For air conditioners, many people love and hate. Although we can't refuse the comfortable environment that air conditioners bring us, the high electricity bills brought by the air conditioners in summer are very distressing.
At present, most of the air conditioners can be cooled and heated. Is the cooling power consumption high or the heating power consumption high? Let Xiaobian bring everyone to know.
Let us first understand how air conditioners work in cooling and heating.
During cooling, the gaseous refrigerant in the air conditioner will be compressed by the compressor to become a high-temperature and high-pressure gas. After the gas is sent to the condenser and then expanded through the expansion valve, a certain amount of heat will be dissipated, that is, the air conditioner is outside. The hot air blown out.
In this process, because the space of high temperature and high pressure refrigerant becomes larger, the temperature and pressure will drop sharply, and a large amount of heat will be absorbed. The temperature of the evaporator will decrease at this time, which is why the air blown out by the air conditioner is Cold wind.
In fact, from a macro perspective, it is the liquefaction exotherm and vaporization that we have learned in physics textbooks.
During heating, the refrigerant in the air conditioner is still compressed by the compressor, becomes a high-temperature and high-pressure gas, and is sent to the heat exchanger of the air conditioner indoor unit. During this process, the gas will liquefy and release heat, heating the air in the room.
Next, let us explain how the electricity consumed by the air conditioner came from.
For air conditioners, the most power-hungry part is actually the compressor, which actually has the same power during cooling and heating.
However, in terms of efficiency, air conditioners produce air-conditioning at a higher efficiency than heat, so from this point of view, air-conditioning heating consumes more power than refrigeration.
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