Difference between dehumidification principle of air conditioner and dehumidifier

April and may are the season when rain begins, and the humidity of air is very high. This not only lurks danger for household appliances, but also threatens the health of family. The elderly and children in high humidity environment are more likely to get sick or injured. Therefore, many families will take measures of moisture-proof and dehumidification. The common thing is to open air conditioning and directly buy dehumidifier. So, what is the difference between the dehumidification principle of air conditioning and dehumidifier?

1、 Principle of dehumidification of air conditioning

1. Air conditioning refrigeration dehumidification

During the refrigeration process, the temperature of the wet air will decrease greatly after passing through the evaporator of the air conditioner. The air humidity is in an over saturated state. The excess water vapor will be separated out in the form of condensate, and condensed on the fins of the evaporator, that is, "condensation". When the refrigeration mode reaches a certain equilibrium state, the air humidity will also drop to a certain level. Therefore, when the air conditioning refrigeration process, not only the air temperature reduced, with the air humidity will also be reduced. This is the principle of dehumidification in the air conditioning refrigeration mode. In fact, it is the side effect of the refrigeration process, which reduces the humidity.

2. Air conditioning dehumidification

Now many air conditioners have independent dehumidification function. Its working principle is to heat the air cooled by evaporator to the original temperature, and then send it into the room. That is to say, the indoor fan has been running at low speed, the compressor is on and off, and the refrigeration system is used as a discontinuous refrigeration cycle. Most of the refrigeration generated is used to balance the latent heat of indoor air, that is, water vapor becomes condensate water. A small part is used to balance sensible heat, that is, to reduce some indoor temperature. So, the room temperature is kept near the set value and the moisture in the air is removed in a large amount. This keeps the indoor environment relatively constant with the humidity falling. The refrigeration of air conditioning is only used for condensation, and the temperature control is not very large, so this dehumidification is called constant temperature dehumidification.

Dehumidification temperature setting of air conditioner

1. Automatic setting of dehumidification temperature of air conditioner

At present, most air conditioning dehumidification temperature is set automatically by the manufacturer. In dehumidification mode, the control circuit will check the room temperature first, and then set the target value of operating temperature. The setting value of the manufacturer design is generally that the target value reached by the manufacturer is 2 degrees lower than the room temperature, and the setting effect of too high dehumidification is not obvious, and the low temperature affects the room temperature. In order to avoid excessive reduction of room temperature during dehumidification, this setting will be locked. At this time, we don't have to set the temperature, just turn on the air conditioning dehumidification function.

2. Manual setting of dehumidification temperature of air conditioner

For air conditioning which needs to set dehumidification temperature, there is no special study on this problem in the field. According to the experience of the majority of netizens, it is appropriate to set the temperature at 4 degrees lower than room temperature. For example, if your refrigeration temperature is set at 27 degrees, then the dehumidification temperature is set to 23 degrees.

Precautions for dehumidification with air conditioning

When using dehumidification mode of air conditioner, we should pay attention to that if the outdoor temperature is very high and the air is very dry, do not open dehumidification mode for a long time to avoid damaging the compressor. Generally, when the outdoor temperature is higher than 40 ℃, it is necessary to operate in the normal cooling mode. Only in the evening when the temperature is relatively low and the humidity is relatively high, can the dehumidification mode be opened in time to achieve the effect of adjusting the temperature and humidity of the room.

How much is the dehumidification temperature of air conditioner on. Generally, most of the dehumidification modes of air conditioning are automatic mode now. We don't need to set them ourselves; If you need to set it yourself, it is appropriate to set it at room temperature about 4 degrees. However, if the air conditioning dehumidification mode is used for a long time, it will damage the air conditioning compressor, and it can be used for 1-2 hours at a time.

2、 Working principle of dehumidifier

The general working principle of dehumidifier is to use the moisture in the air to condense and frost when entering the evaporator of dehumidifier, then accumulate and drop it out and discharge it into the lower water inlet, so as to reduce the space humidity. The principle is similar to that of dehumidification in the refrigeration mode of air conditioner. Condense the air into water and discharge it, and balance the air temperature in the room.

3、 Is the principle of dehumidification of air conditioning different from that of dehumidification machine and machine?

From the above, the dehumidification principle of air conditioning is similar to that of general dehumidifier. But why do you still need to buy dehumidifier? Because the dehumidifier is convenient to move and professional dehumidification, it has a good dehumidification effect. Compared with the "side effect" dehumidification function of air conditioner, the fixed position of air conditioner, the dehumidification function with refrigeration can not actually remove the humidity in the room in a short time. Therefore, the dehumidification function of air conditioner is actually limited, To dehumidification and moisture or choose dehumidifier as the best policy.

Moreover, the dehumidifier works by cooling the machine. The water in the air is analyzed, and the temperature of the space will rise slightly, but the temperature difference is not obvious, which is more suitable for wet seasons outside the summer, and the power consumption is relatively low.