Article lead: Air conditioners are used frequently in summer, and many friends report that the electricity bills at home in summer are quite high, so most of my friends think that these electricity bills are generated by air conditioners. In this article, the home furnishing world wants to use the 1.5-hp fixed frequency air conditioner commonly used in homes as an example to introduce to you the relationship between the energy efficiency ratio of the air conditioner and the power consumption of the air conditioner, which can also let us all Be clear about the meaning of each logo on the nameplate of the air conditioner.
What is the first explanation for the 1.5 HP air conditioner?
1.5-hp air-conditioning is generally explained as cooling capacity.
This mainly means that when we buy an air conditioner, the air conditioner salesperson will tell us the horse count of an air conditioner. For example, we want to buy an air conditioner for a bedroom. At this time, the sales staff will introduce you a 1 HP air conditioner or a 1.5 HP air conditioner. The horse here refers to the cooling capacity of the air conditioner.
In layman's terms, the cooling capacity of one horse is about 2000 kcal. If the conversion is successful in the international standard unit watt, it needs to be multiplied by a factor of 1.162, then the cooling capacity of an air conditioner should be 2000 kcal×1.162=2324 watts. Therefore, if our house has a 1.5-hp air conditioner, it actually uses 1.5-hp×2000 kcal×1.162≈3486 watts. Of course, you can also directly multiply the cooling capacity of 1 horse by 1.5 to get the same result.
The air conditioner generates heat when heating, which is the so-called heating capacity.
The heating capacity of the air conditioner is generally 10% to 15% more than the cooling capacity of the air conditioner.That is to say, the cooling capacity of 1 HP air conditioner is 2324 watts, so the heating capacity of this 1 HP air conditioner is about 2500 watts. So we can find the heating capacity of 1.5 hp air conditioner, which is about 3800 watts.
What is the second explanation for the 1.5-hp air conditioner?
The second explanation of the 1.5-hp air conditioner mentioned here, in fact, everyone can think of, it mainly refers to the input power of the air conditioner. The power of the air conditioner should be divided into output power and output power. The so-called input power here is actually how much electricity we should consume. The input power is actually a decisive factor for the level of power consumption.
Generally speaking, the input power of the air conditioner is how many horses, in fact, it also represents the power consumption of this air conditioner. Of course, this is related to many factors. This includes the actual working conditions of the motor, as well as the indoor and outdoor environmental conditions. Popularly speaking, a 1.5-hp air conditioner, the horse here is a unit of power, and one horse is roughly equivalent to about 735 watts. Normally, it is calculated based on 750 watts. Therefore, the power of a 1.5-hp air conditioner is 1.5 times 750 watts, which is roughly equal to 1100 watts. In addition, if we add in the losses of all electrical components and the power of the electric fan, it can be calculated as 1200 watts.
The other power of the air conditioner is the output power of the air conditioner. In fact, the output power is also very difficult to calculate. During the operation of the air conditioner, because the output power changes with the new working conditions, that is to say, it is related to the speed and slowness of indoor heat loss, the working conditions of the compressor, the temperature difference between indoor and outdoor, and many other factors. . There is also a very important influential factor, which is the energy efficiency ratio of air conditioners to be discussed below.
What is the energy efficiency ratio of air conditioners?
First, let's look at the so-called energy efficiency ratio in energy. In fact, the energy efficiency ratio is a ratio of the energy conversion efficiency consumed.
For example, the power of the work that can be converted by consuming 1000 watts of energy is 5000 watts, which is the value of the energy efficiency ratio is 5. Of course this is just an analogy. The greater the value of the energy efficiency ratio, the higher the efficiency and the more power saving.
Next, let’s look at the energy efficiency ratio of air conditioners. In fact, everyone should know that it refers to the ratio of the rated cooling capacity to the rated input power.
The power here actually refers to the power consumption, which can also be understood as the ratio of the theoretical power consumption to the cooling capacity. In fact, to put it plainly, it is the ratio between output and input, which is the energy efficiency ratio of air conditioners. The energy efficiency ratio of air conditioners should be divided into two types according to cooling and heating. But what we usually call the energy efficiency ratio of air conditioners refers to the ratio of nominal cooling capacity or heat to operating power, which is EER and COP. However, our popular energy efficiency ratio is the EER inside.
How to calculate the energy efficiency ratio of air conditioning?
The energy efficiency ratio of the air conditioner is calculated by dividing the cooling capacity used by the cooling power.
Therefore, we must distinguish between cooling capacity and cooling power. The cooling capacity is actually the cooling load we consume indoors, and the cooling power refers to the energy input that is needed when the air conditioner is cooled, that is, the power consumption.
For example, here we have three fixed-frequency air conditioners that are also 2 HP, and their cooling capacity is generally marked on the nameplate of the air conditioner.
Of course their input power, that is, the input power under rated conditions, is also marked on the nameplate. At this point, we can calculate the energy efficiency ratios of three different air conditioners with the same horsepower.
Three different 1.5 hp fixed frequency air-conditioning energy efficiency calculation examples:
For example, the first air conditioner, the second air conditioner and the third air conditioner have a cooling capacity of 4000 watts. ; The input power of the first air conditioner is 1100 watts, the input power of the second air conditioner is 1200 watts, and the input power of the third air conditioner is 1300 watts; then the energy efficiency ratios of the three air conditioners are calculated as follows: 4000÷ 1100=3.62; 4000÷1200=3.33; 4000÷1300=3.08. The energy efficiency ratios of the three two-hp air conditioners are 3.62, 3.33, and 3.08 in order.
How to classify the energy efficiency ratio of air conditioners?
The earliest energy efficiency rating for air conditioners in my country was the first edition published in 2004.At that time, divided the energy efficiency levels of air conditioners into five levels. The first level is the most energy-efficient, the fifth level is the worst, and the energy efficiency lower than the fifth level is the unqualified product, and it is not allowed to go on sale.
Probably on June 1, 2013, the fixed speed air conditioner was re-issued, which is the new standard for the energy efficiency ratio of fixed frequency air conditioners. divides the energy efficiency ratio of fixed-frequency air conditioners into three levels this time, namely, level 1, level 2, and level 3. The first-level energy efficiency ratio is the most, and the third-level energy efficiency is the worst. Therefore, everyone must pay attention to the higher the energy efficiency ratio of the air conditioner, the worse the energy efficiency ratio, which means that the first-level energy efficiency is the best, and the third-level energy efficiency is the worst. But the larger the value of the energy efficiency ratio, it corresponds to the level of the energy efficiency ratio, that is, the value of the first-level energy efficiency is the largest.
Pay attention to the energy efficiency ratio of the new version of the air conditioner. The specific value is as follows: The first level of the split air conditioner is the first level energy efficiency ratio, which represents the energy efficiency ratio between 3.4 and 3.6; the second level energy efficiency ratio represents The ratio of is between 3.2 and 3.4; the value represented by the three-level energy efficiency ratio is between 3 and 3.2. According to the data of integral air conditioners, the value of the first-level energy efficiency ratio is 3.3, the value of the second-level energy efficiency ratio is 3.1, and the value of the third-level energy efficiency ratio is 2.9.
What are the influencing factors of air conditioning power consumption?
The decisive factor that affects the power consumption of the air conditioner is the input power of the air conditioner. For example, if 1000 watts of power is input, then its power consumption is 1000 watts of electricity, which is 1 kilowatt-hour of electricity. Therefore, if we want to control the power consumption of the air conditioner, we actually control the input power of the air conditioner to the greatest extent.
The influencing factor that affects the power consumption of the air conditioner is indeed the output power of the air conditioner. Because under the same input power,If the output power is greater, of course the power it consumes is smaller. This is actually the energy efficiency ratio we just mentioned, but this is only one of the factors that affects the power consumption of the air conditioner.
Another factor that affects the power consumption of the air conditioner is the amount of cooling and heating load it actually outputs, that is, the amount of heat generated by the cooling capacity. There are many influencing factors here. If summarized, it is actually the indoor cooling and heating load. The indoor heat and cold load is also related to the heat transfer coefficient of our enclosure structure. The lower the heat transfer coefficient of the maintenance mechanism, the less heat is lost. In addition, there is another key factor based on the calculation of the cooling and heating load, that is the temperature difference between indoor and outdoor, and then the heat transfer coefficient of the maintenance structure, which determines how much energy we need.
What is the relationship between the energy efficiency ratio of air conditioners and power consumption?
I have analyzed the air conditioner with the same input power above, and its energy efficiency ratio has a great influence on the power consumption of the air conditioner. For example, the minimum value of the first-level energy efficiency ratio mentioned above is 3.6, and the minimum value of the third-level energy efficiency ratio is 2.9. may directly tell you these two comparable numbers, but you don't understand it because it is relatively abstract, so I will give you an example below to illustrate it.
Let's also take three 1.5-hp fixed-frequency air conditioners as an example:
For example, the input power of the first 1.5-hp fixed-frequency air conditioner is 1200 watts, and the energy efficiency ratio of this air conditioner is 3.6. Then the value of the cooling capacity that can be produced when 1.2 kWh of electricity is input at this time is about 1200 watts × 3.6, and the result is about 4320 watts. In addition, the same 1.5 hp fixed frequency air conditioner has an input power of 1200 watts.Its energy efficiency ratio is 2.9, so the cooling capacity that this air conditioner can output is 1200 watts × 2.9, and the result is about 34.8 million. It can be seen that the two air conditioners also input 1.2 kilowatt-hours of electricity, resulting in a cooling load difference of nearly 1/3.
So, if the same two air conditioners of the same model are used in the same room, the difference in power consumption between them is actually very large.
One first-class energy-efficient air conditioner and one third-class energy-efficiency air conditioner. If they are turned on for eight hours every night, the difference between the two air conditioners is about 2 kWh or 3 kWh. The monthly electricity bill is also a lot.
Concluding remarks
Through a brief introduction to the air conditioner, we have analyzed some of the factors that affect the power consumption of the air conditioner. The focus is on the energy efficiency of the air conditioner. The impact of air conditioning power consumption. So that when we buy air conditioners, we can understand the energy efficiency ratio mentioned by the sales staff of the business. I hope this article of mine can be helpful for everyone! If you have different opinions or suggestions, you are welcome to share them! All the above content is the original creation of the home furnishing industry, first published in the headlines, I hope you don’t hesitate to enlighten me, thank you very much!
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