除湿机

　　空调在我们生活中的应用是非常广泛的，基本上是随处可见。但除湿机露面的机会就很小了，只是偶尔能听别人说过或者看到被使用。

空调能够制暖和制冷，这个不用多说。它是利用液化(由气体变为液态)时要排出热量和汽化(由液体变为气体)时要吸收热量的原理来工作的。压缩机将气态的制冷剂压缩为高温高压的气态制冷剂，然后送到冷凝器(室外机)散热后成为常温高压的液态制冷剂，所以室外机吹出来的是热风;制热的时候有一个叫四通阀的部件，使制冷剂在冷凝器与蒸发器的流动方向与制冷时相反，所以制热的时候室外吹的是冷风，室内机吹的是热风。另外，有些空调还有除湿和换气的功能。空调有两种除湿模式。

　　制冷模式:这是任何空调器都具有的模式，也是空调器比较基本的功能。空调器制冷的进程必定伴随着除湿，湿润空气通过空调器蒸发器后温度会大幅度降落，空气湿度处于一种过饱和状态，过剩水汽以冷凝水的形势析出，凝结于蒸发器的翅片上，也就是凝露，等到制冷模式到达一定的平衡状态，空气湿度也就降到了一定的水平。

　　立除湿模式:这类方式被业内人士称为恒温除湿，它的基本原理是将通过蒸发器被冷却了的空气再加热到原来的温度，然后再送入室内，这样室内环境在湿度降落的情况下保持了相对恒定。

　　除湿机的工作原理根据工作方式的不同而各有差异，但正因为它是针对除湿而专门设计的设备，不像空调在除湿时会因为负载变大而更加耗电，所以单单比较除湿的情况下，除湿机的效果更加良好。

　　综上所叙，需要经常除湿的情况下，使用除湿机更实惠;如果只是偶尔使用，有空调就够了。

dehumidifier

The application of air conditioning in our life is very extensive, basically can be seen everywhere. But dehumidifier appearance of the opportunity is very small, only occasionally can hear someone said or see being used.

Air conditioners can be heated and cooled, needless to say. It works on the principle that heat is expelled when a gas is liquefied (changes from a gas to a liquid) and absorbed when a liquid is vaporized (changes from a liquid to a gas). The compressor compresses the gaseous refrigerant into the gaseous refrigerant of high temperature and high pressure, and then sends it to the condenser (outdoor unit) to become the liquid refrigerant of normal temperature and high pressure after heat dissipation, so the outdoor unit blows out hot air. When heating, there is a part called the four-way valve, so that the flow direction of refrigerant in the condenser and evaporator is opposite to that of refrigeration, so when heating, the outdoor wind is cold, and the indoor machine is hot. In addition, some air conditioners have the function of dehumidification and ventilation. The air conditioner has two dehumidification modes.

Refrigeration mode: this is any air conditioner has the mode, is also the air conditioner more basic function. Air conditioner refrigeration process must be accompanied by dehumidification, moist air through air conditioner evaporator temperature significantly after landing, the humidity in a supersaturated state, the excess water vapor by separating out the situation of condensed water condensation on the finned evaporator, that is condensation, wait for refrigeration mode reaches a certain balance, air humidity has dropped to a certain level.

Vertical dehumidification mode: this kind of method is called constant temperature dehumidification by insiders. Its basic principle is to reheat the cooled air through the evaporator to the original temperature, and then send it into the room, so that the indoor environment remains relatively constant under the condition of humidity falling.

The working principle of dehumidifier varies according to the different working modes, but because it is specially designed for dehumidification, unlike air conditioning, it consumes more power because of the large load when dehumidification, so the effect of dehumidifier is better than that of dehumidifier alone.

To sum up, in the case of frequent dehumidification, the use of dehumidifier is more affordable; Air conditioning is enough for occasional use.