1. The principle of air conditioning dehumidification. The air conditioner has two modes of dehumidification function

       ①The cooling mode is the mode of any air conditioner, and it is also the most basic function of the air conditioner. The air-conditioning refrigeration process must be accompanied by dehumidification. After the humid air passes through the air conditioner evaporator, the temperature will drop significantly. The air humidity is supersaturated. The excess water condenses on the evaporator to form condensed water. When the cooling mode reaches a certain equilibrium state, the air humidity will drop to a certain level.

       ②The independent dehumidification method is called constant temperature dehumidification. The basic principle is to heat the air cooled by the evaporator to its original temperature and then send it into the room to keep the indoor environment relatively constant when the humidity drops. There are also two ways to heat the outlet temperature: one is to heat the air with an electric heating element after passing through the evaporator. This type of air conditioner is equipped with an electric heating device in the indoor unit. When the air is condensed from the evaporator (the surface is low), the electric heating device heats the cooled air so that the temperature of the air outlet and the air inlet are basically the same; the other is to use the heat generated by the condenser to dehumidify the air The air is heated.

       This type of air conditioner has two heat exchangers, a and B, which are switched to the evaporator and condenser in an independent dehumidification mode. Similarly, the condensed water is separated from the air by the evaporator a (low surface temperature), and then condenser B (high surface temperature) is used to replace the role of the electric heating component in mode 1, and the temperature of the air outlet and the air inlet of the air conditioner is basically the same. These two heating methods are only different from the heating device and the heating method, the latter is purely physical.

2. Working principle of dehumidifier

       The working principle of the dehumidifier is to use the moisture in the air to condense and frost when it enters the evaporator of the dehumidifier, and then accumulate, drip out and discharge to the water outlet to achieve the purpose of reducing the humidity in the space. The principle of dehumidification is similar to that of an air conditioner in cooling mode.

3. The difference between air conditioner and dehumidifier

       Compared with the independent dehumidification method, as the basic function of the air conditioner, the refrigeration method has lower requirements for the structural design and control method of the air conditioner, and the cost is lower. However, when this method is used to achieve the purpose of dehumidification, the room temperature will inevitably drop, which is unrealistic and will waste electricity when the temperature is not high. The working method of the dehumidifier is to reduce the temperature inside the machine and analyze the moisture in the air. The space temperature will rise slightly, but the temperature difference is not obvious. It is more suitable for wet seasons than midsummer, and its power consumption is relatively low.

4. Which dehumidifier or air conditioner has better dehumidification effect?

       In fact, the main function of air conditioning is cooling and heating. The air conditioner with independent dehumidification function can dehumidify, but the dehumidification capacity is small and the dehumidification speed is slow. Moreover, in the rainy season in southern China, the temperature is not high. If you use an air conditioner to dehumidify, cold air will be blown out, and the more dehumidification, the lower the temperature, which makes people feel quite uncomfortable. Due to the relatively fixed position of the air conditioner, it is suitable for local small area dehumidification. At the same time, the long-term dehumidification operation of the air conditioner will increase the load of the compressor, consume a lot of power, easily damage the compressor, and shorten the service life of the whole machine.

        Therefore, for southern regions, air conditioners cannot replace dehumidifiers. However, for northern regions, air conditioners with dehumidification function can be selected when there is a lot of rain in summer. In addition, dehumidifiers are generally mobile, and as a special type of dehumidifier, the dehumidifier can effectively balance the humidity in the air during the dehumidification process. Unlike air conditioning dehumidification, the indoor air becomes dry, which is very harmful to the skin. Big impact. So, which dehumidifier or air conditioner has the better dehumidification effect? Now that we have the answer, people should choose according to the geographical environment and climate characteristics.