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Air conditioning knowledge

Is there any difference between fixed frequency air conditioner and variable frequency air conditioner? Does inverter air conditioner save electricity than fixed frequency air conditioning?
2020-05-14 13:53:23

If you buy air-conditioning, you will be asked whether you want to buy FM air conditioning or buy FM air conditioning. Of course, most people say that the frequency adjustment is relatively good, where exactly is good and how to do it well? Only buy air conditioning can choose frequency converter? I believe a lot of friends are also confused. Is there any difference between fixed frequency air conditioner and variable frequency air conditioner? Will the inverter air conditioner be more economical than the constant frequency air conditioner?

 Is there any difference between frequency air-conditioner and inverter air conditioner?

1. What is a constant frequency air conditioner?

The principle of air conditioning refrigeration is that after the air conditioner is electrified, the low pressure steam of the refrigerant in the refrigeration system is sucked by the compressor, compressed by high pressure steam to the condenser, and the indoor air circulates to achieve the purpose of lowering the temperature. Compressor is the heart of the air conditioning system.

The fixed frequency air conditioner works according to the temperature set by us. When the indoor temperature reaches the set temperature, the air conditioner stops working and the air conditioner starts working at constant frequency after the indoor temperature is restored. Because the frequency of the inverter air conditioner does not change, the compressor speed of the inverter air conditioner in the past is almost unchanged. Constantly adjusting the indoor temperature with the "open and close" compressor, turn the compressor on when the ambient temperature is higher than the set temperature, turn on the refrigeration, and turn off the compressor at the temperature below the set temperature, so that the ambient temperature can be kept at the set temperature.

Two, what is inverter air conditioner?

The frequency conversion air conditioner adopts the special frequency conversion compressor in the ordinary air conditioner, and adds the frequency conversion control system. The variable frequency air conditioner automatically carries out continuously variable transmission. When the indoor temperature reaches the desired temperature automatically according to the condition of the room, the air conditioning main unit can operate at a certain speed that can maintain the temperature correctly, achieving the "uninterrupted operation" and ensuring the stability of the environment temperature. The inverter air conditioner adds frequency converters to the usual air-conditioning structure.

In the past, the speed of the compressor of the inverter air conditioner has hardly changed. The constant temperature of the compressor is adjusted by using the "open and close" compressor. Variable frequency control technology can automatically select heating, refrigeration and dehumidification operation modes according to the ambient temperature, so that the room can reach the necessary temperature quickly in a short time. Under the condition of low rotation and low power consumption, a small temperature difference is changed to achieve a fast, energy saving and comfortable temperature control effect.

Three, will the inverter air conditioner be more economical than the constant frequency air conditioner?

Variable frequency air conditioning does have energy efficiency, but it is necessary to objectively judge whether it will save electricity in the actual use. Suppose the purchase of a variable frequency air conditioner, according to the annual use time of 4 months, 30 days a month, the average running 8 hours per day, the refrigeration operation time is 960 hours, according to the air conditioning power 2000W calculation, during the refrigeration period, the use of fixed speed 5 level air conditioning (EER=2.6) total consumption of 1920 degrees, if the use of the current standard 5 grade variable frequency air conditioning (EER=3.3), the total consumption of 1510 degrees, power saving 410 Save electricity less than three hundred yuan.

According to the different habits of different families using air conditioning, the air conditioning time is different every day. When the indoor and outdoor temperature difference is large, it is open. Inverter air conditioner It will operate at a higher power and higher frequency and adjust the consumption of refrigeration for a short time. However, after a long period of operation, the room will enter the constant temperature state, and the frequency conversion air conditioner will save electricity compared with the same number of fixed frequency air-conditioners. When choosing central air conditioning, you can judge the type of selection according to the specific family habits.

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