Sihai network

Why frequency conversion air conditioning saves electricity compared with constant frequency air con

4hw.com.cn: we all say that variable frequency air conditioning saves electricity compared with fixed frequency air conditioning. When we go to buy air conditioning, the shopping guide will tell us the same. Then how much electricity can be saved and under what circumstances can it be used more effectively.

How much power is saved by frequency conversion air conditioning compared with constant frequency air conditioning

Compared with constant frequency air conditioning, variable frequency air conditioning can save energy between 20% and 30%. But variable frequency air-conditioning is required to work continuously to achieve the role of power saving. So if you only turn on the air conditioner for 2 to 3 hours every day, it is recommended to use the constant frequency air conditioner, so that the short-term use will not save much electricity.

Why frequency conversion air conditioning saves electricity compared with constant frequency air conditioning how to use frequency conversion air conditioning to save electricity

The reason of power saving of variable frequency air conditioning

1. When the AC variable frequency air conditioner is used, the AC variable frequency compressor can adjust the voltage conversion twice. Compared with the constant frequency compressor, the variable frequency air conditioner has no starting capacitance, so the circuit loss is reduced, which can save more power.

2. DC variable frequency air conditioner adopts DC digital variable speed compressor, which only goes through one voltage conversion. Similar to DC motor, it eliminates copper loss in the circuit, so it can save 18-40% electric energy compared with AC variable frequency, which shows the advantages of DC variable frequency technology.

Under what circumstances can inverter air conditioning save power

1. It takes a long time to use the variable frequency air conditioner to save energy.

2. The temperature setting should be reasonable. Only when the temperature setting is appropriate, the inverter can save power.

3. If the temperature is set too high or too low, the frequency converter will not work all the time, so it can not save power.

4. The use time of the air conditioner is too short, and the air conditioner is opened for 12 hours each time, so that the air conditioner inverter can not be involved in the work, so the power saving effect will not be achieved.

5. We also need to remind you that when you buy all the electricity saving appliances, you must calculate the investment ratio.

Specific example of power saving of variable frequency air conditioning

If the air conditioner is used for about three months a year, 30 days a month, and 8 hours a day, the refrigeration operation time is 960 hours, and the average power of the air conditioner is 2000 W, the total power consumption of the constant speed class 5 air conditioner (EER = 2.6) is 1920 degrees. If the current Shanghai standard class 5 variable frequency air conditioner (EER = 3.3) is used, the total power consumption is 1510 degrees, and the power consumption is 410 degrees About, each unit saves only 150 yuan of electricity every year. But at present, the price of variable-frequency air conditioning is much higher than that of ordinary air conditioning. For example, in the north, many areas have heating facilities in winter. The season of using air conditioning is only about three months each year. Most of the time, the air conditioning is idle, so the advantage of variable-frequency air conditioning is not obvious. Compared with constant frequency air conditioning, variable frequency air conditioning can save energy between 20% and 30%. But variable frequency air-conditioning is required to work continuously to achieve the role of power saving. So if you only turn on the air conditioner for 2 to 3 hours every day, it is recommended to use the constant frequency air conditioner, so that the short-term use will not save much electricity.