In the summer, the need to use air-conditioners increases so much that we are 'startled' when we receive electricity bills. In fact, air-conditioning is a rather 'expensive' appliance of electricity. Therefore, you should carefully calculate the daily and monthly electricity consumption of this item.
Understand the power consumption of the air conditioner
Currently, many manufacturers as well as distributors have labeled the power consumption of air conditioner every hour on the product. However, this number is only relative, calculated at the head of the compressor, not including the cooling fan and the device at the maximum capacity. Therefore, the electricity consumption value of the air conditioner may be lower than the actual.
For example, let us consider the most popular case of cooling capacity of 9000 BTU today. Producers claim this air conditioner costs about 0.6 to 0.9 Kwh.
In order to calculate the daily electricity consumption of conditioning, we will have to learn the true nature of its indicators. Currently, nearly all air conditioners are recorded as operating units of BTU. This is a commonly used energy unit in Western countries. Accordingly, 1 kW = 3412.14 BTU / h; 1000 BTU = 0.293 kW and 9000 BTU = 1 HP (1 horsepower).
According to the figures, a 9000 BTU air conditioner will have a cooling capacity of 9000 / 3412.14 = 2,637 kW. However, the power consumption of 1 9000 BTU air conditioner will be calculated in units of horsepower with 1 HP = 0.746 kW. This is the capacity calculated only at the compression head, not including the cooling fan. The actual power consumption of an air conditioner will have to add about 0.2 to 0.25 kW on the cold side. Thus, a 9000 BTU air conditioner will have a power consumption of around 0.9 kWh depending on the type.
Many brands and distributors have listed reference power consumption of air conditioners
It should be stated that this is only the average formula for common air conditioners. Currently, there are many new types of Inveter air conditioners, saving about 20-30% compared to conventional air conditioners. However, in order for this type of air conditioner to save electricity, it is necessary to use the right and the right capacity in accordance with the room.
How much electricity does air conditioning use each month?
To calculate the electricity consumption of the conditioner, we will use the formula:
A = P.t
In which, A is the amount of power consumed, P is the power calculated in kW, t is the time used. From there, we will calculate the average power consumption of each air conditioner. In this article, we will calculate the amount of electricity that the air conditioner consumes for 30 days with 8 hours a day at night (22:00 to 6:00 the next morning). With such a level of use, the electricity level will be calculated according to the current retail price for daily life at VND 4,536 / kWh.
With 1 conditioner 9000 BTU
With the 9000 BTU conditioning, as mentioned, the average power consumption will fall to about 0.9 kWh. Thus, the average power consumption per month of air conditioner 9000 BTU will be:
0.9 x 8 x 30 x 2.536 = VND 547,776
With 1 conditioner 12,000 BTU
With an air conditioner of 12,000 BTU the cooling capacity will be 12000 / 3412.14 = 3.51 kW. Meanwhile, the average electricity consumption of this type of conditioner will be 1.5 HP = 1.19 kW. This figure plus 0.2 – 0.25 kW of capacity at the cold room fan, the average power consumption will be about 1.4 kWh. So, the average monthly electricity bill for air conditioner 9000 BTU will be:
1.4 x 8 x 30 x 2.536 = VND 852,096
With 1 conditioner 18,000 BTU
With an air conditioner of 18,000 BTU, the cooling capacity will be 18,000 / 3412,14 = 5,27 kW. Along with that, the average electricity consumption of this type of conditioner is 2 HP = 1.49 kW. This figure plus 0.2 – 0.25 kW of capacity at the cold room fan, the average power consumption will be about 1.7 kWh. So the average monthly electricity amount of 18,000 BTU will be:
1.7 x 8 x 30 x 2.536 = VND 1,034,688
Why should air conditioner use electricity?
The above figures are only estimates based on average power. In fact, there is no specific figure about the exact power consumption of conditioning because it depends on many factors. The most important factor is based on the type of conditioner you use. In fact, there are many air conditioners that have launched a series of energy-saving products using Inverter sensor technology.
In conventional regulating lines, cooling energy in one of two states: full load and deactivation. When the room has reached the temperature you require, the air conditioner will completely shut down. Some time after the room has warmed up again, the device will start to restart from the beginning. Like that, the air conditioner forms a repetitive cycle and consumes a lot of electricity when it has to be restarted many times.
Meanwhile, Inverter air conditioner lines have gradually increased capacity and slowly until reaching the maximum level. When the room temperature reaches the appropriate level, the machine will reduce the capacity, the speed of the compressor also decreases to maintain the heat level. Thus, the air conditioner will not have to start many times and consume less electricity. Along with that, Inverter air conditioner due to its operation way will keep the room temperature more stable.
Because of this, air conditioner inverter will reduce the amount of electricity that must be used to reduce to 20-30% lower than conventional air conditioners with the right conditions and run for a long enough time.