efficiency Ratio (EER) may be helpful when trying to assess the electricity consumption of your AC. It is the ratio of the cooling capacity of an AC in BTU (British Thermal Units) per an hour, to the total electrical input (expressed in watts).
And in the end, a sample calculation (with measured Amperes):
1.5 ton AC = 7A running Amperes
Voltage = 200
VA = 200 * 7 = 1.54 VA
W = VA * power factor
W = 1.54 VA * 9 = 1386 watts
