Use and classification of commercial central air conditioning system

单冷式：

Single cold type:

将室内热湿空气吸入，经过蒸发器将水蒸气冷凝，然后将干燥、凉爽的空气送入室内，起到降温、降湿的作用。

The indoor hot and humid air is inhaled, the steam is condensed through evaporator, and then the dry and cool air is sent into the room to cool down and dehumidification.

冷热式：

Cold and hot type:

既能降温、降湿，又可制热、取暖。制热方式可分为热泵式和电热式。热泵式空调取暖时，室外空气温度在5℃以上才能正常工作。

It can not only cool down, reduce humidity, but also make heat and heat. The heating mode can be divided into heat pump type and electric heating type. When the heat pump air conditioning heating, the outdoor air temperature above 5 degrees Celsius can work normally.

移动式：

Mobile:

它与窗式空调器的区别是采用水冷方式，冷凝水通过软管排出，可以在室内随意移动，不用安装。

The difference between it and the window type air conditioner is that it adopts water cooling method, condensate water is discharged through the hose, and it can move freely indoors without installing.

分体式：

Split style:

它由室内机箱和室外机箱组成，室外机箱组合了制冷系统中的压缩机、冷凝器和轴流风机等。

It consists of an indoor cabinet and an outdoor chassis, and the outdoor chassis combines a compressor, a condenser and an axial flow fan in the refrigeration system.

变频空调：

Inverter air conditioner:

是由电脑控制的变频器和变频压缩机组成的,它运用变频控制技术，使空调根据环境温度自动选择制冷、制热和除湿运转方式，使居室在短时间内迅速达到所需要的温度，并在低转速低能耗状态下以较小的温差波动，实现快速、节能和舒适的控温效果。

It is made up of a computer controlled inverter and frequency conversion compressor. It uses frequency conversion control technology to automatically select the refrigeration, heat and dehumidification operation mode according to the ambient temperature, so that the room can quickly reach the required temperature in a short time, and in the low speed and low energy consumption state with a small temperature difference, it can realize fast and fast. Energy saving and comfortable temperature control effect.