Analysis of why air conditioning heating and air conditioning refrigeration consume more electricity
4hw.com.cn: in winter, small partners without heating at home will turn on air conditioning. Then the problem comes. Which of air conditioning heating and refrigeration costs electricity? What is the reason? Let's have a look.
Which costs electricity for air conditioning heating and refrigeration
Air conditioning heating costs more electricity. In summer, when the air conditioner cools to 26 degrees and in winter, when the air conditioner heats to 20 degrees, the power consumed by heating is about 30% more than that of refrigeration. The electricity cost of air conditioning heating in winter is higher than that of refrigeration in summer
The reason why the heating ratio of air conditioner is lower than that of refrigeration
1. Large temperature difference between heating and cooling
When the weather is hot in summer, the indoor temperature is about 35 degrees at most. We can feel very comfortable as long as we adjust the air conditioning temperature to about 28 degrees. At this time, the air conditioning only cools the temperature difference of 7 degrees. In winter, the outdoor temperature will be lower than 0 degrees, and the indoor temperature will be 5 degrees at most. When the air conditioner is turned on for heating, we should set the temperature value at least about 20 degrees so as not to feel cold. At this time, the heating temperature difference is as high as 17 & deg;. The problem of heat loss is also considered. In many cases, it will be set at 25 degrees. Compared with the two groups of temperature difference: 7 degrees and 15 degrees, it is obvious that the heat difference required for heating is greater than that of refrigeration, so the power consumption is also relatively high.
2. Electric heating wire auxiliary heating
The heating of air conditioner is 0-DEG; Below, the heating capacity of the air conditioner will decrease, and the ordinary air conditioner will be below minus 5° There is little heating effect. The frequency conversion air conditioner can operate at minus 15 DEG; No matter how low it is, it can't work normally. Therefore, many air conditioners add electric heating assistance to the heating function. Electric heating wires are installed inside the air conditioner. Like heaters, the heating effect will be better if the two methods are used together. In this way, the electric auxiliary heating will consume additional power, making the heating of air conditioning consume more power than refrigeration.
3. Air conditioning defrosting
The air-conditioning host is generally placed outdoors. When the outdoor temperature is lower than 0 ° C in winter, the surface of the external unit of the air-conditioning often frosts, and it is even difficult to start operation. At this time, the air-conditioning host will consume part of the power to defrost. There is no trouble of frosting in summer. When defrosting, it also increases the power consumption of air conditioning heating.
How to save electricity for air conditioning heating
1. Summer and winter. Change the blowing direction of the blade according to different seasons. According to the principle that hot air is lighter than cold air, the air is relatively hot in summer, the air conditioner blows against it, and then the cold air naturally goes down, cooling and saving electricity. In winter, the indoor air is relatively cold, the hot air goes down, and the heating speed is fast.
2. After the air conditioner is turned off, you'd better pull off the plug and plug it in when you turn it on. Because the standby of the air conditioner also needs power support, a certain amount of power will be consumed when the air conditioner is turned off, although the power consumption is small.
3. Do not accumulate sundries at the air outlet. Large furniture is easy to block heat dissipation, and the air outlet design should be reasonable.
4. Select the air conditioner according to the indoor area. The use area of space-time adjustment must be slightly larger than that of indoor rooms. If the air conditioning power is small, the machine will run for a long time, which may affect the service life of the air conditioner and consume more power.
5. It's best to close the doors and windows when turning on the air conditioner. Increase the thermal insulation of the room, so that the cold air outside will not enter, and the hot air inside will not be lost. The room temperature is not easy to drop, but pay attention to regular ventilation.
6. Turn off the air conditioner in advance. You can turn off the air conditioner ten minutes before leaving home, which will not affect the indoor temperature. Generally, the room temperature can be maintained for about 15 minutes.